详解通过xtrabackup 工具备份mysql 5.7

这里不多做解释了，之前文章有介绍如何安装。 这里主要说下常见报错，比如我这里今天遇到两个：

error: Failed dependencies:
libev.so.4()(64bit) is needed by percona-xtrabackup-24-2.4.4-1.el6.x86_64
libnuma.so.1()(64bit) is needed by percona-xtrabackup-24-2.4.4-1.el6.x86_64

（1） libev.so.4()(64bit) is needed by percona-xtrabackup-24-2.4.4-1..el6.x86_64解决办法：

rpm -ivh  ftp://rpmfind.net/linux/dag/redhat/el6/en/x86_64/dag/RPMS/libev-4.15-1.el6.rf.x86_64.rpm

安装上边rpm包解决

（2）libnuma.so.1()(64bit) is needed by percona-xtrabackup-24-2.4.4-1.el6.x86_64解决办法：

rpm  -ivh  http://mirror.centos.org/centos/6/os/x86_64/Packages/numactl-2.0.9-2.el6.x86_64.rpm

安装上边rpm包解决。

这里我们写一个shell脚本做备份

#!/bin/bash
# mysql full back 
#date  2016.10.18
#author:21yunwei
 
time=`date +%F`
logfile="/data/bakup/mysql_full_bak_time.log"
fullbakup_logfile="/data/bakup/fullbakup_logfile.log"
mysql_bakdir="/data/bakup"
user=xxxxx
password=xxxxxxx
 
[ ! -d $mysql_bakdir ] && mkdir -p $mysql_bakdir
[ ! -e $logfile ] && touch $logfile
[ ! -e $fullbakup_logfile ] && touch $fullbakup_logfile
 
innobackupex --defaults-file=/etc/my.cnf --user=$user --password=$passsword--compress ${mysql_bakdir} 2>&1 >>$fullbakup_logfile
ret=$?
finishtime=`date +%Y%m%d_%H%M%S`
[ $ret -eq 0 ] && echo "Mysql fullbakup finished, time: $finishtime" >>  $logfile || echo "Mysql fullbakup failed,please check time:$finishtime" >> $logfile