系统实践第二次作业
使用Dockerfile文件实现自定义镜像
1.题目要求
推荐apache或nginx，要求标明镜像作者信息，安装必要的工具以方便维护；设定你自己的web存放目录，安全起见，请将默认的监听端口80更改为你自定义的端口，并且声明暴露的端口，容器启动时，能直接进入web代码的存放目录。
2.新建一个目录下面新建三个vi，分别存放三个文件
3.default.conf
这是nginx的配置文件
charset utf-8;
server {
listen 2435;
server_name localhost;
location / {
root /usr/share/nginx/myweb;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/myweb;
}
}
1）listen是监听端口，默认是80，这里修改为我学号后四位2435。
2）root指定了我们网页资源文件存放的目录，默认为/usr/share/nginx/html，这里指定为/usr/share/nginx/myweb
这里出了点问题，主要是启动容器后会报错
百度解决
4.Dockerfile文件
FROM nginx
MAINTAINER zhanghao031702435
RUN apt-get update && apt-get install -y nginx vim net-tools
COPY default.conf /etc/nginx/conf.d/
COPY index.html /home/zhanghao/docker1/
WORKDIR /home/zhanghao/docker1/
EXPOSE 2435
5.index.html文件
<!DOCTYPE html>
<html>
<head>
<title>031702435Nginx</title>
</head>
<body>
<h1>张昊</h1>
<h1>031702435</h1>
<h1>Welcome Nginx</h1>
</body>
</html>
6.构建镜像
sudo docker build -t zhnginx:1.0 .
james@allan:-ThinkPad-T470p:~/WorkPath$ docker build -t zhnginx:1.0
Sending build context to Docker daemon 53.25kB
Step 1/8 : FROM centos:centos7
---> 5e35e350aded
Step 2/8 : MAINTAINER ZhuQingzhang031702426
---> Running in 87af89b7374e
Removing intermediate container 87af89b7374e
---> 5766b04652bc
Step 3/8 : ADD default.conf /etc/nginx/conf.d/
---> 8bff7cc65be0
Step 4/8 : ADD nginx.repo /etc/yum.repos.d/
---> 5ada3f731c58
Step 5/8 : ADD index.html /usr/share/nginx/mydir/
---> 0cbc75582c8f
Step 6/8 : RUN yum install -y nginx
---> Running in 996d4111f15d
Loaded plugins: fastestmirror, ovl
Determining fastest mirrors
* base: mirrors.cn99.com
* extras: mirrors.cn99.com
* updates: mirrors.cn99.com
Resolving Dependencies
--> Running transaction check
---> Package nginx.x86_64 1:1.16.1-1.el7.ngx will be installed
--> Processing Dependency: openssl >= 1.0.2 for package: 1:nginx-1.16.1-1.el7.ngx.x86_64
--> Running transaction check
---> Package openssl.x86_64 1:1.0.2k-19.el7 will be installed
--> Processing Dependency: make for package: 1:openssl-1.0.2k-19.el7.x86_64
--> Running transaction check
---> Package make.x86_64 1:3.82-24.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
nginx x86_64 1:1.16.1-1.el7.ngx nginx 766 k
Installing for dependencies:
make x86_64 1:3.82-24.el7 base 421 k
openssl x86_64 1:1.0.2k-19.el7 base 493 k
Transaction Summary
================================================================================
Install 1 Package (+2 Dependent packages)
Total download size: 1.6 M
Installed size: 4.6 M
Downloading packages:
warning: /var/cache/yum/x86_64/7/base/packages/openssl-1.0.2k-19.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key for openssl-1.0.2k-19.el7.x86_64.rpm is not installed
--------------------------------------------------------------------------------
Total 12 kB/s | 1.6 MB 02:23
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
Package : centos-release-7-7.1908.0.el7.centos.x86_64 (@CentOS)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : 1:make-3.82-24.el7.x86_64 1/3
Installing : 1:openssl-1.0.2k-19.el7.x86_64 2/3
Installing : 1:nginx-1.16.1-1.el7.ngx.x86_64 3/3
warning: /etc/nginx/conf.d/default.conf created as /etc/nginx/conf.d/default.conf.rpmnew
----------------------------------------------------------------------
Thanks for using nginx!
Please find the official documentation for nginx here:
* http://nginx.org/en/docs/
Please subscribe to nginx-announce mailing list to get
the most important news about nginx:
* http://nginx.org/en/support.html
Commercial subscriptions for nginx are available on:
* http://nginx.com/products/
----------------------------------------------------------------------
Verifying : 1:make-3.82-24.el7.x86_64 1/3
Verifying : 1:nginx-1.16.1-1.el7.ngx.x86_64 2/3
Verifying : 1:openssl-1.0.2k-19.el7.x86_64 3/3
Installed:
nginx.x86_64 1:1.16.1-1.el7.ngx
Dependency Installed:
make.x86_64 1:3.82-24.el7 openssl.x86_64 1:1.0.2k-19.el7
Complete!
