Percona MySQL Upgrade 8.0-8.4

Databases

MySQL

MySQL Lifecycle

MySQL Upgrade

Check Current Versions

Pre-Requsites

Check Upgrade Compatibility

Upgrade

Check Upgrade

Check Current Versions

dnf list installed | grep -i percona

dnf

Pre-Requsites

Upgrade MySQL Router on all Client machines...

(if you are using it)

MySQL Router

Upgrade MySQL Shell...

dnf update percona-mysql-shell --enablerepo=Percona-84-Local

For local yum repositories hosting multiple versions of MySQL it is recommended to keep all repositories disabled and enable them specifically when required using --enablerepo

MySQL Shell Upgrade

Check Upgrade Compatibility

util.checkForServerUpgrade("root@localhost:3306", {"targetVersion":"8.4"})

Errors & Warnings

Upgrade

For InnoDB Cluster... Repeat this step for all replicas. Then change primary to one of the replicas before upgrading the previous primary

dnf upgrade percona-server-server \

percona-server-client \

percona-server-shared \

percona-icu-data-files --enablerepo=Percona-84-Local

For local yum repositories hosting multiple versions of MySQL it is recommended to keep all repositories disabled and enable them specifically when required using --enablerepo

Last metadata expiration check: 0:54:25 ago on Tue 25 Aug 2026 10:15:04 BST.Dependencies resolved.============================================================================================================================================= Package Architecture Version Repository Size=============================================================================================================================================Upgrading: percona-icu-data-files x86_64 8.4.8-8.1.el9 Percona-84-Local 2.3 M percona-server-client x86_64 8.4.8-8.1.el9 Percona-84-Local 2.9 M percona-server-server x86_64 8.4.8-8.1.el9 Percona-84-Local 67 M percona-server-shared x86_64 8.4.8-8.1.el9 Percona-84-Local 1.4 M
Transaction Summary=============================================================================================================================================Upgrade 4 Packages
Total download size: 74 MIs this ok [y/N]: yDownloading Packages:(1/4): percona-icu-data-files-8.4.8-8.1.el9.x86_64.rpm 8.4 MB/s | 2.3 MB 00:00(2/4): percona-server-shared-8.4.8-8.1.el9.x86_64.rpm 11 MB/s | 1.4 MB 00:00(3/4): percona-server-client-8.4.8-8.1.el9.x86_64.rpm 6.6 MB/s | 2.9 MB 00:00(4/4): percona-server-server-8.4.8-8.1.el9.x86_64.rpm 4.9 MB/s | 67 MB 00:13---------------------------------------------------------------------------------------------------------------------------------------------Total 5.4 MB/s | 74 MB 00:13Running transaction checkTransaction check succeeded.Running transaction testTransaction test succeeded.Running transaction  Running scriptlet: percona-server-server-8.4.8-8.1.el9.x86_64 1/1  Preparing : 1/1  Upgrading : percona-server-shared-8.4.8-8.1.el9.x86_64 1/8  Running scriptlet: percona-server-shared-8.4.8-8.1.el9.x86_64 1/8  Upgrading : percona-server-client-8.4.8-8.1.el9.x86_64 2/8  Upgrading : percona-icu-data-files-8.4.8-8.1.el9.x86_64 3/8  Running scriptlet: percona-server-server-8.4.8-8.1.el9.x86_64 4/8  Upgrading : percona-server-server-8.4.8-8.1.el9.x86_64 4/8  Running scriptlet: percona-server-server-8.4.8-8.1.el9.x86_64 4/8Percona Server is distributed with several useful UDF (User Defined Function) from Percona Toolkit.Run the following command to install these functions (fnv_64, fnv1a_64, murmur_hash):mysql -e "INSTALL COMPONENT 'file://component_percona_udf'"See http://www.percona.com/doc/percona-server/8.0/management/udf_percona_toolkit.html for more details
  Running scriptlet: percona-server-server-8.0.42-33.1.el9.x86_64 5/8  Cleanup : percona-server-server-8.0.42-33.1.el9.x86_64 5/8  Running scriptlet: percona-server-server-8.0.42-33.1.el9.x86_64 5/8  Cleanup : percona-server-client-8.0.42-33.1.el9.x86_64 6/8  Cleanup : percona-icu-data-files-8.0.42-33.1.el9.x86_64 7/8  Cleanup : percona-server-shared-8.0.42-33.1.el9.x86_64 8/8  Running scriptlet: percona-server-shared-8.0.42-33.1.el9.x86_64 8/8  Running scriptlet: percona-server-server-8.4.8-8.1.el9.x86_64 8/8  Running scriptlet: percona-server-shared-8.0.42-33.1.el9.x86_64 8/8  Verifying : percona-icu-data-files-8.4.8-8.1.el9.x86_64 1/8  Verifying : percona-icu-data-files-8.0.42-33.1.el9.x86_64 2/8  Verifying : percona-server-client-8.4.8-8.1.el9.x86_64 3/8  Verifying : percona-server-client-8.0.42-33.1.el9.x86_64 4/8  Verifying : percona-server-server-8.4.8-8.1.el9.x86_64 5/8  Verifying : percona-server-server-8.0.42-33.1.el9.x86_64 6/8  Verifying : percona-server-shared-8.4.8-8.1.el9.x86_64 7/8  Verifying : percona-server-shared-8.0.42-33.1.el9.x86_64 8/8
Upgraded:  percona-icu-data-files-8.4.8-8.1.el9.x86_64 percona-server-client-8.4.8-8.1.el9.x86_64  percona-server-server-8.4.8-8.1.el9.x86_64 percona-server-shared-8.4.8-8.1.el9.x86_64
Complete!

