Updated to 2.5.0p2 - Parsing of section qmail_stats/iis_app_pool_state failed

Troubleshooting
,
1

CMK version: 2.5.0p2 Pro
OS version: Ubuntu LTS 24.04

Error message:

Services: all up to date, Host labels: all up to date, Parsing of section qmail_stats failed (WARN), execution time 0.0 sec

Services: all up to date, Host labels: all up to date, Parsing of section iis_app_pool_state failed (WARN), execution time 0.0 sec

Hiya!

I’ve updated to cmk 2.5.0p2 yesterday and since then, 5 of our hosts have a weird issue. Their Check_MK Discovery Services keeps showing one of the errors stated above. The ones where qmail_stats is shown in the error are Linux Servers, the others Windows. I’ll post one of each debug outputs at the end here.

I’ve already done a “Remove all and find new” on those hosts which goes without a hitch. But these warnings will still stay. Anyone got an idea?

Output for a Linux host:

cmk --debug -vvn REDACTED
value store: loading from disk
Checkmk version 2.5.0p2
+ FETCHING DATA
  Source: SourceInfo(hostname='REDACTED', ipaddress='REDACTED', ident='agent', fetcher_type=<FetcherType.TCP: 8>, source_type=<SourceType.HOST: 1>)
[cpu_tracking] Start [7d263e1bd940]
Read from cache: AgentFileCache(base_path=/omd/sites/ahv_prod, relative_path_template=tmp/check_mk/cache/REDACTED, max_age=MaxAge(checking=0, discovery=90.0, inventory=90.0), simulation=False, use_only_cache=False, file_cache_mode=6)
Not using cache (Too old. Age is 6 sec, allowed is 0 sec)
Connecting via TCP to REDACTED:6556 (30.0s timeout)
Detected transport protocol: TransportProtocol.TLS
Reading data from agent via TLS socket
Reading data from agent
Detected transport protocol: TransportProtocol.PLAIN
Closing TCP connection to REDACTED:6556
Write data to cache file /omd/sites/ahv_prod/tmp/check_mk/cache/REDACTED
[cpu_tracking] Stop [7d263e1bd940 - Snapshot(process=posix.times_result(user=0.020000000000000018, system=0.0, children_user=0.0, children_system=0.0, elapsed=1.3800000008195639))]
  Source: SourceInfo(hostname='REDACTED', ipaddress='REDACTED', ident='piggyback', fetcher_type=<FetcherType.PIGGYBACK: 4>, source_type=<SourceType.HOST: 1>)
[cpu_tracking] Start [7d263e6f7ed0]
Read from cache: NoCache(base_path=/dev/null, relative_path_template=, max_age=MaxAge(checking=0.0, discovery=0.0, inventory=0.0), simulation=False, use_only_cache=False, file_cache_mode=1)
[cpu_tracking] Stop [7d263e6f7ed0 - Snapshot(process=posix.times_result(user=0.0, system=0.0, children_user=0.0, children_system=0.0, elapsed=0.0))]
[cpu_tracking] Start [7d263e6f7ed0]
+ PARSE FETCHER RESULTS
<<<check_mk>>> / Transition NOOPParser -> HostSectionParser
<<<cmk_agent_ctl_status:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<checkmk_agent_plugins_lnx:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<labels:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<df_v2>>> / Transition HostSectionParser -> HostSectionParser
<<<df_v2>>> / Transition HostSectionParser -> HostSectionParser
<<<systemd_units>>> / Transition HostSectionParser -> HostSectionParser
<<<nfsmounts_v2:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<cifsmounts>>> / Transition HostSectionParser -> HostSectionParser
<<<mounts>>> / Transition HostSectionParser -> HostSectionParser
<<<ps_lnx>>> / Transition HostSectionParser -> HostSectionParser
<<<mem>>> / Transition HostSectionParser -> HostSectionParser
<<<cpu>>> / Transition HostSectionParser -> HostSectionParser
<<<uptime>>> / Transition HostSectionParser -> HostSectionParser
<<<lnx_if>>> / Transition HostSectionParser -> HostSectionParser
<<<lnx_if:sep(58)>>> / Transition HostSectionParser -> HostSectionParser
<<<tcp_conn_stats>>> / Transition HostSectionParser -> HostSectionParser
<<<diskstat>>> / Transition HostSectionParser -> HostSectionParser
<<<kernel>>> / Transition HostSectionParser -> HostSectionParser
<<<md>>> / Transition HostSectionParser -> HostSectionParser
<<<vbox_guest>>> / Transition HostSectionParser -> HostSectionParser
<<<qmail_stats>>> / Transition HostSectionParser -> HostSectionParser
<<<job>>> / Transition HostSectionParser -> HostSectionParser
<<<chrony:cached(1778651080,120)>>> / Transition HostSectionParser -> HostSectionParser
<<<local:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<cmk_update_agent_status:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
Get piggybacked data
0 piggyback files for 'REDACTED'.
0 piggyback files for 'REDACTED'.
  HostKey(hostname='REDACTED', source_type=<SourceType.HOST: 1>)  -> Add sections: ['check_mk', 'checkmk_agent_plugins_lnx', 'chrony', 'cifsmounts', 'cmk_agent_ctl_status', 'cmk_update_agent_status', 'cpu', 'df_v2', 'diskstat', 'job', 'kernel', 'labels', 'lnx_if', 'local', 'md', 'mem', 'mounts', 'nfsmounts_v2', 'ps_lnx', 'qmail_stats', 'systemd_units', 'tcp_conn_stats', 'uptime', 'vbox_guest']
  HostKey(hostname='REDACTED', source_type=<SourceType.HOST: 1>)  -> Add sections: []
Received no piggyback data
CPU load             15 min load: 0.11, 15 min load per core: 0.03 (4 cores)
CPU utilization      Total CPU: 9.51%
Check_MK Agent       Version: 2.5.0p2, OS: linux, Last update: 2026-05-12 16:13:02, Agent plug-ins: 2, Local checks: 0
Disk IO SUMMARY      Read: 0.00 B/s, Write: 5.12 kB/s, Latency: 100 microseconds
Filesystem /         Used: 24.52% - 8.70 GiB of 35.5 GiB (warn/crit at 82.17%/86.62% used), trend per 1 day 0 hours: +73.2 MiB, trend per 1 day 0 hours: +0.20%, Time left until disk full: 1 year 9 days
Filesystem /boot     Used: 39.51% - 200 MiB of 507 MiB (warn/crit at 58.09%/68.56% used), trend per 1 day 0 hours: +0 B, trend per 1 day 0 hours: +0%
Interface ens192     [2], (up), MAC: 00:50:56:B2:8A:21, Speed: 10 GBit/s, In: 15.2 kB/s (<0.01%), Out: 19.7 kB/s (<0.01%)
Interface lo         [1], (up), MAC: 00:00:00:00:00:00, Speed: unknown, In: 27.5 kB/s, Out: 27.5 kB/s
Kernel Performance   Process Creations: 23.00/s, Context Switches: 2652.14/s, Major Page Faults: 0.00/s, Page Swap in: 0.00/s, Page Swap Out: 0.00/s
Memory               Total virtual memory: 34.53% - 2.62 GiB of 7.58 GiB, 9 additional details available
Mount options of /   Mount options exactly as expected
Mount options of /boot Mount options exactly as expected
