CheckMK doesn't send PagerDuty Notifications

Basic info (versions,verbose outputs etc..)

CMK version:1.6.0
OS version: centos rhel fedora Amazon Linux 2

Error message: -none-

Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins)

<<<check_mk>>>
Version: 1.6.0p11
AgentOS: linux
Hostname: ip-10-80-2-221.us-east-2.compute.internal
AgentDirectory: /etc/check_mk
DataDirectory: /var/lib/check_mk_agent
SpoolDirectory: /var/lib/check_mk_agent/spool
PluginsDirectory: /usr/lib/check_mk_agent/plugins
LocalDirectory: /usr/lib/check_mk_agent/local
                                                                                                           # CUT SOME DUE TO CHAR LIMIT MAX

<<<nfsmounts>>>
<<<cifsmounts>>>
<<<mounts>>>
/dev/nvme0n1p1 / xfs rw,noatime,attr2,inode64,noquota 0 0
<<<ps>>>
dummy section -- refer to section ps_lnx
<<<ps_lnx>>>
[header] CGROUP                                                                                                                                                USER                                                                                                                                                VSZ                                                                                                                                                RSS                                                                                                                   TIME     ELAPSED   PID COMMAND
-                                                                                                                                                root                                                                                                                                                43952                                                                                                                                                5776                                                                                                                 00:00:08    02:00:35     1 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35     2 [kthreadd]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35     4 [kworker/0:0H]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35     6 [mm_percpu_wq]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:02    02:00:35     7 [ksoftirqd/0]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:06    02:00:35     8 [rcu_sched]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35     9 [rcu_bh]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    10 [migration/0]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    11 [watchdog/0]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    12 [cpuhp/0]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    13 [cpuhp/1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    14 [watchdog/1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    15 [migration/1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:02    02:00:35    16 [ksoftirqd/1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    18 [kworker/1:0H]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    19 [kdevtmpfs]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35    20 [netns]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   129 [khungtaskd]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   179 [oom_reaper]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   180 [writeback]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   181 [kcompactd0]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   183 [ksmd]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   184 [khugepaged]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   185 [crypto]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   186 [kintegrityd]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   187 [kblockd]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   291 [md]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   298 [edac-poller]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       02:29   300 [kworker/u4:1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   303 [watchdogd]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   430 [kauditd]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:35   436 [kswapd0]
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                1055876                                                                                                                                                9120                                                                      00:00:00       01:59   517 /omd/sites/tfprod/bin/nagios -ud /omd/sites/tfprod/tmp/nagios/nagios.cfg
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:34   568 [kthrotld]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:34   612 [kstrp]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:34   639 [ipv6_addrconf]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       01:39   673 [kworker/0:2]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1235 [nvme-wq]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1345 [xfsalloc]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1346 [xfs_mru_cache]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1348 [xfs-buf/nvme0n1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1349 [xfs-data/nvme0n]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1350 [xfs-conv/nvme0n]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1351 [xfs-cil/nvme0n1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1352 [xfs-reclaim/nvm]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1353 [xfs-log/nvme0n1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1354 [xfs-eofblocks/n]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:02    02:00:33  1355 [xfsaild/nvme0n1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:33  1356 [kworker/0:1H]
1:name=systemd:/system.slice/systemd-journald.service                                                                                                                                                root                                                                                                                                                123036                                                                                                                                                59628                                                           00:00:00    02:00:32  1420 /usr/lib/systemd/systemd-journald
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:32  1430 [ena]
1:name=systemd:/system.slice/lvm2-lvmetad.service                                                                                                                                                root                                                                                                                                                116824                                                                                                                                                2076                                                                00:00:00    02:00:32  1436 /usr/sbin/lvmetad -f
1:name=systemd:/system.slice/systemd-udevd.service                                                                                                                                                root                                                                                                                                                45512                                                                                                                                                3660                                                                00:00:00    02:00:32  1439 /usr/lib/systemd/systemd-udevd
