Installing Atlas in HA

When you are using the CDP Public Cloud flavor, you must install Atlas in HA using the Cloudera Manager UI.

Log into Cloudera Manager and verify that Atlas service is running.
Stop the Atlas service.
Go to Clusters > Select Atlas > Instances > Add Role Instances > Add Atlas Service role to the required host and proceed with the wizard to complete the process.
Restart services for stale configurations.

note
Cloudera recommends that the selected cluster in the Cloudera Manager must be Kerberos enabled but it is not a mandatory requirement.
Using the Cloudera Manager UI, verify that both Atlas services are running (services are green).
The active Atlas instance can be found using a HTTP status request to each Atlas instance:
- http://<atlas_host_1>:3100/api/atlas/admin/status
- http://<atlas_host_2>:3100/api/atlas/admin/status
The response for ACTIVE instance will be:{"Status":"ACTIVE"} The response for PASSIVE instance will be:{"Status":"PASSIVE"}
Atlas is currently running in the HA mode (active-passive mode)