We know to configure HDFS HA manually using the different commands we learned in Chapter 4, Exploring HDFS Federation and Its High Availability. In this section, we will use Cloudera Manager to configure HDFS HA and see how quickly we can set it up just with a few clicks, making the entire process more efficient.
The following are the steps to configure HDFS HA using Cloudera Manager:
Log in to Cloudera Manager, navigate to the Clusters menu, and select the HDFS service from the Services section.
Next, click on the Instances tab. The screen should look like the one shown in the following screenshot:
Click on the Enable High Availability button to bring up the four step wizard to configure high availability as shown in the following screenshot:
Select the node that will host the standby namenode and the nodes that will host the Journal Node daemons. In the following screenshot, you will see that we have selected
node2.hclusterto be the standby...