1:name=systemd:/user.slice/user-0.slice/session-c2.scope                                                                                                                                                root                                                                                                                                                120060                                                                                                                                                3100                                                         00:00:00       00:00  1528 /bin/bash /usr/bin/check_mk_agent --debug -vvn hostname
1:name=systemd:/user.slice/user-0.slice/session-c2.scope                                                                                                                                                root                                                                                                                                                54016                                                                                                                                                3628                                                          00:00:00       00:00  1551 ps ax -o cgroup:512,user:32,vsz,rss,cputime,etime,pid,command --columns 10000
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:32  1826 [kworker/1:1H]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:31  1900 [rpciod]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00    02:00:31  1901 [xprtiod]
1:name=systemd:/system.slice/auditd.service                                                                                                                                                root                                                                                                                                                64332                                                                                                                                                2364                                                                       00:00:00    02:00:31  1904 /sbin/auditd
1:name=systemd:/system.slice/libstoragemgmt.service                                                                                                                                                libstoragemgmt                                                                                                                                                12656                                                                                                                                                1864                                                     00:00:00    02:00:31  1929 /usr/bin/lsmd -d
1:name=systemd:/system.slice/rpcbind.service                                                                                                                                                rpc                                                                                                                                                73828                                                                                                                                                3580                                                                       00:00:00    02:00:31  1930 /sbin/rpcbind -w
1:name=systemd:/system.slice/dbus.service                                                                                                                                                dbus                                                                                                                                                60548                                                                                                                                                4484                                                                         00:00:01    02:00:31  1934 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
1:name=systemd:/system.slice/chronyd.service                                                                                                                                                chrony                                                                                                                                                122644                                                                                                                                                4028                                                                   00:00:00    02:00:31  1936 /usr/sbin/chronyd
1:name=systemd:/system.slice/rngd.service                                                                                                                                                root                                                                                                                                                13144                                                                                                                                                924                                                                          00:00:00    02:00:31  1941 /sbin/rngd -f
1:name=systemd:/system.slice/irqbalance.service                                                                                                                                                root                                                                                                                                                99916                                                                                                                                                1580                                                                   00:00:00    02:00:31  1943 /usr/sbin/irqbalance --foreground --hintpolicy=subset
1:name=systemd:/system.slice/systemd-logind.service                                                                                                                                                root                                                                                                                                                28520                                                                                                                                                3016                                                               00:00:00    02:00:31  1945 /usr/lib/systemd/systemd-logind
1:name=systemd:/system.slice/gssproxy.service                                                                                                                                                root                                                                                                                                                208356                                                                                                                                                3540                                                                    00:00:00    02:00:31  1949 /usr/sbin/gssproxy -D
1:name=systemd:/system.slice/network.service                                                                                                                                                root                                                                                                                                                105452                                                                                                                                                4272                                                                     00:00:00    02:00:29  2159 /sbin/dhclient -q -lf /var/lib/dhclient/dhclient--eth0.lease -pf /var/run/dhclient-eth0.pid -H ip-10-80-2-220 eth0
1:name=systemd:/system.slice/network.service                                                                                                                                                root                                                                                                                                                105452                                                                                                                                                3920                                                                     00:00:00    02:00:28  2258 /sbin/dhclient -6 -nw -lf /var/lib/dhclient/dhclient6--eth0.lease -pf /var/run/dhclient6-eth0.pid eth0 -H ip-10-80-2-220
