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Linux系统下mysql用shell脚本做备份

作者:  时间: 2010-12-25
对于linux系统下的mysql DB的数据备份,以下两种方法,第一种方法是只备份数据,将数据保存在文本文件中;第二种方法是将整个DB备份,生成SQL文件,在DB恢复时较方便,当然,如果需要,也可以对个别表进行备份。

方法一:

#!/bin/bash

#DB服务器IP
DB_HOST="127.0.0.1"
#database name
DB_NAME="mysql"
#database username
DB_USER="USER"
#database password
DB_PASS="password"
#需要备份的表名
TBL_NAME_1=user
#需要备份的表名
TBL_NAME_2=db
#当前日期时间字符串 例:2010-12-20-10-12-30 (年月日时分秒)
DATE=`date +%Y-%m-%d-%H-%M-%S`
#执行mysql命令的参数
SQL_OPT="-u$DB_USER -p$DB_PASS -h $DB_HOST $DB_NAME"

/usr/bin/mysql $SQL_OPT << EOF
#将单个表的数据导出到文件中,
#FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n' 这些选项是把数据用逗号分隔,双引号引起来,换行用\n;如果不用,可以将这些选项删除。
select * from $TBL_NAME_1 into outfile "/tmp/bakfile/$TBL_NAME_1.$DATE.txt" FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n';
select * from $TBL_NAME_2 into outfile "/tmp/bakfile/$TBL_NAME_2.$DATE.txt" FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n';

quit
EOF

echo 'Backup success'


方法二:

#!/bin/bash


#DB服务器IP
DB_HOST="127.0.0.1"
#database name
DB_NAME="mysql"
#database username
DB_USER="
USER"
#database password
DB_PASS="
password"
#当前日期时间字符串 例:2010-12-20-10-12-30 (年月日时分秒)
DATE=`date +%Y-%m-%d-%H-%M-%S`
#bakup file absolute path
BAKUP_FILE=/tmp/bakfile/$DB_NAME-$DATE.sql

#执行mysqldump命令的参数
SQL_OPT="-u$DB_USER -p$DB_PASS -h $DB_HOST $DB_NAME"

#执行备份,整个DB所有表的备份,SQL语句的形式
/usr/bin/mysqldump --opt $SQL_OPT > $BAKUP_FILE

echo 'Backup success。'