Adding a process check
One important item to monitor is if a process is actually running on a system. It's little use knowing that you have plenty of disk and CPU resources, but not realizing that your apache server has fallen over. Sensu can be used to monitor the key processes that are running on your server and it can alert you if a process has gone AWOL.
This recipe shows you how to check if the sshd process is running on any host subscribed to the common subscriptions; however, the same technique can be used to monitor any process.
Getting ready…
For this recipe, you will need both a Sensu server and at least one Sensu host. You should also have installed the prerequisite packages as detailed in the recipe Installing check prerequisites.
How ...
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