Increasing_Service_Limits

Step 1. Increase global limits

Ensure /etc/security/limits.conf has sufficients limits for number of opened files for a process. An example configuration is

root soft nofile 65535
root hard nofile 65535
* hard nofile 65535
* soft nofile 65535
* hard nproc 65535
* soft nofile 65535

Step 2. Increase per-process limits for

• Supervisord based service

  • in supervisor config file (e.g. /etc/contrail/supervisord_config.conf) in the supervisord section set minfds and minprocs. for e.g.

    ...
    [supervisord]
    minfds=10240
    minprocs=200
    ...
    

• Upstart based service

  • in upstart config file (e.g. in /etc/init/zookeeper.conf) set number of files with nofile for e.g.

    limit nofile 8192 8192
    

Step 3. Restart service

service <name> restart