centos5 6下mysql資料庫定時備份

// 單個資料庫備份

[root@localhost /]# vi mysql-backup.sh

db_user="root"
db_passwd="123456"
db_host="192.168.1.110"
db_name="ecshop"
# the directory for story your backup file.
backup_dir="/backup"
# date format for backup file (dd-mm-yyyy)
time="$(date +"%y-%m-%d-%h-%m-%s")"
# mysql, mysqldump and some other bin's path
mysql="/usr/local/mysql/bin/mysql"
mysqldump="/usr/local/mysql/bin/mysqldump"
gzip="/bin/gzip"
$mysqldump -u $db_user -h $db_host -p$db_passwd $db_name | $gzip -9 > "$backup_dir/$db_name"_"$time.gz"

// 整個資料庫備份

（只保留7天以內的備份資料，不備份資料表中的information_schema 和 performance_schema）

[root@localhost /]# vi mysql-backup.sh

db_user="root"
db_passwd="123456"
db_host="localhost"
# the directory for story your backup file.
backup_dir="/backup/"
# date format for backup file (dd-mm-yyyy)
time="$(date +"%h-%m-%s-%m-%d-%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/"
echo "start to backup...";
# get all databases
# don't backup information_schema、performance_schema
all_db="$($mysql -u $db_user -h $db_host -p$db_passwd -bse 'show databases')"
all_db=$;
all_db=$;
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.7/" && $rm -rf "$backup_dir/backup.7"
# rotate backup directory
for int in 6 5 4 3 2 1 0
doif(test -d "$backup_dir"/backup."$int")
then
next_int=`expr $int + 1`
$mv "$backup_dir"/backup."$int" "$backup_dir"/backup."$next_int"
fidone
echo "backup success!"
exit 0;

執行資料庫自動備份指令碼

# chmod 700 mysql-backup.sh                   // 只允許管理員執行此指令碼

# ./mysql-backup.sh

# ls –la /mysql-backup.sh

讓備份指令碼每天自動執行

# crontab –e

# 00 03 * * * /mysql-backup.sh                  // 每天凌晨3點執行

資料庫出現問題後的恢復操作：

可以通過mysql管理工具直接將備份壓塑包裡的資料進行匯入即可

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