Balázs Bence Sári created AMBARI-24919:
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Summary: Allow Namenode HA setup with external namenodes in
BlueprintConfigurationProcessor
Key: AMBARI-24919
URL: https://issues.apache.org/jira/browse/AMBARI-24919
Project: Ambari
Issue Type: Task
Affects Versions: 2.7.2
Reporter: Balázs Bence Sári
Assignee: Balázs Bence Sári
Fix For: trunk
There is an increasing demand for clusters with some of the components being
managed externally to Ambari.
This ticket addresses the problem where the cluster contains a HDFS_CLIENT but
server HDFS server components are external and NAMENODE is HA.
In this cases, cluster template validation failed as there were 0 name nodes
which is less than the expected minimum of two.
Going forward the following setup should pass validation:
- Namenode HA is enabled
- There are 0 namenodes
- all namenode dfs rpc addresses point to an external fqdn.
This will give sufficent protection against accidentally omitted namenodes,
however will enable clusters with external namenodes.
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