larsskj commented on issue #728:
URL: https://github.com/apache/solr-operator/issues/728#issuecomment-2655142543

   I'm hit by the same problem - and can elaborate with some more information.
   
   I want to run a Solr cloud and thought installing it using the Helm charts 
would be the easiest. Well - it is, until...
   
   But let me start with a bit of context: At home - where I want my Solr cloud 
- I have a small K8s cluster with four relatively high powered nodes running a 
lot of websites - all non-profit. The nodes have Core i7 CPUs and 64 GB memory, 
and on top of that I have installed Rook/Ceph running on four 2 TB SSDs. This 
works like a charm and runs some medium traffic websites - I'm quite happy 
about the setup.
   
   Next to the cluster, I have a Qnap NAS box offering, among other things, NFS 
shares.
   
   I've spent a couple of days trying to make this work - but I run into 
exactly the same problems as described here in the opening post. My problems 
persist, though.
   
   I have tried both letting the Solr Helm chart install everyting, and I have 
tried installing the ZK Helm first. I have tried removing the CRDs from the 
cluster and reinstalling them in various ways - to no avail.
   
   BUT: I can easily install a working solution - as long as I don't use 
persistent storage. Installing a cluster with ephemeral storage works out of 
the box.
   
   But when I ask the Helm installer to use Ceph RBD or CephFS, the ZK 
deployment fails exactly as described here.
   
   I then made a desperate attempt: Instead of Ceph, I tried using NFS on my 
NAS box as persistent storage - and voila, Helm build a working setup!
   
   That's not a viable solution moving forward as the NAS box becomes a single 
point of failure - but it proves that the solution works with some persistent 
storages.
   
   I use my Ceph solution a lot and it has never caused problems before - I'm 
really puzzled as to what goes on here?


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