#Centos 6.6 final 安装 xtrabackup 2.2.12 小记
#（1）下载xtrabackup
wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.2.12/binary/redhat/6/x86_64/percona-xtrabackup-2.2.12-1.el6.x86_64.rpm
（2）rpm安装xtrabackup
rpm -ivh percona-xtrabackup-2.2.12-1.el6.x86_64.rpm
失败
原因：需要先安装 perl
（3）安装perl
yum -y install perl perl-devel libaio libaio-devel perl-Time-HiRes perl-dbd-mysql
失败
原因：yum perl 默认是安装 MysqL-libs-5.1.73-5.el6_6.x86_64 和当前已安装的 server 的 MysqL-server-5.6.25-1.el6.x86_64 有冲突，因此需要先安装shared版本。
（4）下载安装MysqL-shared
wget http://cdn.MysqL.com/archives/mysql-5.6/MysqL-shared-5.6.15-1.el6.x86_64.rpm
rpm -ih MysqL-shared-5.6.15-1.el6.x86_64.rpm
（5）下载安装 MysqL-shared-compat
wget http://cdn.MysqL.com/archives/mysql-5.6/MysqL-shared-compat-5.6.15-1.el6.x86_64.rpm
rpm -ih MysqL-shared-compat-5.6.15-1.el6.x86_64.rpm
（6）重新安装perl
yum -y install perl perl-devel libaio libaio-devel perl-Time-HiRes perl-dbd-mysql
成功
（7）重新安装 xtrabackup
rpm -ivh percona-xtrabackup-2.2.12-1.el6.x86_64.rpm
成功
