Updating Packages on Overcloud Nodes

You can update packages on all overcloud nodes with a command similar to the following:

openstack overcloud update stack --templates [templates dir] -i overcloud -e /usr/share/openstack-tripleo-heat-templates/overcloud-resource-registry-puppet.yaml -e <all extra files>

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.

Note

When passing any extra environment files while creating the overcloud (for instance, in order to configure network isolation), pass them again here using the -e or --environment-file option to avoid making undesired changes to the overcloud.

If you use Heat templates from the default location (/usr/share/openstack-tripleo-heat-templates), it is possible that these templates have changed when updating the undercloud machine. When updating overcloud nodes, make sure you pass both the default registry file and any extra environment files.

The reason is that CLI commands, which are changing an existing overcloud, will pass new templates to Heat reusing the existing environment of the overcloud. This leads to the condition in which a new resource type referenced in updated templates might be missing in the existing environment.

Note

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

Note

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

Note

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