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https://issues.apache.org/jira/browse/CASSANDRA-12505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15428377#comment-15428377
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Mike commented on CASSANDRA-12505:
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I haven't found it in any Cassandra documentation regarding adding new node/DC,
but after I run nodetool repair -full, I was able to login into new node.
> Authentication failure for new nodes
> ------------------------------------
>
> Key: CASSANDRA-12505
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12505
> Project: Cassandra
> Issue Type: Bug
> Environment: Ubuntu 16.04
> Reporter: Mike
> Priority: Critical
>
> I added new data center with one node to a cluster. The cluster currently has
> 5 nodes in 3 data centers. I changed the replication factor of system_auth
> keyspace according to the number of nodes. I run nodetool repair and rebuild
> on new nodes, but I cannot login to the new nodes. cqlsh reports the
> following error:
> {noformat}
> Connection error: ('Unable to connect to any servers', {'ip':
> AuthenticationFailed(u'Failed to authenticate to ip: code=0100 [Bad
> credentials] message="Username and/or password are incorrect"',)})
> {noformat}
> I tried using both the SimpleStrategy and NetworkTopologyStrategy for the
> system_auth keyspace without changes. I am still able to login into old
> nodes. nodetool status reports that every node owns 100% of the system_auth
> keyspace. The log file does not show any errors.
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