[GitHub] [hadoop] elek edited a comment on issue #945: HDDS-1646. Support real persistence in the k8s example files

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

elek edited a comment on issue #945: HDDS-1646. Support real persistence in the k8s example files 
URL: https://github.com/apache/hadoop/pull/945#issuecomment-500825750
 
 
   I created a new kubernetes cluster definition (`getting-started`). After this patch we will have the following resources:
   
    * minikube (for Minkube usage, ephemeral)
    * getting-started (for real kubernetes cluster, ephemeral)
    * ozone (for normal use-cases, real persistence)
    * ozone-dev (for development and performance test, ephemeral by default)
   
   Included in this jira:
   
    * I created rules to add LocalPersistentVolume based PVC
    * I removed the support of daemonset based datanodes as it's not possible to support PVs
    * I added pod antiAffinity rules to ensure that the statefulset based pods are scheduled to different nodes
    * securityContext/fsGroup is used to make sure that we have permission to write the volumes 

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