[Koha] Koha Server going down occasionally

[Dalton Fury]

I have made some progress thanks to rangi. So for some unknown reason,
plack and zebra went down sunday morning. The 503 was caused due to plack
going down.

Koha seem to be running fine after I restarted zebra and started plack.

Here are the logs for the crash:

1) zebra-error.log: 20160904 07:37:06 nitc-koha-zebra: client (pid 19241)
killed by signal 15, stopping
2) plack-error.log: https://paste.ubuntu.com/23134235/

Dalton