Only hosts that are decommissioned using Cloudera Manager can be
recommissioned.
Minimum Required Role:
Operator
(also provided by Configurator,
Cluster Administrator, Limited
Cluster Administrator , and Full
Administrator)
- In Cloudera Manager, select the cluster where you want to
recommission hosts.
- In the left menu, click .
- Select the hosts that you want to recommission.
- Select .
The
End Maintenance (Suppress Alerts/Decommission
dialog box opens. The role instances running on the hosts display at
the top.
- To recommission the hosts, select Recommission
Host(s).
- Choose one of the following:
- Bring hosts online and start all
roles
All decommissioned roles will be
recommissioned and started. HDFS DataNodes will be started first
and brought online before decommissioning to avoid excess
replication.
- Bring hosts online
All decommissioned
roles will be recommissioned but remain stopped. You can restart the
roles later.
- Click End Maintenance.
The Recommission Hosts and Start
Roles Command dialog box opens and displays the progress of
recommissioning the hosts and restarting the roles