There are really three different ways to remove an entire composite datasource (cluster) service from an existing composite cluster, (CAP, DAA or CAA):
Using command tools/tpm update --replace-release
Using command tpm delete-service
Manually using individual commands for each required step
See Section 4.4.2.3, “Removing a Composite Datasource/Cluster from an Existing Deployment Manually”
Internal Operations Reference
For Reference Only
Below are the internal operations taken during the script processing, presented for clarity.
Do NOT perform any step below by hand.
For CAP, tpm update and tpm delete-service both run the Manager Cleanup Steps on each node
For CAA, tpm update and tpm delete-service both run the Manager Cleanup Steps and the Replicator Cleanup Steps on each node
Manager Cleanup Steps
Manager Cleanup Steps performed on a node in a service not being deleted
Delete the dataservice from the Manager layer using cctrl
Remove the matching service line from
cluster-home/conf/dataservices.properties
Manager Cleanup Steps performed on a node in service to be removed
Stop all Tungsten services
Run the tpm uninstall command
Replicator Cleanup Steps
Replicator Cleanup Steps performed on a node in a service not being deleted
Offline all Tungsten Replicator services
Remove the two
tungsten/tungsten-replicator/conf/static-*_from_{service}.properties*
files
Restart the Tungsten Replicator process
Online all Tungsten Replicator services
Delete the service-specific thl and relay subdirs
Replicator Cleanup Steps performed on a node in service to be removed
Offline all Tungsten Replicator services
Remove the two
tungsten/tungsten-replicator/conf/static-*_from_{service}.properties*
files
To remove an entire composite datasource (cluster) from an existing deployment using the tpm update command, you must perform the following steps on every node in the composite cluster, including the ones to be removed.
Edit the tungsten.ini file on every node in the
composite cluster you are keeping
Delete the entire stanza for the cluster service you wish to remove
Delete the cluster name from the composite service definition
Save and exit the tungsten.ini file
Execute the ./tools/tpm update --replace-release command from the staging directory.
For more information about running tpm update, please see Section 10.2.4, “Configuration Changes with an INI file”.
Once the procedure is complete on all nodes, the service will no longer be visible in cctrl.
To remove an entire composite datasource (cluster) from an existing deployment using the tpm delete-service command, you must perform the following steps on every node in the composite cluster, including the ones to be removed.
Execute the tpm delete-service {service_name_here} command
During the execution of the tpm command on every node in the
composite cluster that you are
keeping, you will be prompted to edit the
tungsten.ini file
This step will not be called if the node is due to be de-commissioned (i.e. the service has been deleted).
Delete the entire stanza for the cluster service you wish to remove
Delete the cluster name from the composite service definition
Save and exit the tungsten.ini file
tpm will complete the service deletion based on your edits. Once this is done on all of the nodes, the service will be gone from cctrl.