[GitHub] [couchdb-helm] colearendt opened a new issue, #78: Changed erlang cookie

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

colearendt opened a new issue, #78:
URL: https://github.com/apache/couchdb-helm/issues/78

   
   **Describe the bug**
   
   The auto-generated erlang cookie (#68) changes on each helm deployment. As a result, it causes issues with rolling over the cluster.
   
   **Version of Helm and Kubernetes**: 3.8.3 and 1.21
   
   
   **What happened**: Each time we roll over the cluster (i.e. deploy config changes), it short circuits on replication failure b/c the two CouchDB nodes are running with different cookies. As a result, it never completes roll-over and stops with one restarted unhealthily:
   
   ```
   NAME                READY   STATUS    RESTARTS   AGE
   couch-1-couchdb-0   1/1     Running   0          105m
   couch-1-couchdb-1   0/1     Running   0          61m
   ```
   
   
   **What you expected to happen**: Roll over the cluster happily
   
   
   **How to reproduce it** (as minimally and precisely as possible): Deploy helm chart twice
   
   
   **Anything else we need to know**:
   
   Potentially related to #77 
   
   Possible fix is to use a stateful generation pattern like #74 
   
   Alternatively, could make clear in the docs that setting the `erlangFlags.setcookie` value is required in order for "rollover" to happen cleanly, change the update policy for the chart, etc.
   
   Related: if you set this variable, then it passes as a command line argument and not as a secret env var. This should be able to be toggled independently IMO (since an HA cluster being able to restart safely / consistently depends on consistency here)
   
   


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[GitHub] [couchdb-helm] willholley closed issue #78: Changed auto-generated erlang cookie causes cluster restart issues

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

willholley closed issue #78: Changed auto-generated erlang cookie causes cluster restart issues
URL: https://github.com/apache/couchdb-helm/issues/78


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