xtrabackup 安装
yum install -y perl-DBI perl-DBD-MySQL perl-Time-HiRes perl-IO-Socket-SSL perl-Digest-MD5
tar -xzvf percona-xtrabackup-2.4.12-Linux-x86_64.libgcrypt145.tar.gz
mv percona-xtrabackup-2.4.12-Linux-x86_64 /usr/local/xtrabackup
chown -R mysql:mysql /usr/local/xtrabackup/
su - mysql
echo "export PATH=$PATH:$MYSQL_HOME/bin:/usr/local/xtrabackup/bin" >>/home/mysql/.bash_profile
source .bash_profile
或者
echo "export PATH=$PATH:/usr/local/xtrabackup/bin">>/etc/profile
source /etc/profile