CentOS 7 下yum安装xtrabackup备份工具

第一步：安装xtrabackup的数据库

yum install https://www.percona.com/redir/downloads/percona-release/redhat/latest/percona-release-0.1-3.noarch.rpm

第二步：找到xtrabackup相关的包文件名

　　yum list | grep xtrabackup

第三步：安装xtrabackup

　　yum -y install percona-xtrabackup.x86_64