docker compose 创建容器集群

r囧r小猫 2022-11-28 13:42 214阅读 0赞

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### docker compose 创建容器集群 ###

**nginx 代理 springboot应用，实现负载均衡调用**

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**springboot 应用**

**HelloController**

@RestController
    public class HelloController {
    
        @RequestMapping("/hello")
        public String hello(){
            return "hello world";
        }
    }

**应用打包上传到虚拟机，制作成镜像文件：hello-world**

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**nginx **

**nginx.conf**

user  nginx;
    worker_processes  1;
     
    error_log  /var/log/nginx/error.log warn;
    pid        /var/run/nginx.pid;
     
     
    events {
        worker_connections  1024;
    }
     
     
    http {
        include       /etc/nginx/mime.types;
        default_type  application/octet-stream;
     
        log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                          '$status $body_bytes_sent "$http_referer" '
                          '"$http_user_agent" "$http_x_forwarded_for"';
     
        access_log  /var/log/nginx/access.log  main;
     
        sendfile        on;
        #tcp_nopush     on;
     
        keepalive_timeout  65;
     
        #gzip  on;
     
        include /etc/nginx/conf.d/*.conf;
    }

**default.conf**

server {
        listen       80;
        server_name  localhost;
     
        location / {
            proxy_pass http://web-server;
    
            root   /usr/share/nginx/html;
            index  index.html index.htm;
        }
     
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }
     
    }
    
    upstream web-server {
        server 172.20.0.3:8080;
        server 172.20.0.4:8080;
    }

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**相关操作**

**docker-compose2.yml**

version: "3.8"
    services:
      nginx:
        image: nginx
        container_name: nginx
        volumes:
          - "/usr/nginx/nginx.conf:/etc/nginx/nginx.conf"
          - "/usr/nginx/conf.d/default8.conf:/etc/nginx/conf.d/default.conf"
        ports:
          - "80:80"
        networks:
          fixed:
            ipv4_address: "172.20.0.2"
      hello-world:
        image: hello-world
        container_name: hello-world
        ports:
          - "8081:8080"
        networks:
          fixed:
            ipv4_address: "172.20.0.3"
      hello-world2:
        image: hello-world
        container_name: hello-world2
        ports:
          - "8082:8080"
        networks:
          fixed:
            ipv4_address: "172.20.0.4"
    
    networks:
      fixed:
        ipam:
          driver: default
          config:
            - subnet: "172.20.0.0/24"

**创建并运行容器：****docker-compose -f docker-compose2.yml up**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkzMTYyNQ_size_16_color_FFFFFF_t_70][]

**查看容器：docker ps**

![20200818165818197.png][]

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**使用测试**

**localhost:8080/hello**

![20200818170001317.png][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkzMTYyNQ_size_16_color_FFFFFF_t_70]: /images/20221124/2e03048570a9447aa436021f0c9b12b4.png
[20200818165818197.png]: /images/20221124/e3c54f69889d43b0805e74651cd5bc1f.png
[20200818170001317.png]: /images/20221124/088d2e3b0af948a6ba87085c43c25bf6.png