As documented in the preceding sections, using the pcs resource create command will create the group specified with the --group option if it does not already exist. A second way of creating a resource group is by using the pcs resource group add command, as shown in the following example:

sudo pcs resource group add mygroup MyVirtualIP MyApacheWebsite

The preceding command creates group mygroup If it does not already exist, and adds existing resources MyVirtualIP and MyApacheWebsite to the group. If the resources specified in the command are in another group, they will be moved to the new group mygroup.

You can also use options --before or --after with the pcs resource group add command to specify the position of the resource being created relative to a resource that already exists in the group.

See pcs(8) and https://clusterlabs.org/ for more information on configuring resources and resource groups.