1:name=systemd:/system.slice/httpd.service                                                                                                                                                root                                                                                                                                                394032                                                                                                                                                25076                                                                      00:00:00    02:00:28  2303 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/xinetd.service                                                                                                                                                root                                                                                                                                                27412                                                                                                                                                2596                                                                       00:00:00    02:00:28  2306 /usr/sbin/xinetd -stayalive -pidfile /var/run/xinetd.pid
1:name=systemd:/system.slice/pdagent.service                                                                                                                                                pdagent                                                                                                                                                373136                                                                                                                                                21212                                                                 00:00:18    02:00:28  2312 /usr/bin/python /usr/share/pdagent/bin/pdagentd.py -f
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                292344                                                                                                                                                5644                                                                     00:00:00    02:00:27  2352 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                632088                                                                                                                                                13336                                                                    00:00:01    02:00:27  2363 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/postfix.service                                                                                                                                                root                                                                                                                                                90416                                                                                                                                                4884                                                                      00:00:00    02:00:27  2444 /usr/libexec/postfix/master -w
1:name=systemd:/system.slice/postfix.service                                                                                                                                                postfix                                                                                                                                                90580                                                                                                                                                6788                                                                   00:00:00    02:00:27  2446 qmgr -l -t unix -u
1:name=systemd:/system.slice/amazon-ssm-agent.service                                                                                                                                                root                                                                                                                                                1024616                                                                                                                                                35104                                                          00:00:04    02:00:26  2497 /usr/bin/amazon-ssm-agent
1:name=systemd:/system.slice/rsyslog.service                                                                                                                                                root                                                                                                                                                741028                                                                                                                                                30824                                                                    00:00:00    02:00:26  2499 /usr/sbin/rsyslogd -n
1:name=systemd:/system.slice/sshd.service                                                                                                                                                root                                                                                                                                                112928                                                                                                                                                7212                                                                        00:00:00    02:00:26  2504 /usr/sbin/sshd -D
1:name=systemd:/system.slice/crond.service                                                                                                                                                root                                                                                                                                                135152                                                                                                                                                3380                                                                       00:00:00    02:00:26  2507 /usr/sbin/crond -n
1:name=systemd:/system.slice/atd.service                                                                                                                                                root                                                                                                                                                27920                                                                                                                                                2240                                                                          00:00:00    02:00:26  2509 /usr/sbin/atd -f
1:name=systemd:/system.slice/system-serial\x2dgetty.slice/serial-getty@ttyS0.service                                                                                                                                                root                                                                                                                                                120984                                                                                                                                                2248                             00:00:00    02:00:26  2528 /sbin/agetty --keep-baud 115200,38400,9600 ttyS0 vt220
1:name=systemd:/system.slice/system-getty.slice/getty@tty1.service                                                                                                                                                root                                                                                                                                                121336                                                                                                                                                1764                                               00:00:00    02:00:26  2529 /sbin/agetty --noclear tty1 linux
