putting a check if a process exited #547
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Under restart the init script is stopping the process and starting it again.
When stopping it does not wait and issues a SIGTERM to the process, this causes trouble when the server was not able to shutdown within a minuscule time and a start is issued.
The same thing we encountered in production where under restart the server was not able to stop and a start was issued.
Logs:
[2018-01-30 15:40:45.198] nc.c:187 nutcracker-0.4.0 built for Linux 3.16.0-4-amd64 x86_64 started on pid 66313
[2018-01-30 15:40:45.199] nc.c:192 run, rabbit run / dig that hole, forget the sun / and when at last the work is done / don't sit down / it's time to dig another one
[2018-01-30 15:40:45.203] nc_stats.c:840 bind on m 4 to addr '0.0.0.0:15050' failed: Address already in use
Fix:
Waiting for the process to end and then issuing Kill if it does not stop.