Package cl-MariaDB105-libs conflicts with cl-MySQL80-libs

Issue

After switching from cl-MySQL to cl-MariaDB the following error appears during packages update:

Error: 
 Problem 1: package cl-MariaDB105-libs-10.5.22-3.module_el8.8.0+6713+659bc050.cloudlinux.x86_64 conflicts with cl-MySQL80-libs provided by cl-MySQL80-libs-8.0.34-1.module_el8.8.0+6687+b12e7459.cloudlinux.x86_64
  - cannot install the best update candidate for package cl-MySQL80-libs-8.0.34-1.module_el8.8.0+6687+b12e7459.cloudlinux.x86_64
  - cannot install the best update candidate for package cl-MariaDB105-libs-10.5.21-2.module_el8.8.0+6681+efa2b240.cloudlinux.x86_64
 Problem 2: problem with installed package cl-MySQL80-libs-8.0.34-1.module_el8.8.0+6687+b12e7459.cloudlinux.x86_64
  - package cl-MariaDB105-libs-10.5.22-3.module_el8.8.0+6713+659bc050.cloudlinux.x86_64 conflicts with cl-MySQL80-libs provided by cl-MySQL80-libs-8.0.34-1.module_el8.8.0+6687+b12e7459.cloudlinux.x86_64
  - package cl-MariaDB105-10.5.22-3.module_el8.8.0+6713+659bc050.cloudlinux.x86_64 requires cl-MariaDB105-libs = 10.5.22-3.module_el8.8.0+6713+659bc050.cloudlinux, but none of the providers can be installed
  - cannot install the best update candidate for package cl-MariaDB105-10.5.21-2.module_el8.8.0+6681+efa2b240.cloudlinux.x86_64
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

Environment

• CloudLinux
• cl-MariaDB 10.5

Solution

1. Ensure that  /etc/yum.repos.d/cl-mysql.repo file exists and contains the following 
   

   [cl-mysql]
   name=cl-mysql
   baseurl=https://repo.cloudlinux.com/other/cl$releasever/mysqlmeta/mysqlglobalrepo/$basearch/
   enabled=1
   gpgcheck=1
   gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CloudLinux
   
   [mysqclient]
   name=mysqlclient
   baseurl=https://repo.cloudlinux.com/other/cl$releasever/mysqlmeta/mysqlclient/$basearch/
   enabled=0
   gpgcheck=1
   gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CloudLinux

2. Install mysqlclient21 to fix dependency 
   

   # yum install mysqlclient21 --enablerepo=mysqclient

3. Remove remnants with

   # yum remove cl-MySQL80*

   Note: In given example, cl-MySQL80-libs-8.0.34-1.module_el8.8.0+6687+b12e7459 conflicting with cl-MariaDB105-libs-10.5.22-3.module_el8.8.0+6713+659bc050.cloudlinux.x86_64
   It is also better to leave mysqclient repo disabled, after installing mysqlclient21 package once. We expect that only one package set from cl-MySQL/cl-MariaDB sets will be installed.
   
   
4.  Re-run the update:

   # yum update

Cause

Packages conflict