# upgrade CentOS 6 to CentOS7

**URL:** <https://forums.percona.com/t/upgrade-centos-6-to-centos7/6811>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [January 23, 2019, 3:14am UTC](https://forums.percona.com/t/upgrade-centos-6-to-centos7/6811 "2019-01-23T03:14:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sklam](https://avatars.discourse-cdn.com/v4/letter/s/958977/32.png) [@sklam](https://forums.percona.com/u/sklam)\
**Post date:** [January 23, 2019, 3:14am UTC](https://forums.percona.com/t/upgrade-centos-6-to-centos7/6811/1 "2019-01-23T03:14:45Z")

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Dear al  
I have a production xtraDB cluster with version 5.5 running a pair of CentOS 6 machine. As CentOS 6 would be EOL next year,  
I would upgrade its OS to CentOS 7. However, there is no xtraDB ver5.5 RPM for CentOS 7.  
As the application server is not fully-support MySQL 5.6, I would keep running on mysql 5.5 as possible.

Anyone have similar experience/case ?

I could install el6 RPM on CentOS7. but is it stable ?

thanks

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**Author:** ![SebastianG](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/sebastiang/32/54_2.png) [@SebastianG](https://forums.percona.com/u/SebastianG)\
**Post date:** [March 13, 2019, 2:39am UTC](https://forums.percona.com/t/upgrade-centos-6-to-centos7/6811/2 "2019-03-13T02:39:14Z")

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Hi sklam,

Never tried this before to be fair, it may work or may not but being production I won’t do it.

Can you please tell us more about the app incompatibility with PXC 5.6 / 5.7?