Showing results for 
Search instead for 
Did you mean: 
Sign up Log in

Earn badges and make progress

You're on your way to the next level! Join the Kudos program to earn points and save your progress.

Deleted user Avatar
Deleted user

Level 1: Seed

25 / 150 points

Next: Root


1 badge earned


Participate in fun challenges

Challenges come and go, but your rewards stay with you. Do more to earn more!


Gift kudos to your peers

What goes around comes around! Share the love by gifting kudos to your peers.


Rise up in the ranks

Keep earning points to reach the top of the leaderboard. It resets every quarter so you always have a chance!


Come for the products,
stay for the community

The Atlassian Community can help you and your team get more value out of Atlassian products and practices.

Atlassian Community about banner
Community Members
Community Events
Community Groups

Zero downtime upgrades for Atlassian Data Center

Tim Eddelbüttel
Rising Star
Rising Star
Rising Stars are recognized for providing high-quality answers to other users. Rising Stars receive a certificate of achievement and are on the path to becoming Community Leaders.
Oct 14, 2021

Hello everyone,

as Confluence recently get zero downtime upgrades for feature releases ( I was thinking again if I really like ZDU independent from the marketing phrases. It sound absolutly good to reduce downtime / impact for end-users specifically on large instances but on the other hand it gives you new challenges.

And the main challenge in my opinion is then consistent backups and in the worst case the restore when things go wrong.

The internal upgrade tasks itself become more stable in the past but still there is the chance that it might fail.

With Confluence 7.13 and some garbage data (Gliffy) in bandana table the upgrade task for XStream was failing and the instance stopped immediatly. So these cases still happen these days.

What we need for a consistent backup (example Confluence):

  • Database which is shared (e.g. size of 160GB)
  • Home directory (e.g. size of 10GB)
  • Shared home directory (e.g. size 800GB)

Depeding on the size backups are challenging to keep everything consitent also with incremental backups.

Putting the Confluence into read-only mode would mitigate and help to backup the data nearly consistent when everything is running but it's also an impact to end-users as they can't edit / comment anymore.

So what's you opinion on ZDU and backups?



Log in or Sign up to comment