Hi All, I have found that restarting the machine on which my Icinga2 master instance is installed causes checks to stop until I manually stop the icinga2 service, delete the /var/lib/icinga2/icinga2.state file, and start the icinga2 service.
I have a fresh install of r2.5.4-1 on Ubuntu Server 16.04.1 via ppa:formorer/icinga. Other installations on same server are icingaweb2, graphite-api, and grafana. No satellites, hosts, services, etc. have been added. I only have default, out of the box monitoring of localhost. Setup was exhaustively documented if that helps. If I restart the machine, the "Last check" value in icingaweb2 stops changing and "Next check" will be a negative value that continues to grow. Performance data stops flowing to graphite. Deleting icinga2.state returns everything to normal until the next time the machine is restarted. I'm not seeing an errors in icinga2.err and the only reference to icinga2.state in icinga2.log is "Dumping program state to file '/var/lib/icinga2/icinga2.state'". There are some previous mailing list messages and bug reports about parsing errors related to the state file but I'm not seeing any such parsing errors in the log. It might be that I just don't have the appropriate logging enabled. I'm relatively new to Icinga2. Any suggestions on where to look next would be greatly appreciated.
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