linux下mysql自动备份脚本代码-白红宇

linux下mysql自动备份脚本代码

阅读量：6689 次

发布时间：2019-06-25

本文共 2122 字，大约阅读时间需要 7 分钟。

#!/bin/sh

# mysql_backup.sh: backup mysql databases and keep newest 5 days backup.

# Last updated: 20 March 2006

# ----------------------------------------------------------------------

# This is a free shell script under GNU GPL version 2.0 or above

# Feedback/comment/suggestions : http://www.real-blog.com/

# ----------------------------------------------------------------------

# your mysql login information

# db_user is mysql username

# db_passwd is mysql password

# db_host is mysql host

# -----------------------------

db_user="root"

db_passwd="root"

db_host="localhost"

# the directory for story your backup file.

backup_dir="/home/mybackup"

# date format for backup file (dd-mm-yyyy)

time="$(date +"%d-%m-%Y")"

# mysql, mysqldump and some other bin's path

MYSQL="/usr/bin/mysql"

MYSQLDUMP="/usr/bin/mysqldump"

MKDIR="/bin/mkdir"

RM="/bin/rm"

MV="/bin/mv"

GZIP="/usr/bin/gzip"

# check the directory for store backup is writeable

test ! -w $backup_dir && echo "Error: $backup_dir is un-writeable." && exit 0

# the directory for story the newest backup

test ! -d "$backup_dir/backup.0/" && $MKDIR "$backup_dir/backup.0/"

# get all databases

all_db="$($MYSQL -u $db_user -h $db_host -p$db_passwd -Bse 'show databases')"

for db in $all_db

$MYSQLDUMP -u $db_user -h $db_host -p$db_passwd $db | $GZIP -9 > "$backup_dir/backup.0/$time.$db.gz"

done

# delete the oldest backup

test -d "$backup_dir/backup.5/" && $RM -rf "$backup_dir/backup.5"

# rotate backup directory

for int in 4 3 2 1 0

if(test -d "$backup_dir"/backup."$int")

then

next_int=`expr $int + 1`

$MV "$backup_dir"/backup."$int" "$backup_dir"/backup."$next_int"

done

exit 0;

以上备份脚本有时出现“mysqldump: Got error: 1044: Access denied for user 'root'@'localhost' to database 'information_schema' when using LOCK TABLES”问题，我的解决方案是修改mysqldump命令行（添加“--single-transaction”选项）为：$MYSQLDUMP --single-transaction -u $db_user -h $db_host -p$db_passwd $db | $GZIP -9 > "$backup_dir/backup.0/$time.$db.gz"

修改来源：http://www.cyberciti.biz/faq/linux-unix-mysqldump-got-error1044-access-denied/

转载于:https://my.oschina.net/rotiwen/blog/89823

你可能感兴趣的文章