環境
-
CentOS：7
-
Docker：1.31.1
-
MySql：5.7
拷貝mysql配置文件
1.首先創建mysql容器
sudo docker run --name mysql5.7 -p 3306:3306 -e MYSQL\_ROOT\_PASSWORD=123456 -d mysql:5.7
2.創建成功，查看一下運行狀態
[root@localhost ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c84a366e3abf mysql:5.7 "docker-entrypoint..." 4 minutes ago Up 15 seconds 33060/tcp, 0.0.0.0:4306->3306/tcp mysql5.7
3.可以看到我們的容器正在運行中，現在進入容器，查看一下配置文件
[root@localhost ~]# docker exec -it mysql5.7 /bin/bash root@c84a366e3abf:/# cat /etc/mysql/my.cnf # Copyright (c) 2016, 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 2 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA !includedir /etc/mysql/conf.d/ !includedir /etc/mysql/mysql.conf.d/ root@c84a366e3abf:/# cat /etc/mysql/mysql.conf.d/mysqld.cnf # Copyright (c) 2014, 2016, 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 2 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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=1 #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=0
4.把輸出的內容復制一下，我們在本地先建一個同名文件，把內容粘貼進去，此時也可以修改添加自己想要的配置，例如加上忽略表名大小寫的配置：lower_case_table_names=1。
5.把這個文件保存一下，然后切換到命令行，輸入exit退出容器。
6.下一步停止並刪除mysql5.7容器，后面掛載了外部數據的時候重新創建。
[root@localhost ~]# docker stop mysql5.7 [root@localhost ~]# docker rm mysql5.7
數據和配置掛載到宿主機
1.在linux環境下創建掛載目錄，把前面拷出來的配置復制到下面創建的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的配置內容如下
[mysqld] pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock datadir = /var/lib/mysql lower_case_table_names=1 #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=0
3.執行下面的命令創建容器
sudo docker run --name mysql5.7 --restart always --privileged=true -p 4306:3306 -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
參數說明：
–restart always：開機啟動 –privileged=true：提升容器內權限 -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：映射數據目錄 -e MYSQL_USER=”fengwei”：添加用戶fengwei -e MYSQL_PASSWORD=”pwd123”：設置fengwei的密碼偉pwd123 -e MYSQL_ROOT_PASSWORD=”rootpwd123”：設置root的密碼偉rootpwd123
特別說明：如果沒有添加--privileged=true參數，容器創建后不能正常啟動，查看日志發現有權限的錯誤。