使用docker容器部署考试系统

8.30

回顾

1、使用harbor仓库

python --version

yum -y update

yum -y install python2-pip

部署考试系统

使用docker部署project-exam-system

1、在一台主机内，实现容器的编排看，发布考试系统

2、环境准备

docker

docker-compose

docker脚本
[root@docker001 ~]# vim docker.sh
cat << EOF | tee /etc/modules-load.d/k8s.conf 
overlay
br_netfilter
EOF
 
modprobe overlay
 
modprobe br_netfilter
 
cat << EOF | tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
EOF
 
sysctl --system
 
yum install -y yum-utils device-mapper-persistent-data lvm2
 
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
 
 
 
yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y
 
# 运行docker脚本
[root@docker001 ~]# source docker.sh

修改配置文件

[root@docker001 ~]# vim /etc/docker/daemon.json
 
{
    "registry-mirrors": [
        "https://do.nark.eu.org",
        "https://dc.j8.work",
        "https://docker.m.daocloud.io",
        "https://dockerproxy.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://docker.nju.edu.cn"
    ]
}
[root@docker001 ~]# vim /usr/lib/systemd/system/docker.service 
13	ExecStart=/usr/bin/dockerd
[root@docker001 ~]# systemctl daemon-reload

重启服务

[root@docker001 ~]# systemctl restart docker

3、普通的部署

镜像

拉取nginx镜像
[root@docker001 ~]# docker pull nginx
查看镜像
[root@docker001 ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
nginx        latest    5ef79149e0ec   2 weeks ago   188MB
创建容器
# 创建容器
[root@docker001 ~]# docker run -itd -p80:80 nginx:latest 
db8ffd17378657990222bb65accff54631c41e9251c844f1f95c8b66d44a0c7a
 
# 查看创建的容器
[root@docker001 ~]# docker ps
CONTAINER ID   IMAGE          COMMAND                   CREATED          STATUS          PORTS                               NAMES
db8ffd173786   nginx:latest   "/docker-entrypoint.…"   26 seconds ago   Up 25 seconds   0.0.0.0:80->80/tcp, :::80->80/tcp   upbeat_stonebraker
 
# 访问测试
[root@docker001 ~]# curl localhost
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
 
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
 
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
 
# 使用exec命令查看容器nginx中的/usr/share/nginx/html目录
[root@docker001 ~]# docker exec -it db8 ls /usr/share/nginx/html
50x.html  index.html

--前端：nginx latest服务

创建一个目录，不单独放置前端的资料，将后端的所有资料也都放在这里

创建目录
[root@docker001 ~]# mkdir project_exam_system
[root@docker001 ~]# cd project_exam_system/
[root@docker001 project_exam_system]# mkdir web
[root@docker001 project_exam_system]# cd web/
[root@docker001 web]# rz -E
rz waiting to receive.


将dist文件放到web目录下
# 解压dist.zip包
[root@docker001 web]# unzip dist.zip
 
# 查看解压后的文件
[root@docker001 web]# ls
dist  dist.zip
 
# 删除dist.zip包
[root@docker001 web]# rm -rf dist.zip 
 
# 只需要留下解压后的dist文件
[root@docker001 web]# ls
dist

#查看内容
[root@docker001 web]# cd ..
[root@docker001 project_exam_system]# ls web/dist/
assets  favicon.ico  index.html

删除测试nginx页面所创建容器
# 停止db8容器的运行
[root@docker001 project_exam_system]# docker stop db8
db8
 
# 删除容器
[root@docker001 project_exam_system]# docker rm db8
db8


#创建容器，映射端口，挂载目录
[root@docker001 web]# docker run -itd -p80:80 -v /root/project_exam_system/web/dist/:/usr/share/nginx/html nginx:latest
11568e4a88646ea4b1cb9243678fe220ae263ea70591441f093dd72a7f4660a8

查看所创建的容器

[root@docker001 web]# docker ps
CONTAINER ID   IMAGE          COMMAND                   CREATED          STATUS          PORTS                                       NAMES
11568e4a8864   nginx:latest   "/docker-entrypoint.…"   29 seconds ago   Up 28 seconds   0.0.0.0:80->80/tcp, :::80->80/tcp           vibrant_gates

