Maintenance Windows

Owned by Andy Brook [Plugin People] (Unlicensed)
Last updated: Nov 09, 2020 by Mike Harrison
1 min read

Atlassian Cloud

Atlassian Cloud undergoes periodic maintenance, which varies by your region:

How JEMHCloud manages Atlassian Cloud maintenance

JEMHCloud validates connectivity with your server prior to retrieving messages.  Messages on your mail-server are only marked read if JEMHC completes processing.  In such cases no mail will be lost.

JEMHCloud Maintenance

We use the JEMHCloud blog to announce upcoming upgrades and the completion of them. We try to publish information about upcoming upgrades a few days prior to the weekly maintenance so that you can prepare for them if needed.

To minimize interruption, upgrades are usually planned for 12:00hrs on Sundays UTC.

About upgrades

For minor updates, we aim to have a fully automated deployment process, the flow is:

  1. Update binaries are staged

  2. External Attachments are disabled

  3. Nodes determine new binaries are available, and stop their scheduling of new jobs

  4. Nodes complete the current jobs that are running, continue to process webhooks from your hosts

  5. New nodes are launched using new binaries

  6. When we have enough healthy new nodes in our load balanced pool, we remove the older hosts and wait 30s to allow any HTTP operations to complete

  7. Old nodes are terminated, leaving the new application binaries in effect

For more complex upgrades, that involve database changes, all nodes may need to be taken down prior to the upgrade.