# Minor update xtraDB cluster 8.0.34 -\> 8.0.35

**URL:** <https://forums.percona.com/t/minor-update-xtradb-cluster-8-0-34-8-0-35/28557>\
**Category:** Percona XtraDB Cluster\
**Tags:** mysql, percona, new-release\
**Created:** [February 19, 2024, 1:10pm UTC](https://forums.percona.com/t/minor-update-xtradb-cluster-8-0-34-8-0-35/28557 "2024-02-19T13:10:45Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Aleks\_First](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/aleks_first/32/14817_2.png) [@Aleks\_First](https://forums.percona.com/u/Aleks_First)\
**Post date:** [February 19, 2024, 1:10pm UTC](https://forums.percona.com/t/minor-update-xtradb-cluster-8-0-34-8-0-35/28557/1 "2024-02-19T13:10:45Z")

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Hello Team.

We have already installed percona-xtradb-cluster.x86\_64 8.0.34  
and want to update to xtradb-cluster.x86\_64 8.0.3 **5**  
RHEL 8 OS.

To do it without losing data, we want to use next command:

> dnf update xtradb-cluster.x86\_64 8.0.34

Please say its will do update without losing data and certs wouldn’t be updated?

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<div class="post-metadata">

**Author:** ![meyerder](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/meyerder/32/16994_2.png) [@meyerder](https://forums.percona.com/u/meyerder)\
**Post date:** [February 19, 2024, 2:05pm UTC](https://forums.percona.com/t/minor-update-xtradb-cluster-8-0-34-8-0-35/28557/2 "2024-02-19T14:05:36Z")

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Should work…

Some suggestions:

- Test in a lower setup first…
- I tend to keep my certs in a different directory when setting up systems (This makes sure the upgrade does redo the certs
- Backups (and TEST THEM!!!)
- Make sure you update the Xbackup as well
- Get ready for lots of native mysql\_auth is no longer supported messages in the error logs

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<div class="post-metadata">

**Author:** ![Aleks\_First](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/aleks_first/32/14817_2.png) [@Aleks\_First](https://forums.percona.com/u/Aleks_First)\
**Post date:** [February 20, 2024, 10:44am UTC](https://forums.percona.com/t/minor-update-xtradb-cluster-8-0-34-8-0-35/28557/3 "2024-02-20T10:44:55Z")

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also one question: in our cluster we have 3 nodes: 2 with 8.0.34 and one with 8.0.35.

When we bootstrapped first 8.0.34 - node ( with 8.0.35) can join but otherwise its not working. How we can temporary disable check version of nodes in cluster?

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**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\
**Post date:** [February 21, 2024, 12:25am UTC](https://forums.percona.com/t/minor-update-xtradb-cluster-8-0-34-8-0-35/28557/4 "2024-02-21T00:25:23Z")

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> [@Aleks\_First](#):
>
> can temporary disable check version of nodes in cluster?

You can’t. Do not try to run normal operations with 2/3 as .34 and 1/3 as .35. Finish upgrading the nodes. This is called a “rolling upgrade”. Stop node1, upgrade to .35, start, let it join. Stop node2. upgrade. etc. repeat for node3.