1:name=systemd:/system.slice/acpid.service                                                                                                                                                root                                                                                                                                                4308                                                                                                                                                104                                                                          00:00:00    02:00:25  2566 /usr/sbin/acpid
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                228548                                                                                                                                                28696                                                                      00:00:04    02:00:24  2581 python /omd/sites/tfprod/bin/mkeventd
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                710808                                                                                                                                                19252                                                                      00:00:21    02:00:24  2591 /omd/sites/tfprod/bin/rrdcached -t 4 -w 3600 -z 1800 -f 7200 -s tfprod -m 660 -l unix:/omd/sites/tfprod/tmp/run/rrdcached.sock -p /omd/sites/tfprod/tmp/rrdcached.pid -j /omd/sites/tfprod/var/rrdcached -o /omd/sites/tfprod/var/log/rrdcached.log
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                156072                                                                                                                                                1852                                                                       00:00:00    02:00:24  2610 /omd/sites/tfprod/bin/npcd -d -f /omd/sites/tfprod/etc/pnp4nagios/npcd.cfg
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                123328                                                                                                                                                6528                                                                       00:00:00    02:00:23  2674 /usr/sbin/httpd -f /omd/sites/tfprod/etc/apache/apache.conf
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                123304                                                                                                                                                3668                                                                       00:00:00    02:00:23  2678 /usr/sbin/httpd -f /omd/sites/tfprod/etc/apache/apache.conf
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                452616                                                                                                                                                174572                                                                     00:00:10    02:00:23  2680 /usr/sbin/httpd -f /omd/sites/tfprod/etc/apache/apache.conf
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                379120                                                                                                                                                5648                                                                       00:00:00    02:00:23  2683 stunnel /omd/sites/tfprod/etc/stunnel/server.conf
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                27412                                                                                                                                                2504                                                                        00:00:00    02:00:23  2691 /omd/sites/tfprod/var/tmp/xinetd -pidfile /omd/sites/tfprod/tmp/run/xinetd.pid -filelog /omd/sites/tfprod/var/log/xinetd.log -f /omd/sites/tfprod/etc/xinetd.conf
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                452464                                                                                                                                                174232                                                                     00:00:06    01:59:53  2984 /usr/sbin/httpd -f /omd/sites/tfprod/etc/apache/apache.conf
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                438016                                                                                                                                                159912                                                                     00:00:07    01:46:40  9395 /usr/sbin/httpd -f /omd/sites/tfprod/etc/apache/apache.conf
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                434580                                                                                                                                                158724                                                                     00:00:10    01:45:57  9870 /usr/sbin/httpd -f /omd/sites/tfprod/etc/apache/apache.conf
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                457224                                                                                                                                                179200                                                                     00:00:11    01:45:39 10075 /usr/sbin/httpd -f /omd/sites/tfprod/etc/apache/apache.conf
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       38:41 13639 [kworker/u4:2]
1:name=systemd:/system.slice/omd.service                                                                                                                                                tfprod                                                                                                                                                297204                                                                                                                                                23116                                                                      00:00:00    01:36:53 14822 /usr/bin/php-cgi -d session.save_handler=files -d session.save_path=/omd/sites/tfprod/tmp/php/session -d upload_tmp_dir=/omd/sites/tfprod/tmp/php/upload -d soap.wsdl_cache_dir=/omd/sites/tfprod/tmp/php/wsdl-cache -d safe_mode=Off -d mysql.default_socket=/omd/sites/tfprod/tmp/run/mysqld/mysqld.sock
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435412                                                                                                                                                13376                                                                    00:00:01    01:36:51 14903 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435412                                                                                                                                                13376                                                                    00:00:01    01:36:51 14910 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435412                                                                                                                                                13376                                                                    00:00:01    01:36:51 14912 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435412                                                                                                                                                13376                                                                    00:00:01    01:36:50 14999 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435412                                                                                                                                                13376                                                                    00:00:01    01:36:50 15007 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435412                                                                                                                                                13376                                                                    00:00:01    01:36:50 15013 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435412                                                                                                                                                13376                                                                    00:00:01    01:36:50 15019 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435412                                                                                                                                                13448                                                                    00:00:01    01:35:28 15809 /usr/sbin/httpd -DFOREGROUND
