This is the documentation for Cloudera Manager 5.1.x. Documentation for other versions is available at Cloudera Documentation.

Starting, Stopping, and Restarting Cloudera Manager Agents

Starting Agents

To start Agents, the supervisord process, and all managed service processes, use one of the following commands:
  • Start
    $ sudo service cloudera-scm-agent start
  • Clean Start
    $ sudo service cloudera-scm-agent clean_start
    The directory /var/run/cloudera-scm-agent is completely cleaned out; all files and subdirectories are removed, and then the start command is executed. /var/run/cloudera-scm-agent contains on-disk running Agent state. Some Agent state is left behind in /var/lib/cloudera-scm-agent, but you shouldn't delete that. For further information, see Server and Client Configuration and Process Management.

Stopping and Restarting Agents

To stop or restart Agents while leaving the managed processes running, use one of the following commands:
  • Stop
    $ sudo service cloudera-scm-agent stop
  • Restart
    $ sudo service cloudera-scm-agent restart

Hard Stopping and Restarting Agents

  Warning: The hard_stop, clean_restart, or hard_restart commands kill all running managed service processes on the host(s) where the command is run.
To stop or restart Agents, the supervisord process, and all managed service processes, use one of the following commands:
  • Hard Stop
    $ sudo service cloudera-scm-agent hard_stop
  • Hard Restart
    $ sudo service cloudera-scm-agent hard_restart
    Hard restart is useful for the following situations:
    1. You're upgrading Cloudera Manager and the supervisord code has changed between your current version and the new one. To properly do this upgrade you'll need to restart supervisor too.
    2. supervisord is hung and needs to be restarted.
    3. You want to clear out all running state pertaining to Cloudera Manager and managed services.
  • Clean Restart
    $ sudo service cloudera-scm-agent clean_restart
    Runs hard_stop followed by clean_start.

Checking Agent Status

To check the status of the Agent process, use the command:
$ sudo service cloudera-scm-agent status
Page generated September 3, 2015.