Teamwork Cloud no longer supports Apache Cassandra 3.x, therefore before upgrading Teamwork Cloud, you need to upgrade Casandra to version 4.x (we recommend using Cassandra 4.0.3).
If you are running Cassandra in a cluster environment, upgrade it one node at a time to allow clients to access the cluster during the process.
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Before upgrading
Make sure that all the nodes are ready.
Create a snapshot of your data for backup.
Upgrade sstables by running the command nodetool upgradesstables on each node.
To upgrade Cassandra
Flush memtables to the disk by executing the following command:
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bash
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DJango
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true
nodetool drain
Shut down the 3.x node.
Backup the Cassandra configuration file at: /etc/cassandra/default.conf/cassandra.yaml
Make a note of the existing cluster name and token count with the following command:
Configure the 4.x node to point to the appropriate data files in the /etc/cassandra/default.conf/cassandra.yaml settings as shown in the example below.
Check the cluster name and token count in cassandra.yaml. If needed, replace the default values with the values set in 3.x. The example below shows the default values for a Cassandra 4.x installation.
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bash
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Example
cluster_name: 'Test Cluster'
num_tokens: 16
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Cassandra 4 Configuration
The cluster name and token count must match those values set in Cassandra 3.x.