1:name=systemd:/system.slice/httpd.service                                                                                                                                                apache                                                                                                                                                435408                                                                                                                                                13324                                                                    00:00:01    01:35:28 15810 /usr/sbin/httpd -DFOREGROUND
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       28:41 18528 [kworker/0:1]
1:name=systemd:/system.slice/postfix.service                                                                                                                                                postfix                                                                                                                                                90504                                                                                                                                                6948                                                                   00:00:00       19:23 23530 pickup -l -t unix -u
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       17:38 24327 [kworker/1:0]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       16:42 24896 [kworker/1:1]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:01    01:16:26 26020 [kworker/u4:0]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       10:41 28253 [kworker/1:3]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       08:41 29319 [kworker/0:0]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       07:41 29827 [kworker/0:4]
-                                                                                                                                                root                                                                                                                                                0                                                                                                                                                0                                                                                                                        00:00:00       04:41 31536 [kworker/1:2]
1:name=systemd:/system.slice/amazon-ssm-agent.service                                                                                                                                                root                                                                                                                                                726592                                                                                                                                                27336                                                           00:00:00       02:37 32564 /usr/bin/ssm-session-worker jacksmith-k3dquxuzoytlgkyqvyryucl6uq i-073b45b9400d658aa
1:name=systemd:/system.slice/amazon-ssm-agent.service                                                                                                                                                delkind                                                                                                                                                124264                                                                                                                                                3508                                                         00:00:00       02:36 32577 sh
1:name=systemd:/system.slice/amazon-ssm-agent.service                                                                                                                                                root                                                                                                                                                216940                                                                                                                                                6332                                                            00:00:00       02:33 32595 sudo su -
1:name=systemd:/user.slice/user-0.slice/session-c2.scope                                                                                                                                                root                                                                                                                                                192608                                                                                                                                                4036                                                         00:00:00       02:33 32596 su -
1:name=systemd:/user.slice/user-0.slice/session-c2.scope                                                                                                                                                root                                                                                                                                                125056                                                                                                                                                4308                                                         00:00:00       02:33 32597 -bash
<<<mem>>>
MemTotal:        3990584 kB
MemFree:         1185736 kB
MemAvailable:    2520568 kB
Buffers:            2088 kB
Cached:          1327440 kB
SwapCached:            0 kB
Active:          1132984 kB
Inactive:        1113284 kB
Active(anon):     919492 kB
Inactive(anon):    14524 kB
Active(file):     213492 kB
Inactive(file):  1098760 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       6291452 kB
SwapFree:        6291452 kB
Dirty:             51152 kB
Writeback:             0 kB
AnonPages:        916752 kB
Mapped:           152052 kB
Shmem:             17880 kB
Slab:             345248 kB
SReclaimable:     310608 kB
SUnreclaim:        34640 kB
KernelStack:        3984 kB
PageTables:        19960 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     8286744 kB
Committed_AS:    2213472 kB
VmallocTotal:   34359738367 kB
VmallocUsed:           0 kB
VmallocChunk:          0 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:       67560 kB
DirectMap2M:     3028992 kB
DirectMap1G:     1048576 kB
<<<cpu>>>
0.51 0.35 0.45 1/249 1556 2
30895
<<<uptime>>>
7235.96 11575.68
<<<lnx_if>>>
[start_iplink]
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 06:d4:87:42:e0:e4 brd ff:ff:ff:ff:ff:ff
    inet 10.80.2.220/24 brd 10.80.2.255 scope global dynamic eth0
       valid_lft 2485sec preferred_lft 2485sec
    inet6 fe80::4d4:87ff:fe42:e0e4/64 scope link
       valid_lft forever preferred_lft forever
[end_iplink]
<<<lnx_if:sep(58)>>>
  eth0: 629108496  269823    0    0    0     0          0         0 25059959  252669    0    0    0     0       0          0
    lo: 33140748   37216    0    0    0     0          0         0 33140748   37216    0    0    0     0       0          0
[lo]
	Link detected: yes
	Address: 00:00:00:00:00:00

