MySQL--自动备份脚本

最近需要对某服务的数据库数据进行备份，因此参考网上教程完成数据库备份脚本。
因为服务的使用频率较低，因此设置定时任务，在每天定时进行备份操作。

#!/bin/bash

# 设置mysql的登录用户名和密码(根据实际情况填写)

mysql_user="root"

mysql_password="root"

mysql_host="localhost"

mysql_port="3306"

mysql_charset="utf8"

mysql_database="isajc"


# 备份文件存放地址(根据实际情况填写)

backup_dir=/home/ftpuser/MySQL_backup


# 是否删除过期数据

expire_backup_delete="ON"

expire_days=7

log_time=`date '+%Y-%m-%d %H:%M:%S'`

backup_time=`date +%Y%m%d%H%M`

welcome_msg="[${log_time}] Welcome to use MySQL backup tools!"


# 判断mysql实例是否正常运行
mysql_ps=`ps -ef |grep mysql |wc -l`

mysql_listen=`netstat -an |grep LISTEN |grep ${mysql_port}|wc -l`

if [ [${mysql_ps} == 0] -o [${mysql_listen} == 0] ]; then
echo "ERROR:MySQL is not running! backup stop!"
exit
else
echo ${welcome_msg}
fi

# 备份指定数据库
mysqldump -h${mysql_host} -P${mysql_port} -u${mysql_user} -p${mysql_password} -B ${mysql_database} > ${backup_dir}/${mysql_database}-${backup_time}.sql

flag=`echo $?`

if [ ${flag} == "0" ];then
echo "database ${mysql_database} success backup to ${backup_dir}/${mysql_database}-${backup_time}.sql"
else
echo "database ${mysql_database} backup fail!"
fi

# 删除过期数据
if [ "${expire_backup_delete}" == "ON" -a "${backup_dir}" != "" ];then
`find ${backup_dir}/ -type f -mtime +${expire_days}  -name  "*.sql"  | xargs rm -rf`
echo "Expired backup data delete complete!"
fi

 

 

以上是数据库备份脚本.

编辑定时任务:
crontab -e

# 添加定时任务(每天12:50以及23:50执行备份操作)

50 12,23 * * * cd /home/ftpuser/MySQL_backup/;sh mysql_backup.sh>>backup.log 2>&1