参考文档：https://docs.docker.com/engine/install/centos/#prerequisites

在CentOS上安装 Docker Engine并部署springboot项目运行环境

一. 安装docker

1.1. 系统要求

要安装 Docker 引擎，您需要 CentOS 7、CentOS 8 （stream）或 CentOS 9 （stream）的維護版本。不支持或测试存档版本。
必须启用存储库。默认情况下，此存储库处于启用状态，但如果已禁用它，则需要重新启用它。centos-extras
建议使用存储驱动程序。overlay2

1.2. 卸载老的版本

sudo yum remove docker
docker-client
docker-client-latest
docker-common
docker-latest
docker-latest-logrotate
docker-logrotate
docker-engine

1.3. 使用存储库安装docker

1.3.1）设置存储库

sudo yum install -y yum-utils

sudo yum-config-manager
--add-repo
https://download.docker.com/linux/centos/docker-ce.repo

1.3.2）安装最新版Docker 引擎
sudo yum install docker-ce docker-ce-cli containerd.io docker-compose-plugin

1.3.3）启动Docker
sudo systemctl start docker
设置成开机自启动
systemctl enable docker

1.3.4) 通过运行映像来验证 Docker 引擎是否已正确安装。hello-world

二. 配置阿里云镜像加速

用对应账号登录阿里云网站，找到-》镜像工具=》镜像加速器
https://cr.console.aliyun.com/?spm=a2c4g.11186623.0.0.19e6a42dmXkt6R

加速器地址：https://对应的.mirror.aliyuncs.com

2.1）. 安装／升级Docker客户端

推荐安装1.10.0以上版本的Docker客户端，参考文档docker-ce

2.2). 配置镜像加速器

针对Docker客户端版本大于 1.10.0 的用户

您可以通过修改daemon配置文件/etc/docker/daemon.json来使用加速器

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://对应的.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

2.3). 验证是否配置成功

docker info

检查Registry mirrors: 是否已经是阿里云加速器地址

三. 安装项目依赖环境

1. JDK

[root@localhost ~]# java -version
openjdk version "1.8.0_282"
OpenJDK Runtime Environment (build 1.8.0_282-b08)
OpenJDK 64-Bit Server VM (build 25.282-b08, mixed mode)

备注：springboot项目中，mysql，redis, host写成IP 宿主机的IP

Dockerfile

FROM java:8
VOLUME /tmp
ADD admin.jar jrt.jar
EXPOSE 20004
ENTRYPOINT ["java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "/jrt.jar"]

mkdir /docker-v/jrtdocker/
cd /docker-v/jrtdocker
admin.jar
Dockfile

docker build -t myjrt .

docker run -d --restart=always -p 20004:20004 myjrt

docker logs -f 76b

2. Redis

[root@localhost ~]# redis-cli
127.0.0.1:6379> info

Server

redis_version:6.2.6

Docker安装Redis:
docker pull redis:6.2.6

docker run --name myredis -d -p 6379:6379 --restart=always -v /docker-v/myredis/conf:/usr/local/etc/redis -v /docker-v/myredis/data:/data redis:6.0.2 redis-server /usr/local/etc/redis/redis.conf

vim /docker-v/myredis/conf/redis.conf

# requirepass t123456

3. Nginx

[root@localhost ~]# nginx -V
nginx version: nginx/1.16.1

docker pull nginx:1.16.1

docker run -p 80:8080 -d --restart=always --name mynginx
-v /docker-v/mynginx/log:/var/log/nginx
-v /docker-v/mynginx/conf:/etc/nginx/conf.d
-v /home/cloud_platform/dist_1/:/home/cloud_platform/dist_1/
-v /home/Medical/resource/uploadPath/:/home/Medical/resource/uploadPath/
nginx:1.16

vim /docker-v/mynginx/conf/test.conf

server {
        listen       8080;
        server_name  localhost;
        client_max_body_size 52M;
        root         /home/cloud_platform/dist_1;

        location / {
            try_files $uri $uri/ /index.html;
            index  index.html index.htm;
        }

       # location /download {# 文件下载
         #   add_header  Content-Type  "application/octet-stream";# 避免浏览器打开文件
       #     alias   /tmp/test/upload;
       # }

         location /prod-api/{
                proxy_set_header Host $http_host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header REMOTE-HOST $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_pass          http://192.168.1.157:20004/;
         }

        error_page 404 /404.html;
        location = /404.html {
        }

        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
        }
    }

vim /docker-v/mynginx/conf/online.conf

4. Mysql

docker pull mysql:5.7

docker run --name mymysql -p 3306:3306 --restart=always -v /docker-v/mysql/custom/my.cnf:/etc/mysql/my.cnf
-e MYSQL_ROOT_PASSWORD='UIIO988IINan'
-v /docker-v/mysql/data:/var/lib/mysql
-d mysql:5.7

vim my.cnf
[mysqld]
lower_case_table_names=1
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

docker-compose 编排

docker-compose.yml

version: "3.0"
services:
  db:
    image: mysql:5.7
    container_name: mysql
    ports:
      - "3306:3306"
    volumes:
      - /docker-v/mysql/data:/var/lib/mysql
      - /docker-v/mysql/custom/my.cnf:/etc/mysql/my.cnf
      - /docker-v/mysql/log:/var/log/mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: "UIIO988IINan"

  redis:
    image: redis:6.2.6
    container_name: redis
    ports:
      - "6379:6379"
    restart: always
    volumes:
      - /docker-v/myredis/conf:/usr/local/etc/redis
      - /docker-v/myredis/data:/data
    command: redis-server /usr/local/etc/redis/redis.conf

  web:
    build: ./
    restart: always
    depends_on:
      - db
      - redis
    ports:
      - "20004:20004"

  nginx:
    image: nginx:1.16.1
    container_name: nginx
    ports:
      - "443:443"
      - "80:8080"
    restart: always
    volumes:
      - /docker-v/mynginx/log:/var/log/nginx
      - /docker-v/mynginx/conf:/etc/nginx/conf.d
      - /home/cloud_platform/dist_1/:/home/cloud_platform/dist_1/

启动所有服务：

docker-compose up -d

注意: mysql数据库密码中含有特殊字符$时要进行转移写成$$。

目录结构

[root@localhost docker-v]# tree ./
./
├── jrtdocker
│   ├── docker-compose.yml
│   ├── Dockerfile
│   └── admin.jar
├── mynginx
│   ├── conf
│   │   └── test.conf
│   ├── html
│   └── log
│       ├── access.log
│       └── error.log
├── myredis
│   ├── conf
│   │   └── redis.conf
│   └── data
│       └── dump.rdb
└── mysql
    ├── custom
    │   └── my.cnf -> /etc/alternatives/my.cnf
    ├── data
    ├── log

还有点问题

nginx.conf /4xx.html /5xx.html需要映射
mysql 服务创建一个新用户

部署服务器尝试用Docker