Removing intermediate container 996d4111f15d
---> 6b1632e7aeba
Step 7/8 : EXPOSE 2426
---> Running in 3be6a08ed493
Removing intermediate container 3be6a08ed493
---> 1f9d81cd0e6e
Step 8/8 : CMD ["/usr/sbin/nginx", "-g","daemon off;"]
---> Running in 3f5e0855ca24
Removing intermediate container 3f5e0855ca24
---> 25bb06e256ce
Successfully built 25bb06e256ce
Successfully tagged zhnginx:1.0
7.运行
docker run -dit -p 2435:2435 zhnginx：1.0
docker ps -a
curl 127.0.0.1:2435
实现一个自定义的数据库容器服务
1.题目要求
可选择Mysql，Mariadb等，要求标明镜像作者信息，为了方便维护，需要能够查看容器内的配置信息，包括但不限于网络、应用配置文件等。在环境变量中设置好数据库的root密码且不允许空密码登录，创建一个测试数据库，指定用户名和密码
2.Dockerfile
#设置基础镜像信息
FROM mysql:5.7
#镜像作者信息
MAINTAINER zhanghao031702435
#设置免密登录
ENV MYSQL_ALLOW_EMPTY_PASSWORD no
ENV MYSQL_ROOT_PASSWORD=123456
#将所需文件放到容器中
COPY setup.sh /home/zh/docker2/setup.sh
COPY schema.sql /home/zh/docker2/schema.sql
COPY privileges.sql /home/zh/docker2/privileges.sql
#设置容器启动时执行的命令
CMD ["sh", "/mysql/setup.sh"]
3.setup.sh
#!/bin/bash
set -e
#查看mysql服务的状态，方便调试，这条语句可以删除
echo `service mysql status`
echo '1.启动mysql....'
#启动mysql
service mysql start
sleep 3
echo `service mysql status`
echo '2.开始导入数据....'
#导入数据
mysql < /home/zh/docker2/schema.sql
echo '3.导入数据完毕....'
sleep 3
echo `service mysql status`
#重新设置mysql密码
echo '4.开始修改密码....'
mysql < /home/zh/docker2/privileges.sql
echo '5.修改密码完毕....'
#sleep 3
echo `service mysql status`
echo 'mysql容器启动完毕,且数据导入成功'
tail -f /dev/null
4.schema.sql文件
-- 创建数据库
create database `docker_mysql` default character set utf8 collate utf8_general_ci;
use docker_mysql;
-- 建表
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` bigint(20) NOT NULL,
`email` varchar(255) DEFAULT NULL,
`username` varchar(255) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
-- 插入数据
INSERT INTO `user` (`id`, `email`, `username`)
VALUES
(0,'john.doe@example.com','user');
5.privileges.sql文件
use mysql;
select host, user from user;
-- 因为mysql版本是5.7，因此新建用户为如下命令：
create user kingdom identified by '123456';
-- 将docker_mysql数据库的权限授权给创建的用户kingdom，密码为123456：
grant all on docker_mysql.* to kingdom@'%' identified by '123456' with grant option;
-- 这一条命令一定要有：
flush privileges;
6.build image
docker build -t zh_mysql
james@allan:-ThinkPad-T470p:~/WorkPath$ docker build -t zh_mysql .
Sending build context to Docker daemon 53.76kB
Step 1/7 : FROM mysql:5.7
---> 273c7fcf9499
Step 2/7 : MAINTAINER ZhuQingzhang031702426
---> Running in 503def9323bf
Removing intermediate container 503def9323bf
---> 0746a5e33948
Step 3/7 : ENV MYSQL_ALLOW_EMPTY_PASSWORD no
---> Running in d5c793ed718e
Removing intermediate container d5c793ed718e
---> 4abbbc23c736
Step 4/7 : COPY setup.sh /mysql/setup.sh
---> 60ccc0169b0a
Step 5/7 : COPY schema.sql /mysql/schema.sql
---> 10d8c406fbf9
Step 6/7 : COPY privileges.sql /mysql/privileges.sql
---> 5cab43a4b03a
Step 7/7 : CMD ["sh", "/mysql/setup.sh"]
---> Running in 971eb396254f
Removing intermediate container 971eb396254f
---> 5e8f407f310f
Successfully built 5e8f407f310f
Successfully tagged zh_mysql:latest
7.运行
docker run -d -p 13306:3306 zh_mysql
docker ps -a
命令行进入容器
mysql -u kingdom -p
use docker_mysql;
show tables;
select * from test;
