cassandra - Saved cluster name Test Cluster != configured name - cassandra

Question

How am I supposed to bot a new Cassandra node when I get this error?
INFO [SSTableBatchOpen:1] 2014-02-25 01:51:17,132 SSTableReader.java (line 223) Opening /var/lib/cassandra/data/system/local/system-local-jb-5 (5725 bytes)
ERROR [main] 2014-02-25 01:51:17,377 CassandraDaemon.java (line 237) Fatal exception during initialization
org.apache.cassandra.exceptions.ConfigurationException: Saved cluster name Test Cluster != configured name thisisstupid
at org.apache.cassandra.db.SystemKeyspace.checkHealth(SystemKeyspace.java:542)
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:233)
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:462)
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:552)
Name of cluster in the cassandra.yaml file is:
cluster_name: 'thisisstupid'
How do I resolve?

Answer 1

You can rename the cluster without deleting data by updating it's name in the system.local table (but you have to do this for each node...)
cqlsh> UPDATE system.local SET cluster_name = 'test' where key='local';
# flush the sstables to persist the update.
bash $ ./nodetool flush
Finally you need to rename the cluster to the new name in cassandra.yaml (again on each node)

Answer 2

The above commands with UPDATE SET cluster_name does not work for me. I found the working is to follow the instructions from the DataStax documentation on Initializing a multiple node cluster:
sudo service cassandra stop
sudo rm -rf /var/lib/cassandra/data/system/*
sudo vi /etc/cassandra/cassandra.yaml, setup the proper parameters
sudo service cassandra start
nodetool status
For some good cluster node setups, I found this blog post to be very useful.

Answer 3

I had same issue with Datastax4.7 enterprise edition. I resolved it with above instructions:
Change the cluster name back to "test Cluster"
start the cluster:
cqlsh> UPDATE system.local SET cluster_name = 'Cassendra Cluster' 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: 'Cassendra Cluster'
Start the cluster:
$sudo service dse start;sudo service datastax-agent start
Check Installation log:
$ cat /var/log/cassandra/output.log

Answer 4

For Cassandra 3.0.5, I tired the answer by Lyuben Todorov but it was missing a key part:
bash $ ./nodetool flush
should be:
bash $ ./nodetool flush system
as in here

Answer 5

For Cassandra 3.7 you should replace the ./nodetool flush with ./nodetool flush system. Otherwise it won't work.

Answer 6

If cassandra is not running, you can wipe the data folder.
rm -rf /usr/lib/cassandra/data/*
This will clear the system tables which had the wrong cluster name. \
When your restart cassandra with the correct cluster name in your cassandra.yaml everything will be regenerated and you should be good.

Answer 7

For Bitnami certified Cassandra - 3.11.5
Here's the solution that worked for me:
Stop the Cassandra service
sudo /opt/bitnami/ctlscript.sh stop cassandra
Remove the system data
sudo rm -rf /opt/bitnami/cassandra/data/data/system/*
Start the Cassandra Service
sudo /opt/bitnami/ctlscript.sh start cassandra