If you're running on Linux, you must ensure that:
- vm.max_map_count is greater or equals to 262144
- fs.file-max is greater or equals to 65536
- the user running SonarQube can open at least 65536 file descriptors
You can see the values with the following commands :
You can set them dynamically for the current session by running the following commands as root:
To set these values more permanently, you must update either /etc/sysctl.d/99-sonarqube.conf (or /etc/sysctl.conf as you wish) to reflect these values.
If the user running SonarQube (sonarqube in this example) does not have the permission to have at least 65536 open descriptors, you must insert this line in /etc/limits.d/99-sonarqube.conf (or /etc/limits.conf as you wish) :
You can get more detail in the Elasticsearch documentation.