Docker安装MySql-挂载外部数据和配置

环境

---

• CentOS：7
• Docker：1.31.1
• MySql：5.7

 

拷贝mysql配置文件

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1.首先创建mysql容器

sudo docker run --name mysql5. -p : -e MYSQL\_ROOT\_PASSWORD= -d mysql:5.7

 

2.创建成功，查看一下运行状态

[root@localhost ~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                               NAMES
c84a366e3abf        mysql:5.7           "docker-entrypoint..."    minutes ago       Up  seconds       /tcp, 0.0.0.0:->/tcp   mysql5.

 

3.可以看到我们的容器正在运行中，现在进入容器，查看一下配置文件

[root@localhost ~]# docker exec -it mysql5. /bin/bash
root@c84a366e3abf:/# cat /etc/mysql/my.cnf
# Copyright (c) , Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version  of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc.,  Franklin St, Fifth Floor, Boston, MA  - USA

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/
root@c84a366e3abf:/# cat /etc/mysql/mysql.conf.d/mysqld.cnf
# Copyright (c) , , Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version  of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc.,  Franklin St, Fifth Floor, Boston, MA  - USA

#
# The MySQL  Server configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

[mysqld]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
datadir         = /var/lib/mysql
lower_case_table_names=
#log-error      = /var/log/mysql/error.log
# By default we only accept connections from localhost
#bind-address   = 127.0.0.1
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=

 

4.把输出的内容复制一下，我们在本地先建一个同名文件，把内容粘贴进去，此时也可以修改添加自己想要的配置，例如加上忽略表名大小写的配置：lower_case_table_names=1。

 

5.把这个文件保存一下，然后切换到命令行，输入exit退出容器。

 

6.下一步停止并删除mysql5.7容器，后面挂载了外部数据的时候重新创建。

[root@localhost ~]# docker stop mysql5.
[root@localhost ~]# docker rm mysql5.

 

数据和配置挂载到宿主机

---

1.在linux环境下创建挂载目录，把前面拷出来的配置复制到下面创建的mysqld.cnf中

[root@localhost ~]# cd /opt
[root@localhost ~]# mkdir mysql
[root@localhost ~]# cd mysql
[root@localhost ~]# mkdir data
[root@localhost ~]# mkdir config
[root@localhost ~]# cd config
[root@localhost ~]# touch mysqld.cnf

 

2.mysqld.cnf的配置内容如下

[mysqld]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
datadir         = /var/lib/mysql
lower_case_table_names=
#log-error      = /var/log/mysql/error.log
# By default we only accept connections from localhost
#bind-address   = 127.0.0.1
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=

 

3.执行下面的命令创建容器

sudo docker run --name mysql5. --restart always --privileged=true -p : -v /opt/mysql/config/mysqld.cnf:/etc/mysql/mysql.conf.d/mysqld.cnf -v /opt/mysql/data:/var/lib/mysql -e MYSQL_USER="fengwei" -e MYSQL_PASSWORD="pwd123" -e MYSQL_ROOT_PASSWORD="rootpwd123" -d mysql:5.7

参数说明：

–restart always：开机启动
–privileged=true：提升容器内权限
-v /opt/mysql/config/mysqld.cnf:/etc/mysql/mysql.conf.d/mysqld.cnf：映射配置文件
-v /opt/mysql/data:/var/lib/mysql：映射数据目录
-e MYSQL_USER=”fengwei”：添加用户fengwei
-e MYSQL_PASSWORD=”pwd123”：设置fengwei的密码伟pwd123
-e MYSQL_ROOT_PASSWORD=”rootpwd123”：设置root的密码伟rootpwd123

特别说明：如果没有添加--privileged=true参数，容器创建后不能正常启动，查看日志发现有权限的错误。

 

参考：http://www.fwhyy.com/2018/05/docker-installs-mysql-to-mount-external-data-and-configuration/