NTP Time             Offset: 0.0344 ms, Stratum: 2, Time since last sync: 2 minutes 56 seconds
Number of threads    683, Usage: 2.35%
Systemd Service Summary Total: 133, Disabled: 13, Failed: 0
Systemd Socket Summary Total: 14, Disabled: 2, Failed: 0
TCP Connections      Established: 53
Uptime               Up since 2026-04-22 11:51:30, Uptime: 20 days 19 hours
+ EXECUTING INVENTORY PLUGINS
 inventory_proxmox_ve_node: skipped (no data)
 inventory_proxmox_ve_node: skipped (no data)
 inventory_proxmox_ve_vm: skipped (no data)
 inventory_proxmox_ve_vm: skipped (no data)
 redfish_data: skipped (no data)
 redfish_data: skipped (no data)
 redfish_firmware: skipped (no data)
 redfish_firmware: skipped (no data)
 netapp_ontap_disk: skipped (no data)
 netapp_ontap_disk: skipped (no data)
 netapp_ontap_info: skipped (no data)
 netapp_ontap_info: skipped (no data)
 esx_systeminfo: skipped (no data)
 esx_systeminfo: skipped (no data)
 inv_esx_vsphere_hostsystem: skipped (no data)
 inv_esx_vsphere_hostsystem: skipped (no data)
 kube_daemonset: skipped (no data)
 kube_daemonset: skipped (no data)
 kube_node: skipped (no data)
 kube_node: skipped (no data)
 kube_deployment: skipped (no data)
 kube_deployment: skipped (no data)
 kube_pod: skipped (no data)
 kube_pod: skipped (no data)
 kube_namespace: skipped (no data)
 kube_namespace: skipped (no data)
 kube_cronjob: skipped (no data)
 kube_cronjob: skipped (no data)
 kube_statefulset: skipped (no data)
 kube_statefulset: skipped (no data)
 kube_cluster: skipped (no data)
 kube_cluster: skipped (no data)
 inventory_checkmk: skipped (no data)
 inventory_checkmk: skipped (no data)
 audiocodes_modules: skipped (no data)
 audiocodes_modules: skipped (no data)
 audiocodes_sip_interfaces: skipped (no data)
 audiocodes_sip_interfaces: skipped (no data)
 audiocodes_system_information: skipped (no data)
 audiocodes_system_information: skipped (no data)
 aruba_wlc_aps: skipped (no data)
 aruba_wlc_aps: skipped (no data)
 inv_cdp_cache: skipped (no data)
 inv_cdp_cache: skipped (no data)
 inv_if_name: skipped (no data)
 inv_if_name: skipped (no data)
 inv_lldp_cache: skipped (no data)
 inv_lldp_cache: skipped (no data)
 ip_addresses: skipped (no data)
 ip_addresses: skipped (no data)
 oracle_performance: skipped (no data)
 oracle_performance: skipped (no data)
 oracle_tablespaces: skipped (no data)
 oracle_tablespaces: skipped (no data)
 oracle_recovery_area: skipped (no data)
 oracle_recovery_area: skipped (no data)
 oracle_instance: skipped (no data)
 oracle_instance: skipped (no data)
 oracle_dataguard_stats: skipped (no data)
 oracle_dataguard_stats: skipped (no data)
 apc_netshelterpdu_inventory: skipped (no data)
 apc_netshelterpdu_inventory: skipped (no data)
 inventory_podman: skipped (no data)
 inventory_podman: skipped (no data)
 inventory_podman_container: skipped (no data)
 inventory_podman_container: skipped (no data)
 win_wmi_updates: skipped (no data)
 win_wmi_updates: skipped (no data)
 winperf_if: skipped (no data)
 winperf_if: skipped (no data)
 win_os: skipped (no data)
 win_os: skipped (no data)
 win_wmi_software: skipped (no data)
 win_wmi_software: skipped (no data)
 win_disks: skipped (no data)
 win_disks: skipped (no data)
 win_reg_uninstall: skipped (no data)
 win_reg_uninstall: skipped (no data)
 win_networkadapter: skipped (no data)
 win_networkadapter: skipped (no data)
 win_ip_address: skipped (no data)
 win_ip_address: skipped (no data)
 win_computersystemproduct: skipped (no data)
 win_computersystemproduct: skipped (no data)
 win_computersystem: skipped (no data)
 win_computersystem: skipped (no data)
 win_bios: skipped (no data)
 win_bios: skipped (no data)
 win_system: skipped (no data)
 win_system: skipped (no data)
 win_ip_r: skipped (no data)
 win_ip_r: skipped (no data)
 win_cpuinfo: skipped (no data)
 win_cpuinfo: skipped (no data)
 win_exefiles: skipped (no data)
 win_exefiles: skipped (no data)
 win_video: skipped (no data)
 win_video: skipped (no data)
 check_mk: ok
 check_mk: skipped (no data)
 checkmk_agent_plugins: ok
 checkmk_agent_plugins: skipped (no data)
 fritz: skipped (no data)
 fritz: skipped (no data)
 azure_v2_sites: skipped (no data)
 azure_v2_sites: skipped (no data)
 azure_v2_virtualnetworkgateways: skipped (no data)
 azure_v2_virtualnetworkgateways: skipped (no data)
 azure_v2_loadbalancers: skipped (no data)
 azure_v2_loadbalancers: skipped (no data)
 azure_v2_databases: skipped (no data)
 azure_v2_databases: skipped (no data)
 azure_v2_subscription: skipped (no data)
 azure_v2_subscription: skipped (no data)
 azure_v2_tenant: skipped (no data)
 azure_v2_tenant: skipped (no data)
 azure_v2_storageaccounts: skipped (no data)
 azure_v2_storageaccounts: skipped (no data)
 azure_v2_postgresql: skipped (no data)
 azure_v2_postgresql: skipped (no data)
 azure_v2_azurefirewalls: skipped (no data)
 azure_v2_azurefirewalls: skipped (no data)
 azure_v2_trafficmanagerprofiles: skipped (no data)
 azure_v2_trafficmanagerprofiles: skipped (no data)
 azure_v2_virtualmachines: skipped (no data)
 azure_v2_virtualmachines: skipped (no data)
 azure_v2_mysql: skipped (no data)
 azure_v2_mysql: skipped (no data)
 azure_v2_resourcegroups: skipped (no data)
 azure_v2_resourcegroups: skipped (no data)
 suseconnect: skipped (no data)
 suseconnect: skipped (no data)
 mssql_instance: skipped (no data)
 mssql_instance: skipped (no data)
 inv_meraki_wireless_ethernet: skipped (no data)
 inv_meraki_wireless_ethernet: skipped (no data)
 cisco_meraki_org_organisations: skipped (no data)
 cisco_meraki_org_organisations: skipped (no data)
 inv_meraki_interfaces: skipped (no data)
 inv_meraki_interfaces: skipped (no data)
 inv_meraki_cdp_cache: skipped (no data)
 inv_meraki_cdp_cache: skipped (no data)
 inv_meraki_lldp_cache: skipped (no data)
 inv_meraki_lldp_cache: skipped (no data)
 cisco_meraki_org_device_uplinks_info: skipped (no data)
 cisco_meraki_org_device_uplinks_info: skipped (no data)
 cisco_meraki_org_device_info: skipped (no data)
 cisco_meraki_org_device_info: skipped (no data)
 cisco_meraki_power_supplies: skipped (no data)
 cisco_meraki_power_supplies: skipped (no data)
