Database Reference
In-Depth Information
Adding a role instance to a host
To add a role instance to a host, navigate to
Hosts
from the Cloudera Manager toolbar. You
should see a screen as shown in the following screenshot:
As you can see, the
node4.hcluster
host does not have any roles assigned to it. Let's
say that we want the
node4.hcluster
host to run datanode and tasktracker daemons.
To do this, we need to add the DataNode and TaskTracker roles to this host.
Adding a DataNode role to a host
The following are the steps to add the DataNode role to a host:
1. Navigate to the Cloudera Manager's
Clusters
menu and select
HDFS
as shown in
the following screenshot:
