Updating Packages on Overcloud Nodes

Updating packages on all overcloud nodes involves two steps. The first one makes sure that the overcloud plan is updated (a new tripleo-heat-templates rpm might have brought fixes/changes to the templates):

openstack overcloud deploy --update-plan-only \
--templates \
-e <full environment>

By using the parameter --update-plan-only we make sure we update only the stored overcloud plan and not the overcloud itself. Make sure you pass the exact same environment parameters that were used at deployment time.

The second step consists in updating the packages themselves on all overcloud nodes with a command similar to the following:

openstack overcloud update stack -i overcloud

This command updates the UpdateIdentifier parameter and triggers stack update operation. If this parameter is set, yum update command is executed on each node. Because running update on all nodes in parallel might be unsafe (an update of a package might involve restarting a service), the command above sets breakpoints on each overcloud node so nodes are updated one by one. When the update is finished on a node the command will prompt for removing breakpoint on next one.


Make sure you use the -i parameter, otherwise update runs on background and does not prompt for removing of breakpoints.


Multiple breakpoints can be removed by specifying list of nodes with a regular expression.


If the update command is aborted for some reason you can always continue in the process by re-running same command.


The –templates and –environment-file (-e) are now deprecated. They can still be passed to the command, but they will be silently ignored. This is due to the plan now used for deployment should only be modified via plan modification commands.