Tools for instance and cluster state diagnosis

As we saw in the previous chapter, ElasticSearch exposes a lot of information about both machines and search usage. This lets us build monitoring applications as well as applications that show usage or other available statistics. There are many tools we can use for monitoring our cluster state. In this chapter we will only slightly touch the top of the pile of information about such applications, but we strongly advise you to get familiar with some of them as they can make your everyday work with ElasticSearch easier.

The first three tools are available as ElasticSearch plugins and present various information from ElasticSearch using JavaScript and AJAX techniques. Data is fetched periodically from the cluster, prepared for visualization on the browser side, and shown to the user.

Bigdesk

This tool allows us to track statistics on a particular node. The browser can present information up to the last one hour. The following screenshot shows the...