Expressway—This feature prevents alarm email notifications during the maintenance activity. During maintenance mode for nodes that host Expressway-based hybrid services, users are automatically reassigned to other nodes.
Video Mesh—When you place a Video Mesh node into maintenance mode, it does a graceful shutdown of calling services (stops accepting new calls and waits up to 2 hours for existing calls to complete). The purpose of the graceful shutdown of calling services is to allow reboot or shutdown of the node without causing dropped calls.
Before you begin
Maintence mode is intended solely to prepare a node for shutdown or reboot so that you can make certain networking setting changes (DNS, IP, FQDN) or prepare for hardware maintenance such as replace RAM, hard drive, and so on.
From the customer view in https://admin.webex.com, go to Services , scroll to Hybrid Services, and then click View from the On-Premises Resources card.
All of your registered on-premises resources appear as cards that contain information and settings that you can manage. You can also click Add Resource to add a new one.
(Optional) Filter the resources that display on this page (for example, click Expressway or Video Mesh, or search for a specific resource name.
From the card for the resource that you want to put in maintenance mode, click Settings , and then click Nodes .
For the node you want to do maintenance on, go to Actions, and then choose Enable maintenance mode.
After you've read and understood the prompt, click Enable.
The node goes in to a pending maintenance state. For a multi-node high availability deployment, this state makes sure that the node can be temporarily shut down in a safe manner with little or no service interruption.
After a node completes the transition into maintenance mode, it does not upgrade or implement any settings changes from the cloud.
After you check the node status page and confirm that the node moved to the Shut Down for Maintenance state, you can perform maintenance activity on the node.
What to do next
A node should be shut down within several hours after being placed into maintenance mode.
For Video Mesh, if a node is put into maintenance mode for more than 50 days, its credentials may expire and the node is then unable to authenticate to the cloud. If this condition occurs, the node is unable to return to its normal state and continues to appear as "offline" in Control Hub. To solve this condition, the node must be reset to factory defaults and registered again in Control Hub.
You must return to the actions menu and click Disable maintenance mode when you're finished with maintenance activities on the node.