Re: Migrate Solr helm chart into apache/lucene-solr repo
A Helm chart is a bunch of yaml files that specifies all the necessary configuration to get an application up and running on Kubernetes which sits on top of Docker. And Helm is a program that “installs” this chart.
For instance, to run a Solr cluster on Docker, you would need to first launch zookeeper containers, forward some ports, and then get a working cluster by launching multiple Solr containers pointing to the zookeepers.
The Helm chart takes away all the fuss by allowing you to launch a full Solr cluster including everything said above with a single command.
The GitHub repository where this chart’s source code is currently at is managed by the Helm team and will be marked obsolete in Nov 2020. It means that no more PR and Issues can be raised for Solr and other charts in that repo.
They want someone to take ownership of the charts, and I think the best place is for the Solr chart is with the Solr team.
All charts there will also be delisted in May 2020 (very soon) from Helm Hub https://hub.helm.sh/, the “maven central for Helm charts”.
It’s best a new home can be found for Solr chart soon.
There are other Apache charts in that repo as well such as Hadoop and Zookeeper and those need to go somewhere as well.
I was looking for a "Why" Helm is ending its registry and didn't find it, though I did find the 2x vs 3x thing so I thought it was about version migration more than anything. I'm wondering "Why" because this very project, Solr, will soon be grappling with how to create a repository of 3rd party plugins. Successful projects like Docker do this so I wonder why Helm seems to be backing out. Perhaps we will have one main repository of 3rd party plugins we've vetted in some way (have high confidence in) and then for others we simply list URLs to "known" repos of packages of plugins that we have no opinion of. This is uncharted territory for us. Unlike Helm & Docker, I don't expect a vast number of entries.