Daan De Meyer
ca50a3cd2f
The RestartSteps= documentation explains the ratio between two restart delays. It doesn't say how long the service manager keeps restarting a failing service, and that's what an operator usually wants to know. Once the delays grow past 10s, the restarts never hit the built-in start rate limit, and the service is restarted forever. Let's document the sum of the delays until RestartMaxDelaySec= is reached, using the formula proposed in #39197. Let's also show how to pick StartLimitBurst= and StartLimitIntervalSec= so the unit fails once the delay stops growing. A successful restart doesn't reset the restart counter. Earlier starts in the current start limit interval can change when the unit fails. Let's state the example's assumptions and document how to reset the restart counter and start rate limit.
System and Service Manager
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