How to set up cluster groups#
Cluster members can be assigned to Cluster groups.
By default, all cluster members belong to the
To create a cluster group, use the
lxc cluster group create command.
lxc cluster group create gpu
To assign a cluster member to one or more groups, use the
lxc cluster group assign command.
This command removes the specified cluster member from all the cluster groups it currently is a member of and then adds it to the specified group or groups.
For example, to assign
server1 to only the
gpu group, use the following command:
lxc cluster group assign server1 gpu
server1 to the
gpu group and also keep it in the
default group, use the following command:
lxc cluster group assign server1 default,gpu
Launch an instance on a cluster group member#
With cluster groups, you can target an instance to run on one of the members of the cluster group, instead of targeting it to run on a specific member.
scheduler.instance must be set to either
all (the default) or
group to allow instances to be targeted to a cluster group.
See Automatic placement of instances for more information.
To launch an instance on a member of a cluster group, follow the instructions in Launch an instance on a specific cluster member, but use the group name prefixed with
@ for the
lxc launch images:ubuntu/22.04 c1 --target=@gpu