oliverdding commented on pull request #11427:
URL: https://github.com/apache/druid/pull/11427#issuecomment-896742361


   > Thank you for your contribution @oliverdding. I had some questions and 
suggestions
   > 
   > * what zk ensemble, the druid services will be initialized with after your 
changes? We would still need to pass `druid_zk_service_host`  somehow?
   > * Instead of removing `mysql` and `postgres` entirely, I will suggest 
keeping them with `enabled` as `false` in default `values.yaml`. You can have 
two more `values.yaml` files inside `mysql` and `postgres` folder that a user 
can choose to override default `values.yaml` with.
   
   1. Yes, you need to pass `druid_zk_service_host` if you want to use druid 
under zookeeper, but I consider that free from zookeeper is the future [run 
without 
zookeeper](http://druid.apache.org/docs/latest/development/extensions-core/kubernetes.html),
 so we should leave this blank in the base chart.
   2. I did this considering that:
      * That's not K.I.S.S. User may want to deploy druid with mysql, may want 
to deploy without zookeeper... Though postgresql and zookeeper are our 
dependencies, we should not package them with our application.
      * User should deploy their own pod to fill in their own business. For 
example, my company has postgresql deployed as base componment, so I just want 
the druid to use that one instead of taking it's own without deployed.


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