 cisco_meraki_org_networks: skipped (no data)
 cisco_meraki_org_networks: skipped (no data)
 cisco_meraki_org_licenses_overview: skipped (no data)
 cisco_meraki_org_licenses_overview: skipped (no data)
 robotmk: skipped (no data)
 robotmk: skipped (no data)
 solaris_pkginfo: skipped (no data)
 solaris_pkginfo: skipped (no data)
 inventory_esx_vsphere_clusters: skipped (no data)
 inventory_esx_vsphere_clusters: skipped (no data)
 solaris_prtdiag: skipped (no data)
 solaris_prtdiag: skipped (no data)
 snmp_info: skipped (no data)
 snmp_info: skipped (no data)
 hp_proliant_systeminfo: skipped (no data)
 hp_proliant_systeminfo: skipped (no data)
 fortigate_ha: skipped (no data)
 fortigate_ha: skipped (no data)
 fortiauthenticator_system: skipped (no data)
 fortiauthenticator_system: skipped (no data)
 citrix_controller: skipped (no data)
 citrix_controller: skipped (no data)
 solaris_addresses: skipped (no data)
 solaris_addresses: skipped (no data)
 citrix_state: skipped (no data)
 citrix_state: skipped (no data)
 snmp_extended_info: skipped (no data)
 snmp_extended_info: skipped (no data)
 perle_psmu: skipped (no data)
 perle_psmu: skipped (no data)
 snmp_quantum_storage_info: skipped (no data)
 snmp_quantum_storage_info: skipped (no data)
 ibm_mq_queues: skipped (no data)
 ibm_mq_queues: skipped (no data)
 couchbase_nodes_ports: skipped (no data)
 couchbase_nodes_ports: skipped (no data)
 lnx_distro: skipped (no data)
 lnx_distro: skipped (no data)
 inventory_docker_container_node_name: skipped (no data)
 inventory_docker_container_node_name: skipped (no data)
 infoblox_systeminfo: skipped (no data)
 infoblox_systeminfo: skipped (no data)
 solaris_cpus: skipped (no data)
 solaris_cpus: skipped (no data)
 aix_packages: skipped (no data)
 aix_packages: skipped (no data)
 aix_lparstat_inventory: skipped (no data)
 aix_lparstat_inventory: skipped (no data)
 oracle_systemparameter: skipped (no data)
 oracle_systemparameter: skipped (no data)
 mobileiron_inventory: skipped (no data)
 mobileiron_inventory: skipped (no data)
 docker_container_labels: skipped (no data)
 docker_container_labels: skipped (no data)
 lnx_sysctl: skipped (no data)
 lnx_sysctl: skipped (no data)
 aix_baselevel: skipped (no data)
 aix_baselevel: skipped (no data)
 juniper_info: skipped (no data)
 juniper_info: skipped (no data)
 perle_chassis: skipped (no data)
 perle_chassis: skipped (no data)
 dell_hw_info: skipped (no data)
 dell_hw_info: skipped (no data)
 inv_if: ok
 inv_if: skipped (no data)
 lnx_if: ok
 lnx_if: skipped (no data)
 solaris_uname: skipped (no data)
 solaris_uname: skipped (no data)
 fortimail_system: skipped (no data)
 fortimail_system: skipped (no data)
 ibm_mq_managers: skipped (no data)
 ibm_mq_managers: skipped (no data)
 hp_proliant_mem: skipped (no data)
 hp_proliant_mem: skipped (no data)
 inventory_esx_vsphere_virtual_machines: skipped (no data)
 inventory_esx_vsphere_virtual_machines: skipped (no data)
 hp_proliant_da_phydrv: skipped (no data)
 hp_proliant_da_phydrv: skipped (no data)
 mem_used: skipped (no data)
 mem_used: skipped (no data)
 checkpoint_vpn_tunnels: skipped (no data)
 checkpoint_vpn_tunnels: skipped (no data)
 lnx_cpuinfo: skipped (no data)
 lnx_cpuinfo: skipped (no data)
 allnet_ip_sensoric: skipped (no data)
 allnet_ip_sensoric: skipped (no data)
 fortisandbox_software: skipped (no data)
 fortisandbox_software: skipped (no data)
 ibm_mq_channels: skipped (no data)
 ibm_mq_channels: skipped (no data)
 lparstat_aix: skipped (no data)
 lparstat_aix: skipped (no data)
 lnx_ip_r: skipped (no data)
 lnx_ip_r: skipped (no data)
 inv_cisco_vlans: skipped (no data)
 inv_cisco_vlans: skipped (no data)
 lnx_video: skipped (no data)
 lnx_video: skipped (no data)
 ipmi_firmware: skipped (no data)
 ipmi_firmware: skipped (no data)
 perle_chassis_slots: skipped (no data)
 perle_chassis_slots: skipped (no data)
 mem: ok
 mem: skipped (no data)
 dmidecode: skipped (no data)
 dmidecode: skipped (no data)
 fireeye_sys_status: skipped (no data)
 fireeye_sys_status: skipped (no data)
 fortisandbox_system: skipped (no data)
 fortisandbox_system: skipped (no data)
 fortinet_firewall_network_interfaces: skipped (no data)
 fortinet_firewall_network_interfaces: skipped (no data)
 prtconf: skipped (no data)
 prtconf: skipped (no data)
 docker_node_info: skipped (no data)
 docker_node_info: skipped (no data)
 lnx_uname: skipped (no data)
 lnx_uname: skipped (no data)
 docker_container_network: skipped (no data)
 docker_container_network: skipped (no data)
 docker_node_images: skipped (no data)
 docker_node_images: skipped (no data)
 primekey: skipped (no data)
 primekey: skipped (no data)
 aix_service_packs: skipped (no data)
 aix_service_packs: skipped (no data)
 mssql_clusters: skipped (no data)
 mssql_clusters: skipped (no data)
 infoblox_osinfo: skipped (no data)
 infoblox_osinfo: skipped (no data)
 docker_node_network: skipped (no data)
 docker_node_network: skipped (no data)
 enviromux_micro_information: skipped (no data)
 enviromux_micro_information: skipped (no data)
 lnx_block_devices: skipped (no data)
 lnx_block_devices: skipped (no data)
 solaris_routes: skipped (no data)
 solaris_routes: skipped (no data)
 azure_load_balancer: skipped (no data)
 azure_load_balancer: skipped (no data)
 lnx_packages: skipped (no data)
 lnx_packages: skipped (no data)
 kyocera_printer: skipped (no data)
 kyocera_printer: skipped (no data)
Trying to acquire lock on /omd/sites/ahv_prod/tmp/check_mk/status_data/REDACTED.json
Got lock on /omd/sites/ahv_prod/tmp/check_mk/status_data/REDACTED.json
Releasing lock on /omd/sites/ahv_prod/tmp/check_mk/status_data/REDACTED.json
Released lock on /omd/sites/ahv_prod/tmp/check_mk/status_data/REDACTED.json
0 piggyback files for 'REDACTED'.
0 piggyback files for 'REDACTED'.
[cpu_tracking] Stop [7d263e6f7ed0 - Snapshot(process=posix.times_result(user=0.03000000000000025, system=0.0, children_user=0.0, children_system=0.0, elapsed=0.03999999910593033))]
[agent] Success, [piggyback] Success (but no data found for this host), execution time 1.4 sec | execution_time=1.420 user_time=0.050 system_time=0.000 children_user_time=0.000 children_system_time=0.000 cmk_time_agent=1.360

