The Ultimate Guide to High Availability with MariaDB
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MariaDB 5.5 - Centos 7 - last version not available

Hello,

I'm using MariaDB 5.5 on Centos 7.

Yum is configured to use CentOS-Base.repo but only 5.5.60 is available.

# yum list --showduplicates mariadb-server
Available Packages
mariadb-server.x86_64                                                            1:5.5.60-1.el7_5                                                             base

I don't understand why 5.5.62 is not available on the repo. Do you know the reason ?

Moreover, I tried the configuration given by https://downloads.mariadb.org/mariadb/repositories/#mirror=icm&distro=CentOS&distro_release=centos7-amd64--centos7&version=5.5 creating the file /etc/yum.repos.d/mariadb.repo

# MariaDB 5.5 CentOS repository list - created 2019-01-09 13:20 UTC
# http://downloads.mariadb.org/mariadb/repositories/
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/5.5/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1

when I installed MariaDB via yum, installation of 5.5.62 is written as completed.

However, there is no mariadb.service file under /etc/systemd/system (and subdirectories) or /usr/lib/systemd/system/

I downloaded the rpm file given by the CentOS-Base.repo and checked the content. The file mariadb.service is present. 

# rpm -qlp mariadb-server-5.5.60-1.el7_5.x86_64.rpm | grep service
/usr/lib/systemd/system/mariadb.service

I download the rpm file given by the mariadb.repo. There is no mariadb.service 

# rpm -qlp MariaDB-5.5.62-centos73-x86_64-server.rpm | grep service

The file mariadb.service is not present in the rpm of 5.5.60 from mariadb.repo

# rpm -qlp MariaDB-5.5.60-centos73-x86_64-server.rpm | grep service

Can you explain why mariadb.service is included in the rpm from CentOS-Base.repo but not from mariadb.repo dedicated to Centos 7 ?

Answer Answered by Daniel Bartholomew in this comment.

The MariaDB yum repositories are updated every time a release is made and we generally keep the most recent three versions of a given MariaDB branch in our repositories.

CentOS, and by extension RedHat, update MariaDB in their repositories according to their own schedule, which we have no control over. Because of this, the version of MariaDB 5.5 in the CentOS/RHEL base repository may be a few versions out of date compared to what you will find in the MariaDB repositories.

With a MariaDB 5.5 /etc/yum.repos.d/mariadb.repo file in place, you can see all of the MariaDB 5.5 versions currently available from both the MariaDB repositories and the CentOS base repository:

[buildbot@centos74-amd64 ~]$ sudo yum list --showduplicates mariadb-server
Available Packages
MariaDB-server.x86_64        5.5.60-1.el7.centos         mariadb
MariaDB-server.x86_64        5.5.61-1.el7.centos         mariadb
MariaDB-server.x86_64        5.5.62-1.el7.centos         mariadb
mariadb-server.x86_64        1:5.5.60-1.el7_5            base

So currently (Jan 2019) in the MariaDB 5.5 repository MariaDB 5.5.60, 5.5.61, and 5.5.62 are available; and in the CentOS base repository only MariaDB 5.5.60 is available.

As to why there is no mariadb.service file, that is because that is something CentOS/RedHat add to their mariadb-server 5.5.x packages. We only include a mariadb.service systemd file for CentOS 7 (located at /usr/lib/systemd/system/mariadb.service) for our MariaDB 10.1 and higher packages.

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