System Requirements for running Elasticsearch

Elasticsearch requires Java 8 or later in order to run. It is recommended to use the OpenJDK for running Elasticsearch.

In addition, the following system requirements must be met in order to run Elasticsearch:

• Minimum of 2GB of memory and 2 CPU cores.
• Minimum of 50GB of free disk space.
• Minimum of 1GB of swap space.

For production deployments, it is recommended to use a minimum of 4GB of memory and 4 CPU cores, and at least 100GB of free disk space.

Below is an example of how to check the available memory on a Linux system:

$ free -m
              total        used        free      shared  buff/cache   available
Mem:           7862        6014         654          80        1193        1275
Swap:          2047           0        2047

The output above shows that the system has 7862MB of RAM and 2047MB of swap space.

For more information, please refer to the Elasticsearch documentation.

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