[eth0]
	Link detected: yes
	Address: 06:d4:87:42:e0:e4

<<<tcp_conn_stats>>>
01 3
0A 10
06 15
<<<diskstat>>>
1746722203
 259       0 nvme0n1 62316 11 1693526 40392 134686 34226 4281400 127556 0 30508 115128
[dmsetup_info]
No devices found
<<<kernel>>>
1746722203
nr_free_pages 296093
nr_zone_inactive_anon 3631
nr_zone_active_anon 229863
nr_zone_inactive_file 274701
nr_zone_active_file 53373
nr_zone_unevictable 0
nr_zone_write_pending 12793
nr_mlock 0
nr_page_table_pages 4995
nr_kernel_stack 4000
nr_bounce 0
nr_zspages 0
nr_free_cma 0
numa_hit 71978296
numa_miss 0
numa_foreign 0
numa_interleave 24796
numa_local 71978296
numa_other 0
nr_inactive_anon 3631
nr_active_anon 229863
nr_inactive_file 274701
nr_active_file 53373
nr_unevictable 0
nr_slab_reclaimable 77652
nr_slab_unreclaimable 8676
nr_isolated_anon 0
nr_isolated_file 0
workingset_refault 0
workingset_activate 0
workingset_nodereclaim 0
nr_anon_pages 229190
nr_mapped 38013
nr_file_pages 332387
nr_dirty 12793
nr_writeback 0
nr_writeback_temp 0
nr_shmem 4470
nr_shmem_hugepages 0
nr_shmem_pmdmapped 0
nr_anon_transparent_hugepages 0
nr_unstable 0
nr_vmscan_write 0
nr_vmscan_immediate_reclaim 0
nr_dirtied 402165
nr_written 358882
nr_dirty_threshold 118785
nr_dirty_background_threshold 59320
pgpgin 846763
pgpgout 2140700
pswpin 0
pswpout 0
pgalloc_dma 0
pgalloc_dma32 68286457
pgalloc_normal 3891853
pgalloc_movable 0
allocstall_dma 0
allocstall_dma32 0
allocstall_normal 0
allocstall_movable 0
pgskip_dma 0
pgskip_dma32 0
pgskip_normal 0
pgskip_movable 0
pgfree 72475058
pgactivate 115183
pgdeactivate 0
pglazyfree 612
pgfault 103753281
pgmajfault 34682
pglazyfreed 0
pgrefill 0
pgsteal_kswapd 0
pgsteal_direct 0
pgscan_kswapd 0
pgscan_direct 0
pgscan_direct_throttle 0
zone_reclaim_failed 0
pginodesteal 0
slabs_scanned 0
kswapd_inodesteal 0
kswapd_low_wmark_hit_quickly 0
kswapd_high_wmark_hit_quickly 0
pageoutrun 0
pgrotated 0
drop_pagecache 0
drop_slab 0
oom_kill 0
numa_pte_updates 0
numa_huge_pte_updates 0
numa_hint_faults 0
numa_hint_faults_local 0
numa_pages_migrated 0
pgmigrate_success 0
pgmigrate_fail 0
compact_migrate_scanned 0
compact_free_scanned 0
compact_isolated 0
compact_stall 0
compact_fail 0
compact_success 0
compact_daemon_wake 0
compact_daemon_migrate_scanned 0
compact_daemon_free_scanned 0
htlb_buddy_alloc_success 0
htlb_buddy_alloc_fail 0
unevictable_pgs_culled 0
unevictable_pgs_scanned 0
unevictable_pgs_rescued 0
unevictable_pgs_mlocked 0
unevictable_pgs_munlocked 0
unevictable_pgs_cleared 0
unevictable_pgs_stranded 0
thp_fault_alloc 0
thp_fault_fallback 0
thp_collapse_alloc 0
thp_collapse_alloc_failed 0
thp_file_alloc 0
thp_file_mapped 0
thp_split_page 0
thp_split_page_failed 0
thp_deferred_split_page 0
thp_split_pmd 0
thp_split_pud 0
thp_zero_page_alloc 0
thp_zero_page_alloc_failed 0
thp_swpout 0
thp_swpout_fallback 0
swap_ra 0
swap_ra_hit 0
cpu  224635 0 43908 1154462 2896 0 595 18786 0 0
cpu0 111248 0 21856 578529 1448 0 290 9270 0 0
cpu1 113386 0 22052 575933 1448 0 304 9516 0 0
intr 3755389 50 11 0 0 254 0 0 0 0 0 0 0 88 0 0 0 0 0 0 0 0 0 0 0 71469 73222 7245 230324 233135 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ctxt 5995352
btime 1746714967
processes 66317
procs_running 1
procs_blocked 0
softirq 5781137 0 1232220 1431 488457 0 0 1054 646386 0 3411589
<<<md>>>
Personalities :
unused devices: <none>
<<<vbox_guest>>>
<<<chrony:cached(1746722171,30)>>>
Reference ID    : A9FEA97B (169.254.169.123)
Stratum         : 4
Ref time (UTC)  : Thu May 08 16:35:58 2025
System time     : 0.000000597 seconds fast of NTP time
Last offset     : +0.000000177 seconds
RMS offset      : 0.000000734 seconds
Frequency       : 10.254 ppm slow
Residual freq   : +0.000 ppm
Skew            : 0.019 ppm
Root delay      : 0.000278320 seconds
Root dispersion : 0.000070091 seconds
Update interval : 16.3 seconds
Leap status     : Normal
<<<postfix_mailq>>>
[[[]]]
QUEUE_deferred 0 0
QUEUE_active 0 0
<<<postfix_mailq_status:sep(58)>>>
postfix/:the Postfix mail system is running:PID:2444
<<<labels:sep(0)>>>
{"cmk/check_mk_server": "yes"}
<<<omd_status:cached(1746722111,60)>>>
[tfprod]
mkeventd 0
rrdcached 0
npcd 0
nagios 0
apache 0
stunnel 0
xinetd 0
crontab 0
OVERALL 0
<<<mknotifyd:sep(0)>>>
1746722203
<<<omd_apache:sep(124)>>>
[tfprod]

