Enable maintenance mode

Maintenance mode lets you perform actions on hosts safely that might otherwise carry some risk.

If you want to remove the allocator role from a host, enabling maintenance mode prevents new Elasticsearch clusters and Kibana instances from being provisioned on the allocator whilst you are moving the existing nodes to another allocator or whilst you are removing the role.

To put an allocator into maintenance mode:

1. Log into the Cloud UI.
2. From the Platform menu, select Allocators.
3. Choose the allocator you want to work with, click Manage allocator then select Enable allocator maintenance. Confirm the action. Narrow the list by name, ID, or choose from several other filters. To further define the list, use a combination of filters.

After the allocator enters maintenance mode, no new Elasticsearch nodes or Kibana instances will be started on the allocator. Existing nodes will continue to work as expected. You can now safely perform actions like moving nodes off the allocator.

If you want to make the allocator fully active again, select Disable allocator maintenance. Confirm the action.

Placing a controller (also known as a "coordinator") in maintenance mode stops it from accepting new deployment configuration changes. Any deployment changes that are in progress continue processing. New deployment change requests get routed to other controllers, if available.

To put a controller into maintenance mode:

1. Log into the Cloud UI.
2. From the Platform menu, select Control Planes.
3. Locate the controller you want to manage and select Enable controller maintenance. Confirm the action.

If you want to make the controller fully active again, select Disable controller maintenance. Confirm the action.