docker快速搭建mysql容器定时备份数据到磁盘

step 1 创建dockfile

localhost:5.7.17 jack$ vi Dockerfile

FROM mysql:5.7.17
MAINTAINER Jack.he
ENV TZ="Asia/Shanghai" LANG=zh_CN.UTF-8
RUN cp /usr/share/zoneinfo/$TZ /etc/localtime && apt-get update && apt-get install -y vim && apt-get install -y cron

step 2 创建image并推送到私服

docker build -t 10.10.101.199:5000/ab-mysql-backup:5.7.17 .
docker push 10.10.101.199:5000/ab-mysql-backup:5.7.17

step 3 创建启动脚本run.sh

$ mkdir -p /export/mysql/mysqlbackup/script/sql
vi /export/mysql/mysqlbackup/run.sh
#!/bin/bash
echo "================start docker container...==============="
docker run -d --restart=always --name mysqlbackup \
                                -e MYSQL_ROOT_PASSWORD=12345678 \
                -v /etc/localtime:/etc/localtime:ro \
                                -v /export/mysql/mysqlbackup/script:/root \
                10.10.101.199:5000/ab-mysql-backup:5.7.17
echo "===============docker container started.==============="

step 4 创建数据库备份脚本backup.sh

vi /export/mysql/mysqlbackup/script/backup.sh
#!/bin/bash
source /etc/profile
echo "......begin backup databases......"
currentTime=`date "+%Y%m%d%H%M%S"`
echo 'current time = '$currentTime

#192.168.2.22 为需要备份服务器ip以及mysql用户名和密码
/usr/bin/mysqldump -h192.168.2.22 -uroot -p12345678 testdb  > /root/sql/testdb_$currentTime.sql

echo "backup databases end !!!"

step 5 启动容器并创建crontab任务

[www@cent7-ip199 mysqlbackup]$sh /export/mysql/mysqlbackup/run.sh
[www@cent7-ip199 mysqlbackup]$ docker exec -it mysqlbackup bash
root@f1ae964e9f21:/# crontab -l
*/1 * * * * sh /root/backup.sh
root@f1ae964e9f21:/#service cron start #启动定时任务