Output for a Windows host:

cmk --debug -vvn REDACTED
value store: loading from disk
Checkmk version 2.5.0p2
+ FETCHING DATA
  Source: SourceInfo(hostname='REDACTED', ipaddress='REDACTED', ident='agent', fetcher_type=<FetcherType.TCP: 8>, source_type=<SourceType.HOST: 1>)
[cpu_tracking] Start [72d27c4b9940]
Read from cache: AgentFileCache(base_path=/omd/sites/ahv_prod, relative_path_template=tmp/check_mk/cache/REDACTED, max_age=MaxAge(checking=0, discovery=90.0, inventory=90.0), simulation=False, use_only_cache=False, file_cache_mode=6)
Not using cache (Too old. Age is 8 sec, allowed is 0 sec)
Connecting via TCP to REDACTED:6556 (30.0s timeout)
Detected transport protocol: TransportProtocol.TLS
Reading data from agent via TLS socket
Reading data from agent
Detected transport protocol: TransportProtocol.PLAIN
Closing TCP connection to REDACTED:6556
Write data to cache file /omd/sites/ahv_prod/tmp/check_mk/cache/REDACTED
[cpu_tracking] Stop [72d27c4b9940 - Snapshot(process=posix.times_result(user=0.009999999999999787, system=0.009999999999999953, children_user=0.0, children_system=0.0, elapsed=2.590000000782311))]
  Source: SourceInfo(hostname='REDACTED', ipaddress='REDACTED', ident='piggyback', fetcher_type=<FetcherType.PIGGYBACK: 4>, source_type=<SourceType.HOST: 1>)
[cpu_tracking] Start [72d27c9f3ed0]
Read from cache: NoCache(base_path=/dev/null, relative_path_template=, max_age=MaxAge(checking=0.0, discovery=0.0, inventory=0.0), simulation=False, use_only_cache=False, file_cache_mode=1)
[cpu_tracking] Stop [72d27c9f3ed0 - Snapshot(process=posix.times_result(user=0.010000000000000231, system=0.0, children_user=0.0, children_system=0.0, elapsed=0.0))]
[cpu_tracking] Start [72d27c9f3ed0]
+ PARSE FETCHER RESULTS
<<<check_mk>>> / Transition NOOPParser -> HostSectionParser
<<<cmk_agent_ctl_status:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<wmi_cpuload:sep(124)>>> / Transition HostSectionParser -> HostSectionParser
<<<uptime>>> / Transition HostSectionParser -> HostSectionParser
<<<mem>>> / Transition HostSectionParser -> HostSectionParser
<<<fileinfo:sep(124)>>> / Transition HostSectionParser -> HostSectionParser
<<<df:sep(9)>>> / Transition HostSectionParser -> HostSectionParser
<<<winperf_phydisk>>> / Transition HostSectionParser -> HostSectionParser
<<<winperf_if>>> / Transition HostSectionParser -> HostSectionParser
<<<winperf_processor>>> / Transition HostSectionParser -> HostSectionParser
<<<checkmk_agent_plugins_win:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<services>>> / Transition HostSectionParser -> HostSectionParser
<<<dotnet_clrmemory:sep(124)>>> / Transition HostSectionParser -> HostSectionParser
<<<ps:sep(9)>>> / Transition HostSectionParser -> HostSectionParser
<<<w32time_peers>>> / Transition HostSectionParser -> HostSectionParser
<<<w32time_status>>> / Transition HostSectionParser -> HostSectionParser
Transition HostSectionParser -> NOOPParser
<<<cmk_update_agent_status:sep(0)>>> / Transition NOOPParser -> HostSectionParser
<<<iis_app_pool_state:sep(124)>>> / Transition HostSectionParser -> HostSectionParser
<<<win_license>>> / Transition HostSectionParser -> HostSectionParser
<<<windows_lastupdateinstalldate_kpc:cached(1778648754,10800):encoding(cp437):sep(9)>>> / Transition HostSectionParser -> HostSectionParser
<<<windows_updates_kpc:cached(1778648754,10800):encoding(cp437):sep(9)>>> / Transition HostSectionParser -> HostSectionParser
Transition HostSectionParser -> NOOPParser
<<<systemtime>>> / Transition NOOPParser -> HostSectionParser
Using persisted section 'win_cpuinfo'
Using persisted section 'win_os'
Using persisted section 'win_bios'
Using persisted section 'win_system'
Using persisted section 'win_computersystem'
Using persisted section 'win_computersystemproduct'
Using persisted section 'win_disks'
Using persisted section 'win_video'
Using persisted section 'win_networkadapter'
Using persisted section 'win_ip_r'
Using persisted section 'win_wmi_software'
Using persisted section 'win_wmi_updates'
Using persisted section 'win_reg_uninstall'
Using persisted section 'win_exefiles'
Get piggybacked data
1 piggyback files for 'REDACTED'.
Read piggyback file '/omd/sites/ahv_prod/tmp/check_mk/piggyback/REDACTED/REDACTED'
0 piggyback files for 'REDACTED'.
<<<piggyback_source_summary:sep(0)>>> / Transition NOOPParser -> HostSectionParser
<<<labels:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<esx_vsphere_vm:cached(1778651398,90)>>> / Transition HostSectionParser -> HostSectionParser
