when does Graceful shutdown happens?

[avyas]

I have a script which many a times exits when an error is encountered.
Have it on using forever service, Found that the service status is stopped, many a times.

is that something to do with graceful shutdown?

btw I have a node program with error, installed as a service and there I do not see the service status as stopped.

[arvind-agarwal]

I would advise you to look at your node app code and debug why it exits. This has nothing to do with graceful shutdown, graceful shutdown only ensures that services get a chance to do cleanup on request for stopping them.

[avyas]

Thanks for the answer. What could be the cases when the service could stop automatically ?

I have following in the log when my service stopped last time .

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.
.
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error: restarting script because change changed
error: restarting script because change changed
error: restarting script because change changed
error: restarting script because change changed
error: Forever detected script exited with code: 143
error: Script restart attempt #1

events.js:72
throw er; // Unhandled 'error' event
^
Error: spawn ENOENT
at errnoException (child_process.js:1001:11)
at Process.ChildProcess._handle.onexit (child_process.js:792:34)

[acrawly]

Not sure if this should be asked here but how would I shutdown a service after it's installed? For example I do forever-service install my_app --script main.js. Now how do I stop and start that app manually?