docker之创建MariaDB镜像的方法

一、基于commit命令方式创建

docker的安装

[root@test01 ~]# yum install docker
[root@test01 ~]# systemctl enable docker
[root@test01 ~]# systemctl start docker

下载本地镜像

[root@test01 ~]# docker pull centos:7.4.1708
[root@test01 ~]# docker images 
repository   tag     image id   created    size
docker.io/centos 7.4.1708   3afd47092a0e  3 months ago  196.6 mb

创建交互型容器

[root@test01 ~]# docker run -it --name="mysql_server" centos /bin/bash

4.安装mariadb服务

[root@e8126d0481d2 /]# yum -y install mariadb-server net-tools

初始化mariadb

[root@e8126d0481d2 /]# mysql_install_db --user=mysql

后台启动mariadb服务

[root@e8126d0481d2 /]# mysqld_safe &
[1] 114
[root@e8126d0481d2 /]# 
180210 13:45:27 mysqld_safe logging to '/var/log/mariadb/mariadb.log'.
180210 13:45:27 mysqld_safe starting mysqld daemon with databases from /var/lib/mysql

[root@e8126d0481d2 /]# netstat -tunpl
active internet connections (only servers)
proto recv-q send-q local address   foreign address   state  pid/program name 
tcp  0  0 0.0.0.0:3306   0.0.0.0:*    listen  -

创建mariadb登录密码，并可以指定ip登录

[root@e8126d0481d2 /]# mysqladmin -u root password 'kingsoft'
[root@e8126d0481d2 /]# mysql -u root -p
enter password:
mariadb [(none)]> show databases;
mariadb [(none)]> use mysql;
mariadb [mysql]> select host from user where user='root';
mariadb [mysql]> grant all privileges on *.* to 'root'@'%' identified by 'kingsoft' with grant option;
mariadb [mysql]> update user set password=password('kingsoft') where user='root' and host='e8126d0481d2';
mariadb [mysql]> flush privileges;
mariadb [mysql]> exit

容器登录验证

[root@e8126d0481d2 /]# mysql -u root -h 172.17.0.2 -p
enter password:
mariadb [(none)]> exit

创建容器启动脚本

[root@e8126d0481d2 ~]# cat run.sh
#!/bin/sh

mysqld_safe

创建镜像

[root@test01 ~]# docker ps -a
container id  image    command    created    status      ports    names
e8126d0481d2  centos    "/bin/bash"   11 minutes ago  exited (0) 8 seconds ago      mysql_server
[root@test01 ~]# docker commit mysql_server mariadb:1.0

创建容器

[root@test01 ~]# docker run -d -p 13306:3306 mariadb:1.0 /root/run.sh
[root@test01 ~]# docker ps
container id  image    command    created    status    ports      names
eed3e88a1261  mariadb:1.0   "mysqld_safe"  4 seconds ago  up 3 seconds  0.0.0.0:13306->3306/tcp romantic_hamilton

主机登录验证

[root@test01 ~]# yum -y install mariadb
[root@test01 ~]# mysql -u root --port=13306 -p
mariadb [(none)]>

二、基于dockerfile方式创建

设置创建目录和文件

[root@test01 ~]# mkdir mariadb_dockerfile && cd mariadb_dockerfile
[root@test01 mariadb_dockerfile]# touch db_init.sh 
[root@test01 mariadb_dockerfile]# touch run.sh

编辑dockerfile等文件

dockerfile

[root@test01 mariadb_dockerfile]# cat dockerfile 
#使用的基础镜像
from centos:7.4.1708

#添加作者信息
maintainer liuxin [e-mail]

#安装mariadb数据库
run yum -y install mariadb-server

#设置环境变量，便于管理
env mariadb_user root
env mariadb_pass kingsoft
#让容器支持中文
env lc_all en_us.utf-8

#初始化数据库
add db_init.sh /root/db_init.sh
run chmod 775 /root/db_init.sh
run /root/db_init.sh

#导出端口
expose 3306

#添加启动文件
add run.sh /root/run.sh
run chmod 775 /root/run.sh

#设置默认启动命令
cmd ["/root/run.sh"]

db_init.sh

[root@test01 mariadb_dockerfile]# cat db_init.sh 
#!/bin/bash

mysql_install_db --user=mysql
sleep 3
mysqld_safe &
sleep 3
#mysqladmin -u "$mariadb_user" password "$mariadb_pass"
mysql -e "use mysql; grant all privileges on *.* to '$mariadb_user'@'%' identified by '$mariadb_pass' with grant option;"
h=$(hostname)
mysql -e "use mysql; update user set password=password('$mariadb_pass') where user='$mariadb_user' and host='$h';"
mysql -e "flush privileges;"

run.sh

[root@test01 mariadb_dockerfile]# cat run.sh 
#!/bin/bash
mysqld_safe

创建镜像

[root@test01 mariadb_dockerfile]# docker build -t liuxin/centos-mariadb:v1 ./

创建容器

[root@test01 mariadb_dockerfile]# docker run -d -p 13306:3306 liuxin/centos-mariadb:v1 /root/run.sh
[root@test01 mariadb_dockerfile]# docker ps
container id  image      command    created    status    ports      names
7743527ac603  liuxin/centos-mariadb:v1 "/root/run.sh"  5 seconds ago  up 3 seconds  0.0.0.0:13306->3306/tcp nostalgic_mirzakhani

登录验证

[root@test01 mariadb_dockerfile]# mysql -uroot -h 127.0.0.1 --port=13306 -p
enter password: 
welcome to the mariadb monitor. commands end with ; or \g.
your mariadb connection id is 1
server version: 5.5.56-mariadb mariadb server

copyright (c) 2000, 2017, oracle, mariadb corporation ab and others.

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

mariadb [(none)]> exit

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