Initial environment:
| Node name | Service Name |
| warehouse-hadoop1 | |
| ambari-hadoop2 | region server |
| ambari-hadoop3 | hmater、 region server |
Plan to add hmaster to ambari-hadoop1 to avoid single point of failure of hmaster,
step1: Add standby Hmaster
step2: Select ambari-hadoop1 as the backup hmaster
step3: Enable standby Hmaster
ambari-hadoop1 Hmaster Web page displays:
ambari -hadoop2 active Hmaster Web page displays:
