I have HDP3 High Availability enabled on the cluster. I have tested it and everything seems to be fine.
Now, I have to add another namenode, which makes this setup from NN1, NN2 to NN1, NN2, NN3. If we look at the steps that are needed from Apache documentation as :
I change configurations as
dfs.ha.namenodes.mycluster -> nn1,nn2,nn3
su -l hdfs -c "hdfs namenode -bootstrapStandby -force"
I am getting an error like nn/vmhdpmaster003@REALM.com is able to get ticket, because there is no keytab file at /etc/security/keytabs. My cluster is configured with AD integration.
Please help me how to create this missing keytab. Why ambari does not create a keytab itself? Is there a way to generate keytabs for service accounts via curl for ambari?