Icinga 2.9.0 provided many many bugfixes and one change has unfortunately been overseen. If you use an init system different to Systemd (e.g. Sysvinit) or the “-d/–daemonize” option in your containers, issue #6445 causes troubles. This is visible with logging, cluster connects, IDO database writing. Users reported problems on CentOS 6, SLES 11, Ubuntu 14, Debian 8, Gentoo (both with Sysvinit).
Thanks to the quality feedback from community members and contributors, we’ve analysed and fixed the problem last week. Next to that, Dirk has updated the SELinux policy to allow Systemd notifies, and another fix deals with init script sourcing on non-posix systems.