  HostKey(hostname='REDACTED', source_type=<SourceType.HOST: 1>)  -> Add sections: ['check_mk', 'checkmk_agent_plugins_win', 'cmk_agent_ctl_status', 'cmk_update_agent_status', 'df', 'dotnet_clrmemory', 'fileinfo', 'iis_app_pool_state', 'mem', 'ps', 'services', 'systemtime', 'uptime', 'w32time_peers', 'w32time_status', 'win_bios', 'win_computersystem', 'win_computersystemproduct', 'win_cpuinfo', 'win_disks', 'win_exefiles', 'win_ip_r', 'win_license', 'win_networkadapter', 'win_os', 'win_reg_uninstall', 'win_system', 'win_video', 'win_wmi_software', 'win_wmi_updates', 'windows_lastupdateinstalldate_kpc', 'windows_updates_kpc', 'winperf_if', 'winperf_phydisk', 'winperf_processor', 'wmi_cpuload']
  HostKey(hostname='REDACTED', source_type=<SourceType.HOST: 1>)  -> Add sections: ['esx_vsphere_vm', 'labels', 'piggyback_source_summary']
Received no piggyback data
CPU utilization      Total CPU (120 min average): 7.37%
Check_MK Agent       Version: 2.5.0p2, OS: windows, Last update: 2026-05-12 16:07:32, Agent plug-ins: 6, Local checks: 0
Disk IO SUMMARY      Read: 2.78 kB/s, Write: 519 kB/s, Latency: 427 microseconds
ESX CPU              demand is 1.185 Ghz, 4 virtual CPUs
ESX Datastores       Stored on VxRail-Virtual-SAN-Datastore (112 TiB/76.6% free)
ESX Guest Tools      VMware Tools are installed and the version is current
ESX Heartbeat        Heartbeat status is green
ESX Hostsystem       Running on REDACTED
ESX Memory           Host: 16.1 GiB, Guest: 2.24 GiB, Ballooned: 0 B, Private: 16.0 GiB, Shared: 4.00 MiB
ESX Mounted Devices  HA functionality guaranteed
ESX Name             REDACTED
ESX Snapshots        Count: 2, Powered on: None, Latest: REDACTED/pre 23.253.3.31801 2026-03-01 09:36:01, Oldest: REDACTED/pre update (08.11.25) 2025-11-08 13:17:54
Filesystem C:/       Used: 51.99% - 51.7 GiB of 99.4 GiB (warn/crit at 85.49%/89.12% used), trend per 1 day 0 hours: +23.5 MiB, trend per 1 day 0 hours: +0.02%, Time left until disk full: 5 years 256 days
Interface Ethernet-Adapter für vmxnet3 [1], (up), MAC: 00:50:56:B2:78:1A, Speed: 10 GBit/s, In: 1.06 kB/s (<0.01%), Out: 1.52 kB/s (<0.01%)
Memory               RAM: 48.98% - 7.84 GiB of 16.0 GiB, Virtual memory: 42.47% - 7.80 GiB of 18.4 GiB
Processor Queue      15 min load: 0.00, 15 min load per core: 0.00 (4 logical cores)
Service Summary      Autostart services: 71, Stopped services: 3
System Time          Offset: -162 milliseconds
Uptime               Up since 2026-03-22 19:19:48, Uptime: 51 days 11 hours
Windows License      Software is Licensed, Time until license expires: 175 days 1 hour
Windows Update History Last installation of Windows Updates: 2026-03-22 06:17:53 (51 days ago) / (warn: 45 / crit: 60)
Windows Updates      No updates available, no pending reboot
Windows time service Offset: 100 nanoseconds, Last successful sync: 16 minutes 9 seconds ago, Source: time.windows.com, Stratum: 5
Windows time service peers Found 1 peer, Failed: 0
+ EXECUTING INVENTORY PLUGINS
 inventory_proxmox_ve_node: skipped (no data)
 inventory_proxmox_ve_node: skipped (no data)
 inventory_proxmox_ve_vm: skipped (no data)
 inventory_proxmox_ve_vm: skipped (no data)
 redfish_data: skipped (no data)
 redfish_data: skipped (no data)
 redfish_firmware: skipped (no data)
 redfish_firmware: skipped (no data)
 netapp_ontap_disk: skipped (no data)
 netapp_ontap_disk: skipped (no data)
 netapp_ontap_info: skipped (no data)
 netapp_ontap_info: skipped (no data)
 esx_systeminfo: skipped (no data)
 esx_systeminfo: skipped (no data)
 inv_esx_vsphere_hostsystem: skipped (no data)
 inv_esx_vsphere_hostsystem: skipped (no data)
 kube_daemonset: skipped (no data)
 kube_daemonset: skipped (no data)
 kube_node: skipped (no data)
 kube_node: skipped (no data)
 kube_deployment: skipped (no data)
 kube_deployment: skipped (no data)
 kube_pod: skipped (no data)
 kube_pod: skipped (no data)
 kube_namespace: skipped (no data)
 kube_namespace: skipped (no data)
 kube_cronjob: skipped (no data)
 kube_cronjob: skipped (no data)
 kube_statefulset: skipped (no data)
 kube_statefulset: skipped (no data)
 kube_cluster: skipped (no data)
 kube_cluster: skipped (no data)
 inventory_checkmk: skipped (no data)
 inventory_checkmk: skipped (no data)
 audiocodes_modules: skipped (no data)
 audiocodes_modules: skipped (no data)
 audiocodes_sip_interfaces: skipped (no data)
 audiocodes_sip_interfaces: skipped (no data)
 audiocodes_system_information: skipped (no data)
 audiocodes_system_information: skipped (no data)
 aruba_wlc_aps: skipped (no data)
 aruba_wlc_aps: skipped (no data)
 inv_cdp_cache: skipped (no data)
 inv_cdp_cache: skipped (no data)
 inv_if_name: skipped (no data)
 inv_if_name: skipped (no data)
 inv_lldp_cache: skipped (no data)
 inv_lldp_cache: skipped (no data)
 ip_addresses: skipped (no data)
 ip_addresses: skipped (no data)
 oracle_performance: skipped (no data)
 oracle_performance: skipped (no data)
 oracle_tablespaces: skipped (no data)
 oracle_tablespaces: skipped (no data)
