升级mariadb至最新版本
https://download.csdn.net/download/weixin_47297088/19149966
mysqldump -u root -p'' --all-database > fulldatabase.sql mv /etc/my.cnf /etc/my.cnf.bak
tar -xf mariadb-10.5.10-rhel-7-x86_64-rpms.tar cd mariadb-10.5.10-rhel-7-x86_64-rpms/ yum -y install *.rpm
systemctl start mariadb
mysql_upgrade -uroot -p --force
systemctl enable mariadb
至此完成升级