Adding more connectors to an existing installation allows for increased routing capacity. The new connectors will form part of the cluster and be fully aware and communicate with existing managers and datasources within the cluster.
To add more connectors to an existing deployment:
On the new host, ensure the Appendix B, Prerequisites have been followed.
Update the configuration using tpm, adding the new
host to the list of connectors
If using the staging method of deployment, you can use
+=, which appends the host to
the existing deployment as shown in the example below. Click the link to switch
between staging and ini type deployment examples.
shell> vi /etc/tungsten/tungsten.ini[alpha]
...
connectors=host4Run the tpm command to update the software with the INI-based configuration:
shell> tpm query staging
tungsten@db1:/opt/continuent/software/tungsten-clustering-7.0.3-141
shell> echo The staging DIRECTORY is `tpm query staging| cut -d: -f2`
The staging DIRECTORY is /opt/continuent/software/tungsten-clustering-7.0.3-141
shell> cd {STAGING_DIRECTORY}
shell> ./tools/tpm update --no-connectorsFor information about making updates when using an INI file, please see Section 10.4.4, “Configuration Changes with an INI file”.
Using the --no-connectors option
updates the current deployment without restarting the existing
connectors.
During a period when it is safe to restart the connectors:
shell> ./tools/tpm promote-connectorThe status of all the connectors can be monitored using cctrl:
[LOGICAL] /alpha > ls
COORDINATOR[host1:AUTOMATIC:ONLINE]
ROUTERS:
+----------------------------------------------------------------------------+
|connector@host1[8616](ONLINE, created=0, active=0) |
|connector@host2[12381](ONLINE, created=0, active=0) |
|connector@host3[19708](ONLINE, created=0, active=0) |
|connector@host4[5085](ONLINE, created=0, active=0) |
+----------------------------------------------------------------------------+