 oracle_recovery_area: skipped (no data)
 oracle_recovery_area: skipped (no data)
 oracle_instance: skipped (no data)
 oracle_instance: skipped (no data)
 oracle_dataguard_stats: skipped (no data)
 oracle_dataguard_stats: skipped (no data)
 apc_netshelterpdu_inventory: skipped (no data)
 apc_netshelterpdu_inventory: skipped (no data)
 inventory_podman: skipped (no data)
 inventory_podman: skipped (no data)
 inventory_podman_container: skipped (no data)
 inventory_podman_container: skipped (no data)
 win_wmi_updates: ok
 win_wmi_updates: skipped (no data)
 winperf_if: ok
 winperf_if: skipped (no data)
 win_os: ok
 win_os: skipped (no data)
 win_wmi_software: ok
 win_wmi_software: skipped (no data)
 win_disks: ok
 win_disks: skipped (no data)
 win_reg_uninstall: ok
 win_reg_uninstall: skipped (no data)
 win_networkadapter: ok
 win_networkadapter: skipped (no data)
 win_ip_address: ok
 win_ip_address: skipped (no data)
 win_computersystemproduct: ok
 win_computersystemproduct: skipped (no data)
 win_computersystem: ok
 win_computersystem: skipped (no data)
 win_bios: ok
 win_bios: skipped (no data)
 win_system: ok
 win_system: skipped (no data)
 win_ip_r: ok
 win_ip_r: skipped (no data)
 win_cpuinfo: ok
 win_cpuinfo: skipped (no data)
 win_exefiles: ok
 win_exefiles: skipped (no data)
 win_video: ok
 win_video: skipped (no data)
 check_mk: ok
 check_mk: skipped (no data)
 checkmk_agent_plugins: ok
 checkmk_agent_plugins: skipped (no data)
 fritz: skipped (no data)
 fritz: skipped (no data)
 azure_v2_sites: skipped (no data)
 azure_v2_sites: skipped (no data)
 azure_v2_virtualnetworkgateways: skipped (no data)
 azure_v2_virtualnetworkgateways: skipped (no data)
 azure_v2_loadbalancers: skipped (no data)
 azure_v2_loadbalancers: skipped (no data)
 azure_v2_databases: skipped (no data)
 azure_v2_databases: skipped (no data)
 azure_v2_subscription: skipped (no data)
 azure_v2_subscription: skipped (no data)
 azure_v2_tenant: skipped (no data)
 azure_v2_tenant: skipped (no data)
 azure_v2_storageaccounts: skipped (no data)
 azure_v2_storageaccounts: skipped (no data)
 azure_v2_postgresql: skipped (no data)
 azure_v2_postgresql: skipped (no data)
 azure_v2_azurefirewalls: skipped (no data)
 azure_v2_azurefirewalls: skipped (no data)
 azure_v2_trafficmanagerprofiles: skipped (no data)
 azure_v2_trafficmanagerprofiles: skipped (no data)
 azure_v2_virtualmachines: skipped (no data)
 azure_v2_virtualmachines: skipped (no data)
 azure_v2_mysql: skipped (no data)
 azure_v2_mysql: skipped (no data)
 azure_v2_resourcegroups: skipped (no data)
 azure_v2_resourcegroups: skipped (no data)
 suseconnect: skipped (no data)
 suseconnect: skipped (no data)
 mssql_instance: skipped (no data)
 mssql_instance: skipped (no data)
 inv_meraki_wireless_ethernet: skipped (no data)
 inv_meraki_wireless_ethernet: skipped (no data)
 cisco_meraki_org_organisations: skipped (no data)
 cisco_meraki_org_organisations: skipped (no data)
 inv_meraki_interfaces: skipped (no data)
 inv_meraki_interfaces: skipped (no data)
 inv_meraki_cdp_cache: skipped (no data)
 inv_meraki_cdp_cache: skipped (no data)
 inv_meraki_lldp_cache: skipped (no data)
 inv_meraki_lldp_cache: skipped (no data)
 cisco_meraki_org_device_uplinks_info: skipped (no data)
 cisco_meraki_org_device_uplinks_info: skipped (no data)
 cisco_meraki_org_device_info: skipped (no data)
 cisco_meraki_org_device_info: skipped (no data)
 cisco_meraki_power_supplies: skipped (no data)
 cisco_meraki_power_supplies: skipped (no data)
 cisco_meraki_org_networks: skipped (no data)
 cisco_meraki_org_networks: skipped (no data)
 cisco_meraki_org_licenses_overview: skipped (no data)
 cisco_meraki_org_licenses_overview: skipped (no data)
 robotmk: skipped (no data)
 robotmk: skipped (no data)
 solaris_pkginfo: skipped (no data)
 solaris_pkginfo: skipped (no data)
 inventory_esx_vsphere_clusters: skipped (no data)
 inventory_esx_vsphere_clusters: skipped (no data)
 solaris_prtdiag: skipped (no data)
 solaris_prtdiag: skipped (no data)
 snmp_info: skipped (no data)
 snmp_info: skipped (no data)
 hp_proliant_systeminfo: skipped (no data)
 hp_proliant_systeminfo: skipped (no data)
 fortigate_ha: skipped (no data)
 fortigate_ha: skipped (no data)
 fortiauthenticator_system: skipped (no data)
 fortiauthenticator_system: skipped (no data)
 citrix_controller: skipped (no data)
 citrix_controller: skipped (no data)
 solaris_addresses: skipped (no data)
 solaris_addresses: skipped (no data)
 citrix_state: skipped (no data)
 citrix_state: skipped (no data)
 snmp_extended_info: skipped (no data)
 snmp_extended_info: skipped (no data)
 perle_psmu: skipped (no data)
 perle_psmu: skipped (no data)
 snmp_quantum_storage_info: skipped (no data)
