[GitHub] [hadoop] elek opened a new pull request #944: HDDS-1668. Add liveness probe to the example k8s resources files

[GitBox <gi...@apache.org>]

elek opened a new pull request #944: HDDS-1668. Add liveness probe to the example k8s resources files
URL: https://github.com/apache/hadoop/pull/944
 
 
   In kubernetes resources we can define livebess probes which can help to detect any failure. If the define port is not available the pod will be rescheduled.
   
   We need to add the liveness probes to our k8s resource files.
   
   Note: We shouldn't add readiness probes. Readiness probe is about the service availability. The service/dns can be available only after the service is restarted. This is not good for us as:
   
    * We need DNS resolution during the startup (See OzoneManager.loadOMHAConfigs)
    * We already implemented retry in case of missing DNS entries
   
   See: https://issues.apache.org/jira/browse/HDDS-1668

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