使用Docker安裝Mysql


最近使用阿里雲服務器,學習一下Docker,今天學着使用Docker安裝MySQL。

首先,從阿里雲的Docker Hub 上pull一個MySQL的image.

[centos@loovelj~]$ docker pull registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql:5.7
5.7: Pulling from acs-sample/mysql
d4bce7fd68df: Pull complete
a3ed95caeb02: Pull complete
01588229585e: Pull complete
ada32b818a1a: Pull complete
ac7528e308ac: Pull complete
44e3fb8779c7: Pull complete
bfcca86efc6a: Pull complete
32da415dff2e: Pull complete
aae6d9712a36: Pull complete
3148136ce9cc: Pull complete
Digest: sha256:32ff2f404c3bd199aaec2e6d19d91d59673e40d7394732124f91dd72a2e1ed97
Status: Downloaded newer image
for registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql:5.7

查看下載鏡像,就會看到已經有了

[centos@loovelj~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test
/ubuntu v1.0 523e7db0e264 11 minutes ago 98.3MB
ubuntu latest dd6f76d9cc90
7 days ago 122MB
hello
-world latest 725dcfab7d63 8 days ago 1.84kB
registry.cn
-hangzhou.aliyuncs.com/acs-sample/mysql 5.7 ec7e75e5260c 23 months ago 360MB

 

名字太長,修改為短的tag

[centos@loovelj~]$ docker tag registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql:5.7 mysql:5.7 
[centos@loovelj
~
]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test
/ubuntu v1.0 523e7db0e264 12 minutes ago 98.3MB
ubuntu latest dd6f76d9cc90
7 days ago 122MB
hello
-world latest 725dcfab7d63 8 days ago 1.84kB
mysql
5.7 ec7e75e5260c 23 months ago 360MB
registry.cn
-hangzhou.aliyuncs.com/acs-sample/mysql 5.7 ec7e75e5260c 23 months ago 360MB

 

根據鏡像創建容器

[centos@loovelj~]$ docker create -it mysql:5.7
62c975b37ad25b03914eb61e05088019f37ff9cb049a682ac02f20fac1761a4d

 

啟動MySQL容器

[centos@loovelj~]$ docker run --name mysqlserver -e MYSQL_ROOT_PASSWORD=sgcc -d -i -p 3306:3306  mysql:5.7
2a7a85124400be6fd47e0d97cf5d602456b1db1a11c6331747fe662481eea537
[centos@loovelj
~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2a7a85124400 mysql:
5.7 "/entrypoint.sh my..." 9 seconds ago Up 8 seconds 0.0.0.0:3306->3306/tcp mysqlserver
188099665d1e ubuntu:latest
"/bin/bash" 23 hours ago Up 23 hours angry_spence

 

進入MySQL終端

[centos@liujun ~]$ docker exec -it  2a7a85124400  /bin/bash
root@2a7a85124400:
/# mysql -h 127.0.0.1 -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection
id is 2
Server version:
5.7.9 MySQL Community Server (GPL)

Copyright (c)
2000, 2015, 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
>

3.訪問Mysql數據庫
由於我們在上面使用了-p參數映射了容器的3306端口到宿主機的3306端口,此時我們可以直接訪問宿主機的3306端口來訪問Docker中的mysql服務
mysql -h 127.0.0.1 -u root -p 

 

其中,mysql 報錯,我就在本機重新安裝mysql,參照阿里雲教程。

但是啟動mysql時報錯 

[root@loovelj support-files]# /etc/init.d/mysqld start
Starting MySQL...The server quit without updating PID
file [FAILED]cal/mysql/data/liujun.pid).

經過查詢,發現已經有一個運行的mysql。關閉后再重啟

[root@liujun support-files]# ps -ef|grep mysqld
root
10803 9758 0 13:26 pts/0 00:00:00 grep --color=auto mysqld
[root@liujun support
-files]# kill -9 10803
bash:
kill: (10803) - No such process
[root@liujun support
-files]# kill -9 9758
Killed
[root@liujun mysql]#
/etc/init.d/mysqld start
Starting MySQL.

 

再執行mysql時,發現還是報錯,查詢原因是啟動項不在/usr/bin下面。

ln -s /usr/local/mysql/bin/mysql /usr/bin 做個鏈接即可

 后來發現環境變量修改了,但是好像沒有保存好,mysqladmin 命令還是不能用,所以又重新保存環境變量

[centos@liujun ~]$ vim ~/.bash_profile

#PATH
=$PATH:$HOME/bin:/usr/local/apache/bin
#添加以下列
PATH=$PATH:$HOME/bin:/usr/local/mysql/bin:/usr/local/mysql/lib#:wq 保存退出
[centos@liujun
~]$ source ~/.bash_profile

再次運行(第二天再次嘗試的,上次的容器已經退出了)docker run

[centos@liujun ~]$ docker run --name mysqlserver -e MYSQL_ROOT_PASSWORD=sgcc -d -i -p 3306:3306  mysql:5.7
0cc2009d1d367903a0d4e47a6e69af1bc41e409e194a231b6dd1193cc27bf716
docker: Error response from daemon: driver failed programming external connectivity on endpoint mysqlserver (4e7ecdbc87918be626ac8920214ed76386784c83b572f5cd5d3ff0d46d453bb6): Error starting userland proxy: listen tcp
0.0.0.0:3306: bind: address already in use.

 

發現已經存在這個容器,只好刪除了重新建立容器

 


[centos@liujun ~]$ docker rm mysqlservermysqlserver
[centos@liujun
~]$ docker run --name mysqlserver -e MYSQL_ROOT_PASSWORD=sgcc -d -i -p 3306:3306 mysql:5.7
9455dbd9c9128e51eee84c29d356fb5dff8d31762179ec2585c563ead08ad413

 

按照教程,通過mysql 遠程連接就好了,但是說端口已經占有,估計是自己的mysql打開了,關閉本機的mysql

[centos@liujun ~]$ docker run --name mysqlserver -e MYSQL_ROOT_PASSWORD=sgcc -d -i -p 3306:3306  mysql:5.7
0cc2009d1d367903a0d4e47a6e69af1bc41e409e194a231b6dd1193cc27bf716
docker: Error response from daemon: driver failed programming external connectivity on endpoint mysqlserver
(4e7ecdbc87918be626ac8920214ed76386784c83b572f5cd5d3ff0d46d453bb6): Error starting userland proxy: listen tcp
0.0.0.0:3306: bind: address already in use.

 

[centos@liujun ~]$ sudo /etc/init.d/mysql stop
[
sudo] password for centos:
sudo: /etc/init.d/mysql: command not found
[centos@liujun
~]$ sudo /etc/init.d/mysqld stop
Shutting down MySQL.. [ OK ]

 

最后再執行連接

[centos@liujun ~]$ mysql -h 127.0.0.1 -u root -p 
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection
id is 3
Server version:
5.7.9 MySQL Community Server (GPL)

Copyright (c)
2000, 2016, 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
>

成功!

 

 

 

 

 

 

參考:

http://blog.sina.com.cn/s/blog_7f2ac7b70102vpyl.html

http://www.cnblogs.com/xiohao/p/5377609.html

https://help.aliyun.com/document_detail/50774.html

關於IP的設置

https://severalnines.com/blog/mysql-docker-containers-understanding-basics

 


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