You can enable maintenance mode immediately or schedule it using the Management Console's GUI or API. If you choose to schedule maintenance mode, this will be communicated to users by a banner at the top of every page.
Via the GUI
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Open the Management Console in your web browser.
http(s)://hostname/setup
In the navigation bar at the top of the page, click Maintenance.
Under "Enable and schedule," choose when you would like to enable maintenance mode: now, in 30 minutes, in 1 hour, or in 2 hours. For more fine-grained control, use the API.
Select Enable maintenance mode.
Via the API
Send a POST request to your appliance's /setup/api/maintenance endpoint, providing a JSON string (maintenance) with the enabled attribute set to true and the when attribute set to a date parseable by mojombo/chronic. For example, to enable maintenance mode on Friday at 5:00 p.m.:
curl -X POST 'http://hostname/setup/api/maintenance?license_md5=md5-checksum-of-license' -d 'maintenance={"enabled":true, "when":"this friday 17:00"}'
For more details, see the Maintenance Status section of "Management Console API."