<<<livestatus_status:sep(59)>>>
[tfprod]
accept_passive_host_checks;accept_passive_service_checks;average_latency_cmk;average_latency_generic;average_latency_real_time;cached_log_messages;check_external_commands;check_host_freshness;check_service_freshness;connections;connections_rate;core_pid;enable_event_handlers;enable_flap_detection;enable_notifications;execute_host_checks;execute_service_checks;external_command_buffer_max;external_command_buffer_slots;external_command_buffer_usage;external_commands;external_commands_rate;forks;forks_rate;has_event_handlers;helper_usage_cmk;helper_usage_generic;helper_usage_real_time;host_checks;host_checks_rate;interval_length;last_command_check;last_log_rotation;livechecks;livechecks_rate;livestatus_active_connections;livestatus_overflows;livestatus_overflows_rate;livestatus_queued_connections;livestatus_threads;livestatus_usage;livestatus_version;log_messages;log_messages_rate;mk_inventory_last;nagios_pid;neb_callbacks;neb_callbacks_rate;num_hosts;num_queued_alerts;num_queued_notifications;num_services;obsess_over_hosts;obsess_over_services;process_performance_data;program_start;program_version;requests;requests_rate;service_checks;service_checks_rate
1;1;0;0.0999218;0;0;1;1;1;4;0.0131807;517;1;1;1;1;1;0;32768;0;0;0;183;1.94337;0;0;0;0;88;0.836341;60;1746722203;0;0;0;1;0;0;0;20;0;1.6.0p11;900;0.32284;0;517;2490;12.4492;44;0;0;845;0;0;1;1746722083;3.5.1;5;0.0141203;834;7.84923
<<<livestatus_ssl_certs:sep(124)>>>
[tfprod]
/omd/sites/tfprod/etc/ssl/ca.pem|33091841259
/omd/sites/tfprod/etc/ssl/sites/tfprod.pem|33091841259
<<<mkeventd_status:sep(0)>>>
["tfprod"]
[["status_config_load_time", "status_num_open_events", "status_virtual_memory_size", "status_messages", "status_message_rate", "status_average_message_rate", "status_rule_tries", "status_rule_trie_rate", "status_average_rule_trie_rate", "status_rule_hits", "status_rule_hit_rate", "status_average_rule_hit_rate", "status_drops", "status_drop_rate", "status_average_drop_rate", "status_overflows", "status_overflow_rate", "status_average_overflow_rate", "status_events", "status_event_rate", "status_average_event_rate", "status_connects", "status_connect_rate", "status_average_connect_rate", "status_average_processing_time", "status_average_request_time", "status_average_sync_time", "status_replication_slavemode", "status_replication_last_sync", "status_replication_success", "status_event_limit_host", "status_event_limit_rule", "status_event_limit_overall", "status_event_limit_active_hosts", "status_event_limit_active_rules", "status_event_limit_active_overall"], [1746714979.162112, 0, 234033152, 0, 0.0, 0.0, 0, 0.0, 0.0, 0, 0.0, 0.0, 0, 0.0, 0.0, 0, 0.0, 0.0, 0, 0.0, 0.0, 129, 0.0, 0.016450142543335183, 0.0, 0.0005386570432657074, 0.0, "master", 0.0, false, 1000, 1000, 10000, [], [], false]]
<<<mkbackup>>>
[[[site:tfprod:nightly]]]
{
    "bytes_per_second": 1103765.0956048495,
    "finished": 1746678654.926181,
    "next_schedule": 1746763200.0,
    "output": "2025-05-08 04:00:02 --- Starting backup (Check_MK-ip+10+80+2+220.us+east+2.compute.internal-tfprod-nightly to BackupTarget) ---\n2025-05-08 04:30:52 Verifying backup consistency\n2025-05-08 04:30:54 Cleaning up previously completed backup\n2025-05-08 04:30:54 --- Backup completed (Duration: 0:30:52, Size: 891.19 MB, IO: 1.05 MB/s) ---\n",
    "pid": 23618,
    "size": 934477223,
    "started": 1746676802.072707,
    "state": "finished",
    "success": true
}
<<<job>>>
<<<local>>>

