linux下mysql数据备份与自动备份实例
脚本放在 /home/user/mysql教程_backup.sh
crontab
# crontab -l
# m h dom mon dow command
28 16 * * * /home/user/mysql_backup.sh
脚本如下
#!/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
# copyright (c) 2006 sam tang
# 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="password"
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/local/mysql/bin/mysql"
mysqldump="/usr/local/mysql/bin/mysqldump"
mkdir="/bin/mkdir"
rm="/bin/rm"
mv="/bin/mv"
gzip="/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
do
$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
do
if(test -d "$backup_dir"/backup."$int")
then
next_int=`expr $int + 1`
$mv "$backup_dir"/backup."$int" "$backup_dir"/backup."$next_int"
fi
done
exit 0;
备注：
mysql是以mysql用户身份运行的,对/home /mybackup不可写也会失败
chmod 777 /home/mybackup问题解决了
看一个在lix下定时备份mysql数据库教程
添加backupmysqleveryday.sh（vi /data/shell/backupmysqleveryday.sh）
#!/bin/sh
#this shell is user for backup mysql data everyday
#author:www.ieliwb.com
#path-config
base_mysql_path=/data/webserver/mysql/
mysql_dump_path=/data/mysqlbackup/
mnt_back_path=/mnt/web/mysqlbackup/
ftp_back_path=mysql_data_backup/
#mysql-config
mysql_user=”root”
mysql_pass=”*******”
#ftp-config
ftp_host=”ip”
ftp_user=”********”
ftp_pass=”********”
backup_name=`date +%y%m%d%h%m%s`
cd ${mysql_dump_path}
#mysqldump
${base_mysql_path}bin/mysqldump -u${mysql_user} -p${mysql_pass} -all-database > ${backup_name}.sql
#pack
tar zcf ${backup_name}.tar.gz ${backup_name}.sql
rm -f ${backup_name}.sql
#backup to mnt
cp ${backup_name}.tar.gz ${mnt_back_path}${backup_name}.tar.gz
#ftp to other host
ftp -n<
open ${ftp_host}
user ${ftp_user} ${ftp_pass}
bin
prompt off
cd ${ftp_back_path}
passive
put ${backup_name}.tar.gz
close
bye
!
2.添加定时计划（vi /etc/crontab）
01 0 * * * root /data/shell/backupmysqleveryday.sh
每天0：01点执行
