Datastax Error : Cassandra - Saved cluster name Test Cluster != configured name



While changing existing cluster name in datastax, i got name mismatch exception in log file. Process i followed was changed the cluster name in cassandra.yaml configuration file.

$ nano /etc/dse/cassandra/cassandra.yaml

   cluster_name: 'Test Cluster1'








Solution : 


Change the cluster name  to "New Cluster Name" :

$ cqlsh `hostname -I`

cqlsh> UPDATE system.local SET cluster_name = 'New Cluster Name' where key='local';
cqlsh> exit;

$ nodetool flush system

Stop the cluster :

$ sudo service dse stop;sudo service datastax-agent stop

Edit the file :

$ sudo vi /etc/dse/cassandra/cassandra.yaml
    cluster_name: 'New Cluster Name'

Start the cluster :

$ sudo service dse start;sudo service datastax-agent start

Check Installation log :

 $ cat /var/log/cassandra/output.log


Reference  : https://support.datastax.com/hc/en-us/articles/205289825-Change-Cluster-Name-

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