Issue

We have OMD CheckMK self-deployed on the cloud using multiple OMD. It’s our primary monitoring system. We have a few sites. We have notification rules that trigger PagerDuty alert.

Without any change, a few weeks ago the PagerDuty alert has stopped working only in one site. We have a global notification rule that is applied for all sites, and has always worked and hasn’t been modified. It’s the same PagerDuty Token that is applied no matter the OMD region. But some reason, when it comes from that one specific problematic region, even though the log looks clean and even says it got a response from PagerDuty like so:

2025-05-08 16:09:24 ----------------------------------------------------------------------
2025-05-08 16:09:24 Got raw notification (ecs-instance-REDACTED-i-REDACTED.us-east-2;Check_MK) context with 52 variables
2025-05-08 16:09:24 Global rule 'High urgency notifications for Prod envs'...
2025-05-08 16:09:24  -> matches!
.
.
.
2025-05-08 16:09:24 Executing 1 notifications:
2025-05-08 16:09:24   * notifying pagerduty via pagerduty-agent, parameters: c09ad8---REDACTED----322812311, bulk: no
2025-05-08 16:09:24      executing /omd/sites/redacted/local/share/check_mk/notifications/pagerduty-agent
2025-05-08 16:09:24      Output: Event processed. Incident Key: ('event_source=service;host_name=ecs-instance-docker--redacted--i-05bbf1e8f92533703.us-east-2;service_desc=Check_MK', [])

The response looks exactly the same in other regions, but only in that specific region it doesn’t actually create the alert in PagerDuty.

I’ve tried everything: restart the server, new notification group, create new PD service, I even tried sending an API request from that server with cURL (and it worked, but not from CheckMK).

I’d really appreciate help on the matter. Thanks ahead

Does thi s Forum allow pinging?

Hello Jack,

Thanks for your question!
This forum is a space where community members support each other voluntarily and in their own time. Bumping posts without adding any new information is discouraged, as it can make it harder to keep discussions constructive and helpful.
You can find more about how we try to keep things running smoothly in our Code of Conduct.
If you have any updates or further details to share, feel free to add them – otherwise, posts will be picked up as people have time and insights to offer.