shirsha ray chaudhuri created AMBARI-20580:
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Summary: Cluster doesnot come up successfully when NameNodes that
host HA have symmetric components
Key: AMBARI-20580
URL: https://issues.apache.org/jira/browse/AMBARI-20580
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 2.4.1
Reporter: shirsha ray chaudhuri
We are trying to use Ambari Blueprints to bring up a Cluster with Name Node HA.
The hosts that have the Name Node component have symmetric set of components,
so they belong to the same host_group.
This host group is updated in the blueprint that is forwarded to the ambari
server before the Cluster creation is triggerred with the Cluster Topology.
Ambari Server cannot map the hosts to the 2 namenodes rightly, in the
hdfs-site.xml.
For instance, here's a snippet from hdfs-site.xml
<property>
<name>dfs.namenode.http-address.ourcluster.nn1</name>
<value>host-10-194-11-42.nokia.com:50070</value>
</property>
<property>
<name>dfs.namenode.http-address.ourcluster.nn2</name>
<value>host-10-194-11-42.nokia.com:50070</value>
</property>
<property>
<name>dfs.namenode.https-address.ourcluster.nn1</name>
<value>host-10-194-11-42.nokia.com:50470</value>
</property>
<property>
<name>dfs.namenode.https-address.ourcluster.nn2</name>
<value>host-10-194-11-42.nokia.com:50470</value>
</property>
After Cluster creation is triggerred, the HDFS Service doesnot come up, because
neither of the nodes are in active mode.
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