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Posted to hdfs-issues@hadoop.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/06/11 09:40:00 UTC
[jira] [Updated] (HDDS-1668) Add liveness probe to the example k8s
resources files
[ https://issues.apache.org/jira/browse/HDDS-1668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated HDDS-1668:
---------------------------------
Labels: pull-request-available (was: )
> Add liveness probe to the example k8s resources files
> -----------------------------------------------------
>
> Key: HDDS-1668
> URL: https://issues.apache.org/jira/browse/HDDS-1668
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Elek, Marton
> Assignee: Elek, Marton
> Priority: Major
> Labels: pull-request-available
>
> 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
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