 snmp_quantum_storage_info: skipped (no data)
 ibm_mq_queues: skipped (no data)
 ibm_mq_queues: skipped (no data)
 couchbase_nodes_ports: skipped (no data)
 couchbase_nodes_ports: skipped (no data)
 lnx_distro: skipped (no data)
 lnx_distro: skipped (no data)
 inventory_docker_container_node_name: skipped (no data)
 inventory_docker_container_node_name: skipped (no data)
 infoblox_systeminfo: skipped (no data)
 infoblox_systeminfo: skipped (no data)
 solaris_cpus: skipped (no data)
 solaris_cpus: skipped (no data)
 aix_packages: skipped (no data)
 aix_packages: skipped (no data)
 aix_lparstat_inventory: skipped (no data)
 aix_lparstat_inventory: skipped (no data)
 oracle_systemparameter: skipped (no data)
 oracle_systemparameter: skipped (no data)
 mobileiron_inventory: skipped (no data)
 mobileiron_inventory: skipped (no data)
 docker_container_labels: skipped (no data)
 docker_container_labels: skipped (no data)
 lnx_sysctl: skipped (no data)
 lnx_sysctl: skipped (no data)
 aix_baselevel: skipped (no data)
 aix_baselevel: skipped (no data)
 juniper_info: skipped (no data)
 juniper_info: skipped (no data)
 perle_chassis: skipped (no data)
 perle_chassis: skipped (no data)
 dell_hw_info: skipped (no data)
 dell_hw_info: skipped (no data)
 inv_if: ok
 inv_if: skipped (no data)
 lnx_if: skipped (no data)
 lnx_if: skipped (no data)
 solaris_uname: skipped (no data)
 solaris_uname: skipped (no data)
 fortimail_system: skipped (no data)
 fortimail_system: skipped (no data)
 ibm_mq_managers: skipped (no data)
 ibm_mq_managers: skipped (no data)
 hp_proliant_mem: skipped (no data)
 hp_proliant_mem: skipped (no data)
 inventory_esx_vsphere_virtual_machines: skipped (no data)
 inventory_esx_vsphere_virtual_machines: skipped (no data)
 hp_proliant_da_phydrv: skipped (no data)
 hp_proliant_da_phydrv: skipped (no data)
 mem_used: skipped (no data)
 mem_used: skipped (no data)
 checkpoint_vpn_tunnels: skipped (no data)
 checkpoint_vpn_tunnels: skipped (no data)
 lnx_cpuinfo: skipped (no data)
 lnx_cpuinfo: skipped (no data)
 allnet_ip_sensoric: skipped (no data)
 allnet_ip_sensoric: skipped (no data)
 fortisandbox_software: skipped (no data)
 fortisandbox_software: skipped (no data)
 ibm_mq_channels: skipped (no data)
 ibm_mq_channels: skipped (no data)
 lparstat_aix: skipped (no data)
 lparstat_aix: skipped (no data)
 lnx_ip_r: skipped (no data)
 lnx_ip_r: skipped (no data)
 inv_cisco_vlans: skipped (no data)
 inv_cisco_vlans: skipped (no data)
 lnx_video: skipped (no data)
 lnx_video: skipped (no data)
 ipmi_firmware: skipped (no data)
 ipmi_firmware: skipped (no data)
 perle_chassis_slots: skipped (no data)
 perle_chassis_slots: skipped (no data)
 mem: ok
 mem: skipped (no data)
 dmidecode: skipped (no data)
 dmidecode: skipped (no data)
 fireeye_sys_status: skipped (no data)
 fireeye_sys_status: skipped (no data)
 fortisandbox_system: skipped (no data)
 fortisandbox_system: skipped (no data)
 fortinet_firewall_network_interfaces: skipped (no data)
 fortinet_firewall_network_interfaces: skipped (no data)
 prtconf: skipped (no data)
 prtconf: skipped (no data)
 docker_node_info: skipped (no data)
 docker_node_info: skipped (no data)
 lnx_uname: skipped (no data)
 lnx_uname: skipped (no data)
 docker_container_network: skipped (no data)
 docker_container_network: skipped (no data)
 docker_node_images: skipped (no data)
 docker_node_images: skipped (no data)
 primekey: skipped (no data)
 primekey: skipped (no data)
 aix_service_packs: skipped (no data)
 aix_service_packs: skipped (no data)
 mssql_clusters: skipped (no data)
 mssql_clusters: skipped (no data)
 infoblox_osinfo: skipped (no data)
 infoblox_osinfo: skipped (no data)
 docker_node_network: skipped (no data)
 docker_node_network: skipped (no data)
 enviromux_micro_information: skipped (no data)
 enviromux_micro_information: skipped (no data)
 lnx_block_devices: skipped (no data)
 lnx_block_devices: skipped (no data)
 solaris_routes: skipped (no data)
 solaris_routes: skipped (no data)
 azure_load_balancer: skipped (no data)
 azure_load_balancer: skipped (no data)
 lnx_packages: skipped (no data)
 lnx_packages: skipped (no data)
 kyocera_printer: skipped (no data)
 kyocera_printer: skipped (no data)
1 piggyback files for 'REDACTED'.
Read piggyback file '/omd/sites/ahv_prod/tmp/check_mk/piggyback/REDACTED/REDACTED'
[cpu_tracking] Stop [72d27c9f3ed0 - Snapshot(process=posix.times_result(user=0.029999999999999805, system=0.0, children_user=0.0, children_system=0.0, elapsed=0.03999999910593033))]
[agent] Success, [piggyback] Successfully processed from source 'SVVCS', execution time 2.6 sec | execution_time=2.630 user_time=0.050 system_time=0.010 children_user_time=0.000 children_system_time=0.000 cmk_time_agent=2.560
2

