3.6.3. Adding Passive Witnesses to an Existing Deployment

To add passive witness to an existing installation, use tpm to update the active configuration.

Note

Continuent recommend that active witnesses, rather than passive witnesses are used for all installations. For more information on differences, see Section 2.1, “Host Types”

shell>  ./tools/tpm update --witnesses=host4
NOTE >>Data service(s) alpha updated in /home/tungsten/tungsten-clustering-5.0.1-136/deploy.cfg
....
WARN >>host1>>This dataservice is using a passive witness. Continuent Tungsten » 
     has support for active witnesses that improve stability over passive witnesses. »
     Visit http://docs.continuent.com/ct/host-types for more information. (ManagerWitnessNeededCheck)
WARN >>host3>>This dataservice is using a passive witness. Continuent Tungsten » 
     has support for active witnesses that improve stability over passive witnesses. » 
     Visit http://docs.continuent.com/ct/host-types for more information. (ManagerWitnessNeededCheck)
WARN >>host2>>This dataservice is using a passive witness. Continuent Tungsten » 
     has support for active witnesses that improve stability over passive witnesses. » 
     Visit http://docs.continuent.com/ct/host-types for more information. (ManagerWitnessNeededCheck)

Once the update process has been completed, the current status will be displayed using cctrl. The current configuration of the cluster can be verified by using the cluster validate command within cctrl.