1. 官网地址：https://mariadb.com/kb/en/mariadb-installation-version-10121-via-rpms-on-centos-7/

    2. 安装步骤

      1. yum install rsync nmap lsof perl-DBI nc
      2. rpm -ivh jemalloc-3.6.0-1.el7.x86_64.rpm
      3. rpm -ivh jemalloc-devel-3.6.0-1.el7.x86_64.rpm
      4. rpm -ivh MariaDB-common-10.4.8-1.el7.centos.x86_64.rpm MariaDB-compat-10.4.8-1.el7.centos.x86_64.rpm MariaDB-client-10.4.8-1.el7.centos.x86_64.rpm galera-4-26.4.2-1.rhel7.el7.centos.x86_64.rpm MariaDB-server-10.4.8-1.el7.centos.x86_64.rpm

    3. 发生错误

      warning: MariaDB-10.1.21-centos7-x86_64-common.rpm: Header V4 DSA/SHA1 Signature, key ID 1bb943db: NOKEY
error: Failed dependencies:
 mariadb-libs < 1:10.1.21-1.el7.centos conflicts with MariaDB-common-10.1.21-1.el7.centos.x86_64

    4. 解决方案

      rpm -qa | grep mariadb-libs
rpm -ev --nodeps mariadb-libs-5.5.52-1.el7.x86_64
yum install boost-devel.x86_64
rpm --import http://yum.mariadb.org/RPM-GPG-KEY-MariaDB
rpm -ivh MariaDB-common-10.4.8-1.el7.centos.x86_64.rpm MariaDB-compat-10.4.8-1.el7.centos.x86_64.rpm MariaDB-client-10.4.8-1.el7.centos.x86_64.rpm galera-4-26.4.2-1.rhel7.el7.centos.x86_64.rpm MariaDB-server-10.4.8-1.el7.centos.x86_64.rpm