I have the same problem after upgrading and it’s still apparent in the latest patch for 2.5.0p3.

Did you find a solution? @Kevd

3

Heya.

On Windows, I ended up manually deleting the iis_app_pool_state.ps1 and that worked.

On Linux however, I can’t find a way to get rid of the qmail_stats section.. I don’t explicitly have any rules for that either. Uninstalling and reinstalling the Agent also did not solve it. But please to let me know if you find a way to get rid of that warning!

4

If I run the debug against the host when the iis_app_pool_statue.ps1 is present

cmk -d <hostname>

I get a strange output (below). I imagine the warning is because it’s got “Exiting the script because timestamp is too young.” at the end of the output.

<<<iis_app_pool_state:sep(124)>>>
.net v2.0 | 3
.net v2.0 classic | 3
.net v4.5 | 3
.net v4.5 classic | 3
classic .net apppool | 3
defaultapppool | 3
Exiting the script because timestamp is too young.
5

Hello @Kevd ,

this should be fixed with 2.5.0p4 via Werk #19207: mk_inventory: Remove spurious output from timestamp handling

Sunny Greetings

Hartmut

6

Hi @HartmutLeister

I have just updated to 2.5.0p6, unfortunately the qmail_stats issue is still present.

7

I am still seeing the same qmail_stats issue in Checkmk Community 2.5.0p8.

All my affected monitored systems are Debian servers.

The problem does not appear to depend on the installed agent version. I see the same behavior with both:

  • Checkmk agent 2.1.0p4

  • Checkmk agent 2.5.0p8

The issue only started after upgrading the Checkmk server from Community Edition 2.4 to 2.5.0p8. The qmail_stats service worked correctly before the server upgrade.

For hosts using agent 2.1, the Check_MK service reports:

Check_MK - [agent] Success, [piggyback] Successfully processed from source 'vmhost04',
Parsing of section qmail_stats failed WARN,
Missing monitoring data for plugins, qmail_stats WARN,
execution time 0.8 sec

For hosts using agent 2.5, service discovery reports:

Check_MK Discovery - Services: all up to date,
Host labels: all up to date,
Parsing of section qmail_stats failed WARN,
execution time 0.1 sec

The Checkmk server does receive the expected agent section. For example:

cmk -d hub01

returns:

<<<qmail_stats>>>
messages in queue: 0
messages in queue but not yet preprocessed: 0

This suggests that the agent-side data collection is working and that the problem is still in the Checkmk 2.5.0p8 server-side parser.

8

The new parse function in the qmail_qstats check plugin is not correct.

The old 2.4 check plugin used this line to get the metric from the output of qmail-qstat:

queue_length = saveint(info[0][-1])

The parse function in 2.5 just uses:

return Queue(int(string_table[0][0]))

It should use:

return Queue(int(string_table[0][-1]))

Maybe @moritz is able to correct this.