hi,
I just tried 3 diff. ways…
1st i set the “Execute container using high privilege" within Synology Docker settings.
2nd I tried with “–cap-add=SYS_ADMIN”
and 3rd I tired with “–privileged”
but none of these give success
when I check the cmc.log.
tail -f /omd/sites/cmk/var/log/cmc.log
i see:
2021-02-03 20:21:52 [5] [icmpsender 1701] started, commandline: /omd/sites/cmk/lib/cmc/icmpsender 8 0 1000
2021-02-03 20:21:52 [4] [icmpsender 1701] Cannot create raw socket (missing SUID root?): Operation not permitted
2021-02-03 20:22:22 [4] [icmpsender 1701] Cannot send IP addresses to icmpsender: Broken pipe
2021-02-03 20:22:22 [3] [icmpsender 1701] exited with status 1
2021-02-03 20:22:22 [5] [icmpsender 1850] started, commandline: /omd/sites/cmk/lib/cmc/icmpsender 8 0 1000
2021-02-03 20:22:22 [4] [icmpsender 1850] Cannot send IP addresses to icmpsender: Broken pipe
2021-02-03 20:22:22 [3] [icmpsender 1850] exited with status 1
2021-02-03 20:22:22 [5] [icmpsender 1851] started, commandline: /omd/sites/cmk/lib/cmc/icmpsender 8 0 1000
2021-02-03 20:22:22 [4] [icmpsender 1851] Cannot create raw socket (missing SUID root?): Operation not permitted
2021-02-03 20:22:52 [4] [icmpsender 1851] Cannot send IP addresses to icmpsender: Broken pipe
2021-02-03 20:22:52 [3] [icmpsender 1851] exited with status 1
2021-02-03 20:22:52 [5] [icmpsender 2037] started, commandline: /omd/sites/cmk/lib/cmc/icmpsender 8 0 1000
2021-02-03 20:22:52 [4] [icmpsender 2037] Cannot send IP addresses to icmpsender: Broken pipe
2021-02-03 20:22:52 [3] [icmpsender 2037] exited with status 1
so i did:
chmod u+s ./opt/omd/sites/cmk/lib/cmc/icmpsender
but now the error is gone within the cmc.log - BUT still all hosts are down
best regards