Docker系列(五)-docker swarm安装及使用

Docker系列(五)-docker swarm安装及使用

1.docker swarm的安装

1.初始化manager节点

docker swarm init --advertise-addr=192.168.50.11

2.加入worker节点

docker swarm join --token SWMTKN-1-41k8btiw91kxppwsgt30iv4f86ownyu5gho2r9jlo4ifxh3p6k-btivncce7dtvbzc8kmr05hsiy 192.168.50.11:2377

3.查询节点状态

docker node ls

4.可以将worker节点提升成manager

docker node promote worker01-node
docker node promote worker02-node

#降级可以用demote
docker node demote worker01-node

2.docker swarm的基本操作

1.创建service

docker service create --name service_name image_name

2.查看当前swarm的service

docker service ls

3.查看service的启动日志

docker service logs service_name

4.查看service的详情

docker service inspect service_name

5.查看service运行在哪个node上

docker service ps service_name

6.水平扩展service

docker service scale service_name=3

7.删除service

docker service rm service_name

8.创建一个overlay网络

docker network create -d overlay my-overlay-net

9.创建使用overlay网络的service

docker service create --name tomcat -p 8080:8080 --network my-overlay-net tomcat

2.docker stack的基本操作

1.stack file文件格式

version: '3'
services:
  mongo:
    image: mongo
    restart: always
    networks: 
      - mongo_network
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 2
  mongo-express: 
    image: mongo-express
    restart: always
    networks: 
      - mongo_network
    ports:
      - target: 8081
        published: 80
        protocol: tcp
        mode: ingress
    environment:
      ME_CONFIG_MONGODB_SERVER: mongo
      ME_CONFIG_MONGODB_PORT: 27017
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
networks:
  mongo_network:
    external: true

2.部署堆栈

docker stack deploy

3.列出现有堆栈

docker stack ls

4.列出堆栈中的任务

docker stack ps

5.删除一个或多个堆栈

docker stack rm

6.列出堆栈中的服务

docker stack services