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When does systemd kill service immediately after start?
The problem is that when systemd starts the services it immediately stops them. When I use the following ExecStart directive everything is working fine. But when I make ths following small improvement, I find in OSSEC logs that it receives SIG 15 after start. If I make another small change, the service will receive SIG 15 after 20 seconds.
How to Auto Restart a service in systemd-ttias?
You can however let systemd auto-restart it in case it fails or is accidentally killed. To do so, you can add the Restart option to the [Service] stanza. The above will react to anything that stops your daemon: a code exception, someone that does kill -9 , … as soon as your daemon stops, systemd will restart it in 5 seconds.
What does restart = on-abnormal do in systemd?
Restart=on-abnormal From the documentation ( systemd.service and systemd.service ), I’d expect that if I kill foo_app in a way such that Restart=on-abnormal is triggered (e.g. killall -9 foo_app ), systemd should give priority to Restart=on-abnormal over OnFailure=systemd-reboot.service and not start systemd-reboot.service.
When to kill or restart systemctl reload myservice?
When its configuration file changes, it needs to be killed and restarted. In other words, after editing the config file, systemctl reload MYSERVICE should kill the process and restart it. Attempt 1: Try the defaults.
What causes a service not to start correctly?
Readiness protocol mismatches cause services not to start correctly, or (more usually) to be (mis-)diagnosed by systemd as failing.
Which is the correct setting for readiness protocol systemd?
As Wieland implied, the Type of the service is important. That setting denotes what readiness protocol systemd expects the service to speak. A simple service is assumed to be immediately ready. A forking service is taken to be ready after its initial process forks a child and then exits.
Why does execreload stop working in CentOS systemd?
In the simple protocol, the initial process is taken to be the service process. But in fact a sh -c wrapper runs the actual service program as a child process. So MAINPID goes wrong and ExecReload stops working, for starters. When using Type=simple, one must either use sh -c ‘exec …’ or not use sh -c in the first place.