[Internal]: Add maintenance window to the stack upgrade doc

[Leaf-Lin]

Description

Kibana maintenance windows is a great feature. It should be included whenever users run upgrade. This is relevant to both cloud/on-prem (but not serverless) upgrades to reduce noise.

Resources

https://www.elastic.co/docs/explore-analyze/alerts-cases/alerts/maintenance-windows

Which documentation set does this change impact?

Elastic On-Prem and Cloud (all)

Feature differences

• On-Prem: relevant
• Cloud Hosted: relevant
• Cloud Serverless: irrelevant

What release is this request related to?

N/A

Serverless release

N/A

Collaboration model

The documentation team

Point of contact.

Main contact: N/A

Stakeholders: N/A

[nastasha-solomon]

Great suggestion, @Leaf-Lin! Is there a particular area in the upgrade docs that you think this information is missing? Also, can you share a bit more about the driving factors behind this request? For example, did it come from conversations with folks from the field or maybe our users? Any background that you can provide would help us better understand the requested updates and their criticality.

[Leaf-Lin]

Hi,

The kibana maintenance window feature is designed to silence the alerts whenever the alerts are known to be caused by scheduled maintenance or upgrade.

The feature should be mentioned in the following document.
https://www.elastic.co/docs/deploy-manage/maintenance
https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade