【Docker系列】Docker Swarm 集群 （swarm，可视化容器管理工具 Portainer）

56.111.111.100  master
56.111.111.101  slave1
56.111.111.102  slave2

hostnamectl set-hostname 新的主机名

vim /lib/systemd/system/docker.service

# 可通过 find 命令 查找 docker.service 文件
# find / -name docker.service

## 在“ExecStart=/usr/bin/dockerd”后添加“-H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock”

# 如下

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock -H fd:// --containerd=/run/containerd/containerd.sock

systemctl daemon-reload
systemctl restart docker

#56.111.111.100   本机ip
docker swarm init --advertise-addr 56.111.111.100

docker swarm join --token SWMTKN-1-3oovrzba9wjaf4fe5i3mbdnksmrdb0mjfw206qmxpsbiflmxw5-bcjueneetcbvgdhhtk3awkfno 56.111.111.100:2377

docker node ls

//要加入集群的主机
[root@localhost ~]# docker swarm join --token SWMTKN-1-3oovrzba9wjaf4fe5i3mbdnksmrdb0mjfw206qmxpsbiflmxw5-bcjueneetcbvgdhhtk3awkfno 56.111.111.100:2377

[root@master /]# docker node ls
ID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS      ENGINE VERSION
x2h88pu8237u0aqbqnmvy3vnc *   master     Ready               Active              Leader              19.03.5
uzwuj9aavrvw6fdcisoiigktm     slave1     Ready               Active                                  19.03.5
pdwlvvud2t08565njvw63ssuv     slave2     Ready               Active                                  19.03.4

mkdir portainer 

//创建portainer-agent-stack.yml文件
vim portainer-agent-stack.yml  yml文件

version: '3.2'

services:
  agent:
    image: portainer/agent:2.11.1
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - /var/lib/docker/volumes:/var/lib/docker/volumes
    networks:
      - agent_network
    deploy:
      mode: global
      placement:
        constraints: [node.platform.os == linux]

  portainer:
    image: portainer/portainer-ce:2.11.1
    command: -H tcp://tasks.agent:9001 --tlsskipverify
    ports:
      - "9443:9443"
      - "9000:9000"
      - "8000:8000"
    volumes:
      - portainer_data:/data
    networks:
      - agent_network
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints: [node.role == manager]

networks:
  agent_network:
    driver: overlay
    attachable: true

volumes:
  portainer_data:

##直接创建服务
docker stack deploy -c portainer-agent-stack.yml portainer 

docker stack ls

docker stack ps portainer