Assign a patch management blackout window

Apply a blackout window to prevent PE from applying patches to nodes for a specified duration of time. For example, limit applying patches during an end-of-year change freeze.

1. On the Node groups page, select the patching node group you want to assign a blackout window to.
2. On the Classes tab, under Parameter, add the blackout_windows parameter to the pe_patch class.
3. In the Value field, enter your blackout window as a JSON hash of keys and an ISO compliant timestamp.

   For example, an end of year blackout window from the beginning of the day on 15 December 2020 to the end of the day on 15 January 2021 looks like this:

   {
     "End of year change freeze": {
        "start": "2020-12-15T00:00:00+10:00",
        "end": "2021-01-15T23:59:59+10:00"
     }
   }

4. Commit changes.