Apply software updates to the DNS/DHCP Servers in an xHA pair.
BlueCat periodically releases software updates for Address Manager and DNS/DHCP Server. If a patch is available for DNS/DHCP Server, you can use Address Manager to apply the patch to the DNS/DHCP Servers in an xHA pair.
When you apply updates, Address Manager updates both the Active and Passive nodes. Address Manager first updates the Passive node, and then performs an xHA failover to change the roles of the servers. Address Manager then updates the second server.
Note: Upgrading an xHA pair might
result in errors related to Csync file synchronization as the upgrade is occurring.
These error messages don't require any action on your part, and are expected when
upgrading, as file synchronization only occurs once both nodes are at the same software
version. Since an xHA pair is upgraded one node at a time (starting with the Passive
node) Address Manager explicitly prevents data synchronization between nodes
until both nodes have been upgraded to the same software version. Once both nodes have
been upgraded, synchronization will continue as normal.
To upgrade servers in an xHA pair:
- Select the Servers tab in the sidebar, then select Servers.
- Select the checkbox for an xHA pair.
- Select .
- Add a Change control comment, if required.
- Select Upgrade.
To apply a patch to servers in an xHA pair:
- Select the Servers tab in the sidebar, then select Servers.
- Select the checkbox for an xHA pair.
- Select .
- In the Patch file field, select the previously uploaded DNS/DHCP Server patch file.
- Add a Change control comment, if required.
- Select Apply.
Once the upgrade is complete, deploy to the xHA pair to ensure the upgrade is stable
and services are functioning properly.
Note: Deployment is required after a
successful server update to ensure the correct operation of all
services.