# Percona Xtrabackup have some issue with percona mysql 8.0?

**URL:** <https://forums.percona.com/t/percona-xtrabackup-have-some-issue-with-percona-mysql-8-0/8349>\
**Category:** Percona XtraBackup\
**Tags:** mysql\
**Created:** [December 4, 2020, 5:12pm UTC](https://forums.percona.com/t/percona-xtrabackup-have-some-issue-with-percona-mysql-8-0/8349 "2020-12-04T17:12:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lokesh123](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/lokesh123/32/5519_2.png) [@lokesh123](https://forums.percona.com/u/lokesh123)\
**Post date:** [December 4, 2020, 5:12pm UTC](https://forums.percona.com/t/percona-xtrabackup-have-some-issue-with-percona-mysql-8-0/8349/1 "2020-12-04T17:12:55Z")

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**Mysql:** mysql Ver 8.0.21-12 for Linux on x86\_64 (Percona Server (GPL), Release ‘12’, Revision ‘7ddfdfe’)

**Xtarbackup:** xtrabackup version 2.4.9 based on MySQL server 5.7.13 Linux (x86\_64) (revision id: a467167cdd4)

_xtrabackup --backup --user=root–password=‘root’ --no-version-check --target-dir=/home/mysqlbkp_

201204 17:38:03 Connecting to MySQL server host: localhost, user: root, password: set, port: not set, socket: not set

Failed to connect to MySQL server: Authentication plugin ‘caching\_sha2\_password’ cannot be loaded: /usr/lib/plugin/caching\_sha2\_password.so: cannot open shared object file: No such file or directory.

_mysql -u root -proot_ … is working well.

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**Author:** ![Marcelo\_Altmann](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/marcelo_altmann/32/11299_2.png) [@Marcelo\_Altmann](https://forums.percona.com/u/Marcelo_Altmann)\
**Post date:** [December 4, 2020, 6:50pm UTC](https://forums.percona.com/t/percona-xtrabackup-have-some-issue-with-percona-mysql-8-0/8349/2 "2020-12-04T18:50:20Z")

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Hi,

Your issue is because you are using xtrabackup 2.4 to backup an 8.0 server. Please use xtrabackup version 8 and you will be fine.