修改hosts文件

-在物理机的C:\Windows\System32\drivers\etc中找到hosts文件，添加IP地址和域名

--测试

--上传前端项目dist

--创建启动容器

[root@d3 project_exam_system]# docker run -itd -p80:80 -v /root/project_exam_system/web/dist/:/usr/share/nginx/html nginx:latest5b4ca7741c21ecffe34e13e3b7c6da3e9fb7901bb68b3bab7c470ee83b0ca91b[root@d3 project_exam_system]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES5b4ca7741c21 nginx:latest "/docker-entrypoint.…" 4 seconds ago Up 3 seconds 0.0.0.0:80->80/tcp, :::80->80/tcp wonderful_hertz

浏览器访问测试

在实现登录的时候，出现问题，因为后端还没有部署

登录的时候

-后端的业务 springboot 不用单独部署tomcat，已经在springboot中内置

-数据持久化业务 mysql5.7

关于后端

#拉取cnetos镜像
[root@docker001 ~]# docker pull centos
#拖包
#将软件包jdk-17_linux-x64_bin.tar.gz 和软件包project_exam_system.zip拖到root下
[root@docker001 ~]# ls
anaconda-ks.cfg  docker.sh  jdk-17_linux-x64_bin.tar.gz  project_exam_system.zip
#解压
解压project_exam_system.zip软件包
[root@docker001 ~]# unzip project_exam_system.zip 
Archive:  project_exam_system.zip
 
# 查看解压包后的文件
[root@docker001 ~]# ls
anaconda-ks.cfg         docker.sh                    Project_ExamSystem-V1.0.0.war
application.properties  jdk-17_linux-x64_bin.tar.gz  project_exam_system.zip
dist                    project_exam_system.sql

#创建容器
# 使用centos镜像创建容器
[root@docker001 ~]# docker run -itd centos:latest /bin/bash
d107d28c1503012c6f9aa43d09c94d64f439c60de61d2c3c2d4d565690fdca0f
 
# 查看创建的容器
[root@docker001 ~]# docker ps
CONTAINER ID   IMAGE           COMMAND                   CREATED          STATUS          PORTS                               NAMES
d107d28c1503   centos:latest   "/bin/bash"               12 seconds ago   Up 11 seconds                                       quirky_chandrasekhar
11568e4a8864   nginx:latest    "/docker-entrypoint.…"   2 minutes ago    Up 2 minutes    0.0.0.0:80->80/tcp, :::80->80/tcp   vibrant_gates


# 将宿主机的jdk包复制到容器中
[root@docker001 ~]# docker cp jdk-17_linux-x64_bin.tar.gz d107:/
Successfully copied 183MB to d107:/
 
# 将宿主机的Project包复制到容器中
[root@docker001 ~]# docker cp Project_ExamSystem-V1.0.0.war d107:/
Successfully copied 41MB to d107:/
 
# 将宿主机的application文件复制到容器中
[root@docker001 ~]# docker cp application.properties d107:/
Successfully copied 4.1kB to d107:/

#挂载容器终端
[root@docker001 ~]# docker attach d107

查看容器中是否有软件包

[root@d107d28c1503 /]# ls
Project_ExamSystem-V1.0.0.war  home			    media  run	 usr
application.properties	       jdk-17_linux-x64_bin.tar.gz  mnt    sbin  var
bin			       lib			    opt    srv
dev			       lib64			    proc   sys
etc			       lost+found		    root   tmp

# 在容器中创建目录
[root@d107d28c1503 /]# mkdir /usr/local/jdk
 
# 解压软件包到指定目录，并且跳过第一层目录
[root@d107d28c1503 /]# tar -zxf jdk-17_linux-x64_bin.tar.gz -C /usr/local/jdk/ --strip-components=1
 
[root@d107d28c1503 /]# ls /usr/local/jdk/
LICENSE  README  bin  conf  include  jmods  legal  lib	man  release

修改application.properties文件

[root@d107d28c1503 /]# vi application.properties 
spring.datasource.url=jdbc:mysql://192.168.2.60:3306/project_exam_system

在容器中运行，且访问验证

[root@d107d28c1503 /]# /usr/local/jdk/bin/java -jar Project_ExamSystem-V1.0.0.war
 
