Setting up ElasticSearch for Linux systems (advanced)

If you are using a Linux system, typically on a server, you need to manage extra setup to have a performance gain or to resolve production problems with many indices.

Getting ready

You need a working ElasticSearch installation.

How to do it...

For improving the performance on Linux systems, we will perform the steps given as follows:

1. First you need to change the current limit for the user who runs the ElasticSearch server. In these examples, we call the user as elasticsearch.

2. To allow elasticsearch to manage a large number of files, you need to increment the number of file descriptors (number of files) that a user can have. To do so, you must edit your /etc/security/limits.conf and add the following lines at the end:

   elasticsearch       -       nofile          999999
   elasticsearch       -       memlock         unlimited

   Then a machine restart is required to be sure that changes are taken.

3. For controlling the memory swapping, you need to set up...