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Add documentation about automatic service restarts with systemd, refs #5721

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Max Rosin 2017-11-15 01:03:15 +01:00
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doc/02-getting-started.md
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@ -347,6 +347,24 @@ Examples:
If you're stuck with configuration errors, you can manually invoke the If you're stuck with configuration errors, you can manually invoke the
[configuration validation](11-cli-commands.md#config-validation). [configuration validation](11-cli-commands.md#config-validation).
Usually Icinga 2 is a mission critical part of infrastructure and should be
online at all times. In case of a recoverable crash (e.g. OOM) you may want to
restart Icinga 2 automatically. With Systemd it is as easy as overriding some
settings of the Icinga 2 Systemd service by creating
`/etc/systemd/system/icinga2.service.d/override.conf` with the following
content:
[Service]
Restart=always
RestartSec=1
StartLimitInterval=10
StartLimitBurst=3
Run `systemctl daemon-reload && systemctl restart icinga2` to apply the changes.
Now Systemd will always try to restart Icinga 2 (except if you run
`systemctl stop icinga2`). After three failures in ten seconds it will stop
trying because you probably have a problem that requires manual intervention.
> **Tip** > **Tip**
> >
> If you are running into fork errors with Systemd enabled distributions, > If you are running into fork errors with Systemd enabled distributions,