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https://issues.apache.org/jira/browse/CASSANDRA-12525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17675633#comment-17675633
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Stefan Miklosovic commented on CASSANDRA-12525:
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[~xgerman42]
please find the patch here: https://github.com/apache/cassandra/pull/2085/files
I took what you did and finished the test, also all changes are squashed into
one commit. Please go through it and verify my logic is correct. We might then
ask for the second review.
> When adding new nodes to a cluster which has authentication enabled, we end
> up losing cassandra user's current crendentials and they get reverted back to
> default cassandra/cassandra crendetials
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-12525
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12525
> Project: Cassandra
> Issue Type: Bug
> Components: Cluster/Schema, Local/Config
> Reporter: Atin Sood
> Assignee: German Eichberger
> Priority: Normal
> Fix For: 3.0.x, 3.11.x, 4.0.x, 4.1.x, 4.x
>
> Time Spent: 2h 50m
> Remaining Estimate: 0h
>
> Made the following observation:
> When adding new nodes to an existing C* cluster with authentication enabled
> we end up loosing password information about `cassandra` user.
> Initial Setup
> - Create a 5 node cluster with system_auth having RF=5 and
> NetworkTopologyStrategy
> - Enable PasswordAuthenticator on this cluster and update the password for
> 'cassandra' user to say 'password' via the alter query
> - Make sure you run nodetool repair on all the nodes
> Test case
> - Now go ahead and add 5 more nodes to this cluster.
> - Run nodetool repair on all the 10 nodes now
> - Decommission the original 5 nodes such that only the new 5 nodes are in the
> cluster now
> - Run cqlsh and try to connect to this cluster using old user name and
> password, cassandra/password
> I was unable to connect to the nodes with the original credentials and was
> only able to connect using the default cassandra/cassandra credentials
> From the conversation over IIRC
> `beobal: sood: that definitely shouldn't happen. The new nodes should only
> create the default superuser role if there are 0 roles currently defined
> (including that default one)`
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