Dmitry Sen created AMBARI-2928:
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Summary: Add a Nagios alert to check state of NN HA
Key: AMBARI-2928
URL: https://issues.apache.org/jira/browse/AMBARI-2928
Project: Ambari
Issue Type: Improvement
Components: agent
Affects Versions: 1.4.0
Reporter: Dmitry Sen
Assignee: Dmitry Sen
Fix For: 1.4.0
Attachments: AMBARI-2928.patch
Add Nagios alert
Title: "NameNode HA Healthy"
Check if one NN has tag.HAState = active and second NN has tag.HAState =
standby.
Scenarios:
1.
Active + Standby NN are up
OK: NameNode HA healthy true; Active<dev01.hortonworks.com>,
Standby<dev02.hortonworks.com>, Unavailable<>
2.
Two Standby NNs are up
CRITICAL: No Active NN available; Active<>,
Standby<dev01.hortonworks.com:dev02.hortonworks.com>, Unavailable<>
3.
Two Active NN are up
CRITICAL: No Active NN available; No failover NN available;
Active<dev01.hortonworks.com:dev02.hortonworks.com>, Standby<>, Unavailable<>
4.
Both NN unavailable
CRITICAL: No Active NN available; No failover NN available: Active<>,
Standby<>, Unavailable<dev01.hortonworks.com:dev02.hortonworks.com>
5.
Only one NameNode in cluster (no additional/standby NameNode configured)
CRITICAL: No failover NN available: Active<dev01.hortonworks.com>, Standby<>,
Unavailable<>
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