docker 部署mysql详细过程(docker部署常见应用)

docker mysql sql
这篇文章主要介绍了docker 部署mysql之docker部署常见应用,本文以docker部署mysql5.7.26为例,通过实例代码给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,需要的朋友可以参考下

之前给大家介绍过:docker(部署常见应用):docker部署nginx

docker部署mysql:5.7.26

# 下载镜像
docker pull mysql:5.7.26

# 查看镜像
docker images|grep mysql

# 启动容器镜像,建议在/usr/local/workspace/mysql  下执行以下docker  run  命令
  docker run -p 13306:3306 --name my-mysql -v $PWD/conf:/etc/mysql -v $PWD/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7.26
 
  # 建议写死路径
  docker run -p 13306:3306 --name my-mysql -v /usr/local/workspace/mysql/conf:/etc/mysql -v /usr/local/workspace/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7.26

命令说明:

-p 13306:3306             将容器的 3306 端口映射到主机的 3306 端口

--name my-mysql            启动后容器名为my-mysql

-v $PWD/conf:/etc/mysql          将主机当前目录下的 conf/ 挂载到容器的 /etc/mysql (conf目录为mysql的配置文件,不挂载也没问题)

-v $PWD/logs:/logs               将主机当前目录下的 logs 目录挂载到容器的 /logs (logs目录为mysql的日志目录,不挂载也没影响)

-v $PWD/data:/var/lib/mysql           将主机当前目录下的data目录挂载到容器的 /var/lib/mysql (data目录为mysql配置的数据文件存放路径,这个还是建议挂载,是存储数据的,容器down掉,还能再次挂载数据。)

-e MYSQL_ROOT_PASSWORD=123456     初始化 root 用户的密码

查看容器启动情况

[xxx@xxx-xx-xxx  mysql]# docker ps|grep mysql
5291ed3fe987        mysql:5.7.26                                        "docker-entrypoint.s??   5 minutes ago       Up 5 minutes        33060/tcp, 0.0.0.0:13306->3306/tcp   my-mysql

进入mysql容器

# 登录容器[root@cbov10-sso55-xxx ~]# docker exec -it my-mysql bash
root@5291ed3fe987:/# ls
bin   dev              entrypoint.sh  home  lib64  media  opt   root  sbin  sys  usr
boot  docker-entrypoint-initdb.d  etc         lib   logs   mnt    proc  run     srv   tmp  var
# 登录mysqlroot@5291ed3fe987:/# mysql -uroot -p --default-character-set=utf8
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.26 MySQL Community Server (GPL)

Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)

设置能远程登录mysql

mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> select host,user from user;
+-----------+---------------+
| host      | user          |
+-----------+---------------+
| %         | root          |
| localhost | mysql.session |
| localhost | mysql.sys     |
| localhost | root          |
| localhost | test          |
+-----------+---------------+
5 rows in set (0.00 sec)

# 设置root用户在任何地方进行远程登录,并具有所有库任何操作权限,(公司绝对不能这么做,暴露的攻击面太大),这里只是做测试。
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.00 sec)

# 刷新权限
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

# 退出mysql 
mysql> exit
Bye

关于mysql授权,各位可自行百度,这里推荐

mysql之权限管理

Mysql权限控制

远程登录测试

使用数据库连接工具连接 宿主机ip+宿主机暴露的端口。

前面我们启动容器的时候-p13306:3306 标识宿主机端口 13306 映射 到容器的 3306 ,假如我们宿主机,就是服务器的ip地址为10.10.10.11

应该连接 10.10.10.11:13306 连接的数据库这里推荐新建test 数据库 做测试,如下

docker ,mysql重启问题(数据会不会丢失?)

# 查看容器
[root@cbov10-sso55-113 mysql]# docker ps|grep mysql
5291ed3fe987        mysql:5.7.26                                        "docker-entrypoint.s??   4 hours ago         Up 4 hours          33060/tcp, 0.0.0.0:13306->3306/tcp   my-mysql

# 停止容器 ( 5291ed3fe987 这里是mysql容器id)
[root@cbov10-sso55-113 mysql]# docker stop 5291ed3fe987
5291ed3fe987


# 删除容器
[root@cbov10-sso55-113 mysql]# docker rm 5291ed3fe987
5291ed3fe987

去我们原先挂载目录下查看

挂载宿主机目录是 /usr/local/workspace/mysql,

[root@cbov10-sso55-xxx mysql]# cd data/
[root@cbov10-sso55-xxx data]# ls
auto.cnf    ca.pem           client-key.pem  ibdata1      ib_logfile1  performance_schema  public_key.pem   server-key.pem  test
ca-key.pem  client-cert.pem  ib_buffer_pool  ib_logfile0  mysql        private_key.pem     server-cert.pem  sys

数据文件还在!我们再重新执行

# 这里要注意和挂载的宿主机目录一定要一致,第一次在 /usr/local/workspace/mysql 下执行的命令,这次也应该在同目录

# 当然,写成固定路径就没有上面的问题

[root@cbov10-sso55-xxx mysql]#   docker run -p 13306:3306 --name my-mysql -v $PWD/conf:/etc/mysql/conf.d -v $PWD/logs:/logs -v $PWD/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7.26
74c91431533ebb9bbfd3a1123b3f910f54770a08ad08c3c37cbbb996d29e0428

# 这里可以看出容器id已经发生了变化
[root@cbov10-sso55-xxx mysql]# docker ps |grep mysql
74c91431533e        mysql:5.7.26                                        "docker-entrypoint.s??   16 seconds ago      Up 15 seconds       33060/tcp, 0.0.0.0:13306->3306/tcp   my-mysql

# 进入容器
[root@cbov10-sso55-xxx mysql]# docker exec -it bash 74c91431533e
Error: No such container: bash
[root@cbov10-sso55-xxx mysql]# docker exec -it  74c91431533e bash
root@74c91431533e:/# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.26 MySQL Community Server (GPL)

Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.


mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| test               |
+--------------------+
5 rows in set (0.00 sec)

发现建的test数据库也在!mysql容器删除前后,data文件大小也可以验证,读者壳自行尝试。

宿主机文件保存好的话,数据可以不丢失。

说明:

其实 生产比做的这个测试要复杂的多,mysql集群,主备,数据同步,网络 等等问题,用docker解决确实为难

mysql 容器 的管理或者说,有状态应用的管理还得一个比较流弊的东西,这个项目是 大名鼎鼎的kubernetes。

推荐

docker官网

kubernetes官网