How to automatically reboot memcached on crash?

Question

I've got memcached set up, and it's integral to the performance of one of my sites. Following WF's instructions, memcached will restart if the server is rebooted. But if only memcached crashes, it doesn't restart automatically, and it takes the website down with it.

How can I set it up so that memcached will restart automatically if it crashes?

Answer 1

You would need to set up a cronjob to run a script something like the following. It could be set to run every 5 minutes for example.

#!/bin/bash

if ps -u <username> |grep -E 'memcached$' > /dev/null
then
  echo "memcached is running."
else
  echo "starting memcache."
  rm /home/<username>/webserver/sock/memcached.sock
  rm /home/<username>/webserver/pid/memcached.pid
  /usr/bin/memcached -d -m 50 -s /home/<username>/webserver/sock/memcached.sock -P /home/<username>/webserver/pid/memcached.pid
fi

How to automatically reboot memcached on crash?

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