mysql -e "INSTALL COMPONENT 'file://component_percona_udf'" -uroot -p

Upgrade Percona Xtrabackup...

dnf install percona-xtrabackup-84 --allowerasing

Percona XtraBackup

Last metadata expiration check: 1:16:17 ago on Tue 25 Aug 2026 10:15:04 BST.Dependencies resolved.============================================================================================================================================= Package Architecture Version Repository Size=============================================================================================================================================Installing: percona-xtrabackup-84 x86_64 8.4.0-5.1.el9 Percona-84-Local 38 MRemoving dependent packages: percona-xtrabackup-80 x86_64 8.0.35-33.1.el9 @Percona-80-Local 192 M
Transaction Summary=============================================================================================================================================Install 1 PackageRemove 1 Package
Total download size: 38 MIs this ok [y/N]: yDownloading Packages:percona-xtrabackup-84-8.4.0-5.1.el9.x86_64.rpm 6.5 MB/s | 38 MB 00:05---------------------------------------------------------------------------------------------------------------------------------------------Total 6.5 MB/s | 38 MB 00:05Running transaction checkTransaction check succeeded.Running transaction testTransaction test succeeded.Running transaction Preparing : 1/1 Installing : percona-xtrabackup-84-8.4.0-5.1.el9.x86_64 1/2 Running scriptlet: percona-xtrabackup-84-8.4.0-5.1.el9.x86_64 1/2 Erasing : percona-xtrabackup-80-8.0.35-33.1.el9.x86_64 2/2 Running scriptlet: percona-xtrabackup-80-8.0.35-33.1.el9.x86_64 2/2 Verifying : percona-xtrabackup-84-8.4.0-5.1.el9.x86_64 1/2 Verifying : percona-xtrabackup-80-8.0.35-33.1.el9.x86_64 2/2
Installed: percona-xtrabackup-84-8.4.0-5.1.el9.x86_64Removed: percona-xtrabackup-80-8.0.35-33.1.el9.x86_64
Complete!

Check Upgrade

dnf list installed | grep -i percona

dnf