mysql逻辑备份

一、逻辑备份

1.mysqldump

备份策略
    1.逻辑热备
    2.备份周期
          保留一周，日志保留一周，本地备份
    3.crontab

目录规划
mkdir -p /mysqldump/{log,data,bash}

备份用户

grant select on *.* to 'bkusr'@'192.168.110.%' identified by 'bkpwd';
flush privileges;

备份脚本

mkdir -p /mysqldump/{log,data,bash}
cd /mysqldump/bash
vim mysqldump.sh

#!/bin/sh
bkusr=bkusr
bkpwd=bkpwd
bkhst=`ip a|grep 'inet '|awk -F"/" '/[1][9][2][.][1][6][8]*/{print $1}'|awk '{print $2}'`
bkpt=3306
bkdir="/mysqldump/data"
mysqldump -u${bkusr} -p${bkpwd} -h${bkhst} -P${bkpt} --single-transaction --all-databases > $bkdir/all_databases_${bkhst}_${bkpt}_`date +%F`.sql

故障：

# time ./mysqldump.sh
Warning: Using a password on the command line interface can be insecure.
mysqldump: Couldn't execute 'show create table `vw_gm_stat`': SHOW VIEW command denied to user 'bkusr'@'xxx.xxx.xxx.xxx' for table 'vw_gm_stat' (1142)

权限问题，加上即可