After installing percona server so many times without issue it seems I've hit a unique one.
# yum list installed | grep -i perc
percona-release.noarch 0.1-10 @percona-release-noarch
As you can see I only have the repo installed. When I go to install PXC5.7, I get this:
# yum install Percona-XtraDB-Cluster-server-57
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.atlanticmetro.net
* epel: fedora-epel.mirrors.tds.net
* extras: mirror.atlanticmetro.net
* updates: mirror.atlanticmetro.net
percona-release-sources | 2.9 kB 00:00:00
percona-release-sources/7/primary_db | 82 kB 00:00:00
Resolving Dependencies
--> Running transaction check
---> Package Percona-XtraDB-Cluster-server-57.x86_64 0:5.7.23-31.31.2.el7 will be installed
--> Processing Dependency: Percona-XtraDB-Cluster-client-57 = 5.7.23-31.31.2.el7 for package: Percona-XtraDB-Cluster-server-57-5.7.23-31.31.2.el7.x86_64
--> Processing Dependency: Percona-XtraDB-Cluster-shared-57 = 5.7.23-31.31.2.el7 for package: Percona-XtraDB-Cluster-server-57-5.7.23-31.31.2.el7.x86_64
--> Processing Dependency: percona-xtrabackup-24 >= 2.4.12 for package: Percona-XtraDB-Cluster-server-57-5.7.23-31.31.2.el7.x86_64
--> Processing Dependency: perl-DBD-MySQL for package: Percona-XtraDB-Cluster-server-57-5.7.23-31.31.2.el7.x86_64
--> Processing Dependency: qpress for package: Percona-XtraDB-Cluster-server-57-5.7.23-31.31.2.el7.x86_64
--> Running transaction check
---> Package Percona-XtraDB-Cluster-client-57.x86_64 0:5.7.23-31.31.2.el7 will be installed
---> Package Percona-XtraDB-Cluster-shared-57.x86_64 0:5.7.23-31.31.2.el7 will be installed
---> Package percona-xtrabackup-24.x86_64 0:2.4.12-1.el7 will be installed
---> Package perl-DBD-MySQL.x86_64 0:4.023-6.el7 will be installed
--> Processing Dependency: libmysqlclient.so.18(libmysqlclient_18)(64bit) for package: perl-DBD-MySQL-4.023-6.el7.x86_64
--> Processing Dependency: libmysqlclient.so.18()(64bit) for package: perl-DBD-MySQL-4.023-6.el7.x86_64
---> Package qpress.x86_64 0:11-1.el7 will be installed
--> Running transaction check
---> Package Percona-Server-shared-56.x86_64 0:5.6.42-rel84.2.el7 will be installed
--> Processing Conflict: Percona-XtraDB-Cluster-shared-57-5.7.23-31.31.2.el7.x86_64 conflicts Percona-Server-shared-56
--> Finished Dependency Resolution
Error: Percona-XtraDB-Cluster-shared-57 conflicts with Percona-Server-shared-56-5.6.42-rel84.2.el7.x86_64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
Running the suggested commands result in nothing. I've tried installing PXC56 and it works fine. I then yum remove those packages and try this again only to get the same exact thing. I've also tried installing the specific package it mentions in conflict with
yum install https://repo.percona.com/centos/7/RPMS/x86_64/Percona-Server-shared-56-5.6.42-rel84.2.el7.x86_64.rpm
It'll install fine, yum remove works, try to install PXC57, get the same conflict. I've even tried removing this with rpm -e and using yum-utils. I've never had this be a problem before.
UPDATE:
I've narrowed it down to perl-DBD-MySQL being the problem package.
# yum install perl-DBD-MySQL
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.atlanticmetro.net
* epel: fedora-epel.mirrors.tds.net
* extras: mirror.atlanticmetro.net
* updates: mirror.atlanticmetro.net
Resolving Dependencies
--> Running transaction check
---> Package perl-DBD-MySQL.x86_64 0:4.023-6.el7 will be installed
--> Processing Dependency: libmysqlclient.so.18(libmysqlclient_18)(64bit) for package: perl-DBD-MySQL-4.023-6.el7.x86_64
--> Processing Dependency: libmysqlclient.so.18()(64bit) for package: perl-DBD-MySQL-4.023-6.el7.x86_64
--> Running transaction check
---> Package Percona-Server-shared-56.x86_64 0:5.6.42-rel84.2.el7 will be installed
--> Processing Conflict: Percona-XtraDB-Cluster-shared-57-5.7.23-31.31.2.el7.x86_64 conflicts Percona-Server-shared-56
--> Finished Dependency Resolution
Error: Percona-XtraDB-Cluster-shared-57 conflicts with Percona-Server-shared-56-5.6.42-rel84.2.el7.x86_64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
Still don't know how to fix though
unfortunately, you have run into a known issue here, and you are right it is to do with the perl-DBD-MySQL package
You should be able to remedy this by running this
yum install perl-DBD-MySQL
After that, install the Percona repo package, and then after that you can install Percona XtraDB Cluster, Percona Server for MySQL
For more information you can find a number of reports at https://jira.percona.com ... hope this works for you!
Disclosure: I work for Percona