Adding a DNS check
Almost every application has external dependencies, such as databases, Redis caches, e-mail servers, and so on. Although it is generally reliable, DNS can occasionally cause problems and, at first glance, it can be difficult to diagnose. By adding a check that constantly checks the DNS record, you can be assured that these dependencies are available.
Getting ready
For this recipe, you will need an Ubuntu 14.04 host to act as the Sensu check-host and a Sensu server to connect to. You should also have installed the prerequisite packages as detailed in the recipe Installing check prerequisites.
How to do it…
Let's start by adding DNS check to track DNS records:
- For this recipe, we're going to install the
sensu-plugins-dns. Use the following ...
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