Docker集群swarm安装和简单使用搭建nginx

docker安装swarm

操作的ip地址：192.168.0.200

1、下载swarm

下载swarm插件

docker pull swarm

2、安装swarm

docker swarm init --advertise-addr 192.168.0.200:2377 --listen-addr 192.168.0.200:2377

输出

[root@localhost ~]# docker swarm init --advertise-addr 192.168.0.200:2377 --listen-addr 192.168.0.200:2377
Swarm initialized: current node (r3a32j3o9gr964xoksyha2i8m) is now a manager.

To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-1f48vzkywen673g6fuj6xl9m6pq8niuizw3tm1b75zjt7ak8o6-7c87bf6qurrp3vrlpq6cysd82 192.168.43.49:2377

To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.

3、将本机加入节点

docker swarm join-token manager

输出

[root@localhost ~]# docker swarm join-token manager
To add a manager to this swarm, run the following command:
    docker swarm join --token SWMTKN-1-1f48vzkywen673g6fuj6xl9m6pq8niuizw3tm1b75zjt7ak8o6-2ofub2vc7qteetwyi92d1krek 192.168.43.49:2377

用yml文件启动nginx

1、下载nginx

docker pull nginx:1.19.5

2、编写启动文件nginx.yml

[root@localhost nginx]# cat nginx.yml 
version: '3'

services: 
  nginx:
    image: nginx:1.19.5
    deploy:
      replicas: 3
    ports: 
      - "18081:80"
    networks: 
      - net
  visualizer:
    image: dockersamples/visualizer:stable
    ports: 
      - "8080:8080"
    volumes: 
      - "/var/run/docker.sock:/var/run/docker.sock"
    deploy:
      placement:
        constraints: [node.role == manager]
    networks: 
      - net

networks: 
  net:

3.启动nginx

docker stack deploy --with-registry-auth -c nginx.yml rb

4.查看启动情况

docker stack services rb

输出

[root@localhost nginx]# docker stack services rb
ID             NAME            MODE         REPLICAS   IMAGE                             PORTS
0p33122t1wy5   rb_nginx        replicated   3/3        nginx:1.19.5                      *:18081->80/tcp
tyzq1h1cz0v0   rb_visualizer   replicated   1/1        dockersamples/visualizer:stable   *:8080->8080/tcp