!/bin/bash

以下配置信息请自己修改

mysql_user=”honggv” #MySQL备份用户
#mysql_password=”Honggv_com2016” #MySQL备份用户的密码
#mysql_host=”rm-wz9t719359zhf2e9zxo.mysql.rds.aliyuncs.com”
mysql_user=”root” #MySQL备份用户
mysql_password=”123456” #MySQL备份用户的密码
mysql_host=”10.215.122.13”
mysql_port=”19366”
mysql_charset=”utf8” #MySQL编码
backup_db_arr=(“brigade_admin” “brigade_resource” “brigade_site” “brigade_user” “live_broacast”) #要备份的数据库名称，多个用空格分开隔开 如(“db1” “db2” “db3”)
#backup_db_arr=(“auc_db” “hg_im” “xueliangclouddb” “devicedb” “xueliang”) #要备份的数据库名称，多个用空格分开隔开 如(“db1” “db2” “db3”)
backup_location=/usr/local/dev/wenlv-backup #备份数据存放位置，末尾请不要带”/“,此项可以保持默认，程序会自动创建文件夹
expire_backup_delete=”ON” #是否开启过期备份删除 ON为开启 OFF为关闭
expire_days=20 #过期时间天数 默认为三天，此项只有在expire_backup_delete开启时有效

本行开始以下不需要修改

backup_time=date +%Y%m%d%H%M #定义备份详细时间
backup_Ymd=date +%Y-%m-%d #定义备份目录中的年月日时间
backup_3ago=date -d '3 days ago' +%Y-%m-%d #3天之前的日期
backup_dir=backup_location/backup_Ymd #备份文件夹全路径
welcome_msg=”Welcome to use MySQL backup tools!” #欢迎语

判断MYSQL是否启动,mysql没有启动则备份退出

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

判断有没有定义备份的数据库，如果定义则开始备份，否则退出备份

if [ “(cut -d ‘,’ -f1-5 {backup_db_arr[@]})”
for dbname in ${backup_db_arr[@]}
do
echo “database $dbname backup start…”
mkdir -p $backup_dir
mysqldump -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password $dbname --default-character-set=$mysql_charset | gzip > $backup_dir/$dbname-$backup_time.sql.gz
flag=echo $?
if [ $flag == “0” ];then
echo “database $dbname success backup to dbname-$backup_time.sql.gz”
else
echo “database $dbname backup fail!”
fi

done
else
echo “ERROR:No database to backup! backup stop”
exit
fi

如果开启了删除过期备份，则进行删除操作

if [ “expire_backup_delete” == “ON” -a “ backup_location” != “” ];then
#find $backup_location/ -type d -o -type f -ctime +$expire_days -exec rm -rf {} \;
find $backup_location/ -type d -mtime +$expire_days | xargs rm -rf
echo “Expired backup data delete complete!”
fi
echo “All database backup success! Thank you!”
exit
fi