fix: set restart limits to 0 to prevent being marked as failed #1952
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The systemd default is 10s / 5 for these values with a DefaultRestartUSec of 100ms. Most services set a RestartSec limit of 3, under most circumstances it takes 15s to restart 5 times so the limit of 10s is not exceeded. However if other system processes (salt, cloud init) restart it explicitly, or recovering system services within the --before chain trigger a restart the limit can be exceeded causing it to be marked as failed. Since no services mark gotrue.service as required it will remain offline until the next explicit restart is issued. Setting these values to 0 with Restart=always and RestartSec=3 will prevent gotrue from being marked as failed.
I've noticed all !oneshot services set a `RestartSec` of `3s` and we use the systemd defaults of `StartLimitBurst=5` and `StartLimitInterval=10s`. Together this forms a property that under typical conditions a service will be restarted indefinitely until it comes back up due to `(3s * 5) > 10s`, but it is still possible for a service to enter a failed state under some scenarios. This change defensively sets them to 0/0 to keep them in restart loops.
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The systemd default is 10s / 5 for these values with a DefaultRestartUSec of 100ms. Most services set a RestartSec limit of 3, under most circumstances it takes 15s to restart 5 times so the limit of 10s is not exceeded. However if other system processes (salt, cloud init) restart it explicitly, or recovering system services within the --before chain trigger a restart the limit can be exceeded causing it to be marked as failed. Since no services mark gotrue.service as required it will remain offline until the next explicit restart is issued.
Setting these values to 0 with Restart=always and RestartSec=3 will prevent gotrue from being marked as failed.