Tungsten Clustering

Upgrading using the INI Method

To perform an upgrade of an individual node, tpm can be used on the individual host.

warning

Before performing an upgrade, please ensure that you have checked the "Installation Prerequisites", as software and system requirements may have changed between versions and releases.

important

Application traffic to the nodes will be disconnected when the connector restarts. Use the --no-connectors tpm option when you upgrade to prevent the connectors from restarting until later when you want them to.

note

For more information on performing maintenance across a cluster, see "Performing Maintenance on an Entire Dataservice"

To upgrade a single host using the tpm command:

Download the release package.

Unpack the release package:

shell> tar tungsten-clustering-8.0.4-132.tar.gz

Change to the extracted directory:
```
shell> cd tungsten-clustering-8.0.4-132
```
Execute tpm update, specifying the installation directory. This will update only this host:
```
[object Object]
```

The following additional options are available when updating, and would be recommended in production environments for hosts running connector services:

--no-connectors (optional)
By default, an update process will restart all services, including the connector. Adding this option prevents the connectors from being restarted. If this option is used, the connectors must be manually updated to the new version during a quieter period. This can be achieved by running on each host the command:
```
shell> tpm promote-connector
```
This will result in a short period of downtime (couple of seconds) only on the host concerned, while the other connectors in your configuration keep running. During the upgrade, the Connector is restarted using the updated software and/or configuration.

To update all of the nodes within a cluster, the steps above will need to be performed individually on each host.