Icinga2 config master will segfault occasionally when it tries to sync up with secondary when it joins the cluster. I don’t see crash log or coredump generated.
What I need to do to get the crash log and coredump generated. Once the core is available, I can try to analyze it as given here Development - Icinga 2
A bit more information about your setup might be helpful to know.
We have some of the most useful things to include in the templates for our topics, you might want to include:
Version used (icinga2 --version)
Operating System and version
Enabled features (icinga2 feature list)
Icinga Web 2 version and modules (System - About)
Config validation (icinga2 daemon -C)
If you run multiple Icinga 2 instances, the zones.conf file (or icinga2 object list --type Endpoint and icinga2 object list --type Zone) from all affected nodes
Would you please mind updating to a recent Icinga 2 version? The last 2.10 release was 2.10.7 back in 2019 and it might be that your issue was already solved in the meantime.