  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 
 :: Spring Boot ::                (v3.3.2)
 ...
...
[root@docker001 ~]# curl 173.17.0.3:8080
 
{"code":20002,"msg":"账号不存在或密码错误"}[root@docker001 ~]#

创建java镜像

[root@docker001 ~]# docker commit d107 java:v0
sha256:64b4ea040bff2b7d3476273d62a5ae235fabe90e495ea81c6ac4efc6e33f2fd3
 
# 查看创建的java镜像
[root@docker001 ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED          SIZE
java         v0        64b4ea040bff   10 seconds ago   774MB
<none>       <none>    22eb536c0d76   54 minutes ago   774MB
nginx        latest    5ef79149e0ec   2 weeks ago      188MB
centos       latest    5d0da3dc9764   2 years ago      231MB
[root@docker001 ~]# docker ps
CONTAINER ID   IMAGE           COMMAND                   CREATED          STATUS          PORTS                               NAMES
d107d28c1503   centos:latest   "/bin/bash"               14 minutes ago   Up 14 minutes                                       quirky_chandrasekhar
11568e4a8864   nginx:latest    "/docker-entrypoint.…"   17 minutes ago   Up 17 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp   vibrant_gates

删除centos创建的容器

# 停止容器
[root@docker001 ~]# docker stop d107
d107
 
# 删除容器
[root@docker001 ~]# docker rm d107
d107

用java镜像创建容器

[root@docker001 ~]# docker run -itd -p8080:8080 java:v0
464d9b2b5f0b4a0cb80ac134128130393f67f7d0bf37c84763cdbf5a29015c1f

运行

# 挂载创建的容器的终端
[root@docker001 ~]# docker attach 464d
 
# 运行
[root@464d9b2b5f0b /]# /usr/local/jdk/bin/java -jar Project_ExamSystem-V1.0.0.war

访问测试，出现200，500即可

数据库持久化-5.7.44

拉取mysql镜像

[root@docker001 ~]# docker pull mysql:5.7.44

创建

# 使用mysql镜像创建端口号为3306，用户和密码为root的容器
[root@docker001 ~]# docker run -itd -e MYSQL_ROOT_PASSWORD=root -p3306:3306 mysql:5.7.44 
1a07feb046ee3038c2364c5b655ff4cfd31acf28db5e747810fc42b05195338d
 
# 查看创建的容器
[root@docker001 ~]# docker ps 
CONTAINER ID   IMAGE          COMMAND                   CREATED              STATUS              PORTS                                                  NAMES
1a07feb046ee   mysql:5.7.44   "docker-entrypoint.s…"   About a minute ago   Up About a minute   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp   optimistic_herschel
464d9b2b5f0b   java:v0        "/bin/bash"               2 hours ago          Up About an hour    0.0.0.0:8080->8080/tcp, :::8080->8080/tcp              epic_pascal
11568e4a8864   nginx:latest   "/docker-entrypoint.…"   3 hours ago          Up About an hour    0.0.0.0:80->80/tcp, :::80->80/tcp                      vibrant_gates

在project_exam_system/目录下创建mysql目录
[root@docker001 ~]# mkdir mysql
[root@docker001 ~]# mv mysql project_exam_system/
[root@docker001 ~]# ls project_exam_system/

远程登录执行sql文件

完成之后，登录mysql

[root@docker001 ~]# docker exec -it 1a mysql -uroot -proot
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.44 MySQL Community Server (GPL)
 
Copyright (c) 2000, 2023, Oracle and/or its affiliates.
 
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.
 
 
# 查看数据库
mysql> show databases;
+---------------------+
| Database            |
+---------------------+
| information_schema  |
| mysql               |
| performance_schema  |
| project_exam_system |
| sys                 |
+---------------------+
5 rows in set (0.00 sec)
 
# 创建和java项目中的用户
mysql> create user 'zhangmin'@'%' identified by 'zhangmin';
Query OK, 0 rows affected (0.00 sec)
 
# 给创建的用户所有的权限
mysql> grant all on *.* to 'zhangmin'@'%';
Query OK, 0 rows affected (0.00 sec)
 
# 刷新权限
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
 
mysql>

再登录，输入用户名和密码，可以进入考试系统