[ https://issues.apache.org/jira/browse/AMBARI-21893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aravindan Vijayan updated AMBARI-21893: --------------------------------------- Attachment: AMBARI-21893.patch > NameNode Heap Usage (Daily) metric alert status flips to UNKNOWN > intermittently when AMS HTTPS is enabled. > ---------------------------------------------------------------------------------------------------------- > > Key: AMBARI-21893 > URL: https://issues.apache.org/jira/browse/AMBARI-21893 > Project: Ambari > Issue Type: Bug > Components: ambari-metrics > Affects Versions: 2.6.0 > Reporter: Aravindan Vijayan > Assignee: Aravindan Vijayan > Fix For: 2.6.0 > > Attachments: AMBARI-21893.patch > > > Underlying Issue > This issue is because of AMS HTTPS + HA scenario. The CA cert file > (/etc/ambari-metrics-monitor/conf/ca.pem) found on every host is generated by > fetching a specific metric collector host's certificate from the truststore. > This certificate file is being used by alert script, service check and even > monitors to talk to collector. > * For example, in a cluster with hosts H1 to H5, let's say there are 2 > collectors - H1 & H2. > * On a node H3, let's say the ca.pem file was constructed using the > certificate for collector H2. > * Service check or metric monitor on H3 will NOT be able to talk to H1 since > it does not have the certificate for that host. -- This message was sent by Atlassian JIRA (v6.4.14#64029)