【gitlab+jenkins+docker】第四节 docker版mysql安装和配置

前言

使用现成的docker容器能够快速搭建mysql服务，且管理起来很方便，具有容灾、可移植等优点，本架构需要维护一张docker容器信息表，以做到ip和port等信息的统一分发与管理

路径创建

为了避免不必要的错误，建议数据存放路径与我这里保持一致：

[root@JackRoy ~]# mkdir -p /opt/dockers/docker_db_mysql/online
[root@JackRoy ~]# mkdir -p /opt/dockers/docker_db_mysql/mysql_data/conf
[root@JackRoy ~]# vim /opt/dockers/docker_db_mysql/mysql_data/conf/my.cnf
[mysqld]
user=mysql
default-storage-engine=INNODB
character-set-server=utf8
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[root@JackRoy ~]# mkdir -p /opt/dockers/docker_db_mysql/mysql_data/db
[root@JackRoy ~]# mkdir -p /opt/dockers/docker_db_mysql/mysql_data/init
[root@JackRoy ~]# vim /opt/dockers/docker_db_mysql/mysql_data/init/init.sql
create database common charset utf8;
use common;
grant all on common.* to 'common'@'localhost' identified by 'common_user@1235';
grant all on common.* to 'common'@'%' identified by 'common_user@1235'

封装docker启动命令

这里借用一下同事刘某源（感谢老源~）编写的docker启动命令，直接编辑输入：

[root@JackRoy online]# vim /usr/bin/dockerutils
#!/bin/bash
# Settle issue (e.g.: SELINUX) of when mount host directory, it has no privilege to access. 
chcon -Rt svirt_sandbox_file_t $dir > /dev/null 2>&1
container_name=
TOP_PID=$$
trap 'exit 127' TERM
gate_way=`route | grep 'default' | awk '{print $2}'`
code=0
find_name(){
     
    _container_name=`cat $dir/docker-compose.yml  | grep container_name | awk -F ':' '{print $2}' |  sed  's/^[       ]*//g'  | sed  's/[ ]*$//g'`
    _container_name=${
     _container_name//\"/}
    container_name=${_container_name//\'/}
    if [ x$container_name == x ]
       then
         echo -e "\033[31mERROR : please set container_name in your docker-compose.yml file \033[0m"
         kill -s TERM $TOP_PID
    fi
}
check(){
    _host_name=`cat $dir/docker-compose.yml  | grep hostname | awk -F ':' '{print $2}' |  sed  's/^[       ]*//g'  | sed  's/[ ]*$//g'`
    _host_name=${_host_name//\"/}
    host_name=${_host_name//\'/}
echo "-------------------------------------------------"$host_name
    if [ x$host_name == x ]
       then
         echo -e "\033[31mERROR : hostname not set !  \033[0m"
		 code=1
    fi	
   _ip=`cat $dir/docker-compose.yml  | grep ipv4_address | awk -F ':' '{print $2}' |  sed  's/^[       ]*//g'  | sed  's/[ ]*$//g'`
   _ip=${_ip//\"/}
   ip=${_ip//\'/}
   if [ $1 = y ] ; then
      fail=`ping $ip -c 3 -s 1 -W 1 | grep "100% packet loss" | wc -l`
      if [ $fail -eq 0 ] 
         then
         echo -e "\033[31mERROR : address is already in use \033[0m"
         code=1
      fi
    
   fi
   if [ $code -ne 0 ] ; then  kill -s TERM $TOP_PID  ;fi 

}
up(){
    check n
    docker-compose -f $dir/docker-compose.yml up -d
    start
}
reup(){
   docker rm -f $container_name
   up
}
start(){
   docker start $container_name
}

stop(){
   docker stop $container_name
}

restart(){
   docker stop $container_name
   sleep 3
   docker start $container_name
}
usage(){
     echo -e " Usage : \n \t $0 [ usage ] |  < up | reup | start | stop | restart > "
     echo -e "\t ============= nat docker ==============="
     echo -e "\t up : create container and start app"
     echo -e "\t reup : re-create container and start app" 
     echo -e "\t start : start container and app"
     echo -e "\t stop : stop container and app"
     echo -e "\t restart : restart container and app" 
     kill -s TERM $TOP_PID
}
if [ "$1"x = ""x ] || [ "$1"x = "usage" ] ; then
   usage
fi
find_name
$@ 
exit $?

创建启动配置文件

进入/opt/dockers/docker_db_mysql/online目录下：

[root@JackRoy online]# cd /opt/dockers/docker_db_mysql/online

编辑deploy_comm.sh并输入：

#!/bin/bash
dir=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
.  dockerutils $@

编辑docker-compose.yml并输入：

version: '2.2'
services:
    mysqlcommon55:
        image: "docker.io/mysql:5.5"
        container_name: mysql-common
        hostname: mysql-common
        restart: always
        volumes:
            - "../mysql_data/db:/var/lib/mysql"
            - "../mysql_data/conf/my.cnf:/etc/my.cnf"
            - "../mysql_data/init:/docker-entrypoint-initdb.d/"
        cpus: "1"
        mem_limit: "256M"
        environment:
            MYSQL_ROOT_PASSWORD: "root@123"
            MYSQL_USER: 'common'
            MYSQL_PASS: 'common@123'
        ports:
            - "3307:3306"
        networks:
            aidata_network:
                ipv4_address: 10.111.113.20

networks:
  aidata_network:
    external: true

启动

在/opt/dockers/docker_db_mysql/online路径下，执行启动命令：

# deploy_comm.sh 支持 reup up stop多种命令
[root@JackRoy online]# sh deploy_comm.sh reup
Error response from daemon: No such container: mysql-common
-------------------------------------------------mysql-common
WARNING: Found orphan containers (jenkins, gitlab) for this project. If you removed or renamed this service in your compose file, you can run this command with the --remove-orphans flag to clean it up.
Pulling mysqlcommon55 (docker.io/mysql:5.5)...
Trying to pull repository docker.io/library/mysql ... 
5.5: Pulling from docker.io/library/mysql
743f2d6c1f65: Pull complete
3f0c413ee255: Pull complete
aef1ef8f1aac: Pull complete
f9ee573e34cb: Pull complete
3f237e01f153: Pull complete
03da1e065b16: Pull complete
04087a801070: Pull complete
7efd5395ab31: Pull complete
1b5cc03aaac8: Pull complete
2b7adaec9998: Pull complete
385b8f96a9ba: Pull complete
Digest: sha256:12da85ab88aedfdf39455872fb044f607c32fdc233cd59f1d26769fbf439b045
Status: Downloaded newer image for docker.io/mysql:5.5
Creating mysql-common ... done
mysql-common

执行启动命令以后我们进入docker容器，如果能成功进入并进入mysql那便是执行成功了：

[root@JackRoy online]# docker exec -it mysql-common bash
root@mysql-common:/# mysql -uroot -proot@123
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.62 MySQL Community Server (GPL)

Copyright (c) 2000, 2018, 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> exit
Bye
root@mysql-common:/# exit
exit
[root@JackRoy online]#

后记

docker版mysql的安装过程相对简单，朋友们在操作过程遇到什么问题可以留言交流

跳转

第一节 基础环境介绍与准备
第二节 docker版gitlab安装和配置
第三节 docker版jenkins安装和配置
第四节 docker版mysql安装和配置
第五节 docker信息明细表设计与实现（含收集脚本）
第六节 docker容器自动化生成脚本
第七节 自动生成docker容器并启动项目