由于mysql采用容器部署，现需要每天定时备份数据库数据
在宿主机上执行脚本

#!/bin/bash
# 设置mysql的登录用户名和密码(根据实际情况填写)
docker_name="mysql8"
mysql_user="root"
mysql_password="Mysql_root_8"
mysql_host="localhost"
mysql_port="3306"
mysql_database="ms_zabbix"
# 备份文件存放地址(根据实际情况填写)
backup_dir="/opt/data/mysql_bak/"
# 是否删除过期数据
expire_backup_delete="true"
expire_days=3
backup_time=`date +%Y%m%d%H%M`

# 备份指定数据库中数据(此处假设数据库是mysql_backup_test)
docker exec  $docker_name mysqldump -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password $mysql_database > $backup_dir/bak-$mysql_database-$backup_time.sql
 
# 删除过期数据
if [ "$expire_backup_delete" == "true" -a  "$backup_location" != "" ];then
        `find $backup_location/ -type f -mtime +$expire_days | xargs rm -rf`
        echo "Expired backup data delete complete!"
fi

#crontab配置示例
#0 0 * * * source /etc/profile && /root/pm-wuhan/mysql_bak/mysql_bak_docker.sh