Execute Actions

Overview

After reviewing and approving an action plan, you execute it to trigger the live migrations. Actions execute sequentially in priority order — each migration must complete before the next begins. Live migrations are non-disruptive for running instances: the workload continues serving requests while its memory state is transferred to the destination host. Plan execution can be cancelled at any time — in-progress migrations complete, pending actions are halted.

Prerequisites

An action plan in RECOMMENDED or PENDING state
All compute hosts with sufficient capacity to accept migrating instances
Shared storage (Xloud Distributed Storage) for all instances in the plan

Execute an Action Plan

Dashboard
CLI

Open the action plan

Navigate to Admin → Resource Optimizer → Action Plans and click the plan name.

Approve (if not already approved)

If the plan state is RECOMMENDED, click Approve first.

Execute

Click Execute. The plan state transitions to ONGOING.Action statuses update in real time:

Status	Meaning
`PENDING`	Action queued
`ONGOING`	Migration in progress
`SUCCEEDED`	Action completed
`FAILED`	Action failed — execution halts
`CANCELLED`	Execution cancelled before this action ran

Monitor completion

Watch the action list update as each migration completes. The plan state changes to SUCCEEDED when all actions finish.

Plan state is SUCCEEDED and all actions show SUCCEEDED.

Execute the plan

Execute action plan

watcher actionplan execute <action-plan-uuid>

Monitor plan progress

Check plan state

watcher actionplan show <action-plan-uuid> \
  -f value -c state

Watch individual actions

List action states

watcher action list \
  --action-plan <action-plan-uuid> \
  -f table -c uuid -c action_type -c state

Verify completion

Confirm all actions succeeded

watcher actionplan show <action-plan-uuid> \
  -f value -c state

Expected: SUCCEEDED

Plan state is SUCCEEDED and migrations are complete.

Verify Post-Execution Placement

After execution, verify that instances have been redistributed as expected.

Dashboard
CLI

Navigate to Admin → Compute → Hypervisors to view the updated host utilization. Compare the host instance counts and resource utilization before and after execution.

Previously underutilized hosts now show reduced instance counts.

Check hypervisor utilization

openstack hypervisor list --long

Verify instance placement

openstack server list --all \
  -f table -c ID -c Name -c Status -c "OS-EXT-SRV-ATTR:host"

Compare running_vms and memory_mb_used against pre-execution values.

Host utilization is more balanced and the active host footprint is reduced.

Cancel Execution Mid-Plan

If a plan needs to be stopped after execution has started:

Dashboard
CLI

On the action plan detail page, click Cancel. The in-progress migration completes; all pending actions are marked CANCELLED.

Cancel a running action plan

watcher actionplan cancel <action-plan-uuid>

Verify cancellation

watcher actionplan show <action-plan-uuid> \
  -f value -c state

Expected: CANCELLED

After cancellation, run a new audit to generate an updated action plan that reflects the current (partially optimized) cluster state.

Next Steps

Audit History

Review the completed audit and its execution results over time.

Action Plans

Review the action plan detail and individual action outcomes.

Troubleshooting

Resolve failed actions and migration errors.

Run an Audit

Run another audit to continue optimization after the current plan completes.

Core Services

Other Services

Execute Actions

Overview

Execute an Action Plan

Open the action plan

Approve (if not already approved)

Execute

Monitor completion

Execute the plan

Monitor plan progress

Watch individual actions

Verify completion

Verify Post-Execution Placement

Cancel Execution Mid-Plan

Next Steps

Audit History

Action Plans

Troubleshooting

Run an Audit

Core Services

Other Services

​Overview

​Execute an Action Plan

Open the action plan

Approve (if not already approved)

Execute

Monitor completion

Execute the plan

Monitor plan progress

Watch individual actions

Verify completion

​Verify Post-Execution Placement

​Cancel Execution Mid-Plan

​Next Steps

Audit History

Action Plans

Troubleshooting

Run an Audit

Overview

Execute an Action Plan

Verify Post-Execution Placement

Cancel Execution Mid-Plan

Next Steps