swarm stack 部署多 service 应用

先在swarm manager节点上安装一下 docker-compose

  1. vagrant@swarm-manager:~$ sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
  2. vagrant@swarm-manager:~$ sudo chmod +x /usr/local/bin/docker-compose

clone我们的代码仓库

  1. vagrant@swarm-manager:~$ git clone https://github.com/xiaopeng163/flask-redis
  2. Cloning into 'flask-redis'...
  3. remote: Enumerating objects: 22, done.
  4. remote: Counting objects: 100% (22/22), done.
  5. remote: Compressing objects: 100% (19/19), done.
  6. remote: Total 22 (delta 9), reused 7 (delta 2), pack-reused 0
  7. Unpacking objects: 100% (22/22), 8.60 KiB | 1.07 MiB/s, done.
  8. vagrant@swarm-manager:~$ cd flask-redis
  9. vagrant@swarm-manager:~/flask-redis$ ls
  10. Dockerfile  LICENSE  README.md  app.py  docker-compose.yml
  11. vagrant@swarm-manager:~/flask-redis$

环境清理

  1. vagrant@swarm-manager:~/flask-redis$ docker system prune -a -f

镜像构建和提交， 如果你想做这一步，可以把docker-compose.yml里的 xiaopeng163/flask-redis 改成你的dockerhub id

  1. vagrant@swarm-manager:~/flask-redis$ docker-compose build
  2. vagrant@swarm-manager:~/flask-redis$ docker image ls
  3. REPOSITORY                TAG          IMAGE ID       CREATED         SIZE
  4. xiaopeng163/flask-redis   latest       5efb4fcbcfc3   6 seconds ago   126MB
  5. python                    3.9.5-slim   c71955050276   3 weeks ago     115MB

提交镜像到dockerhub

  1. vagrant@swarm-manager:~/flask-redis$ docker login
  2. Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
  3. Username: xiaopeng163
  4. Password:
  5. WARNING! Your password will be stored unencrypted in /home/vagrant/.docker/config.json.
  6. Configure a credential helper to remove this warning. See
  7. https://docs.docker.com/engine/reference/commandline/login/#credentials-store
  9. Login Succeeded
  10. vagrant@swarm-manager:~/flask-redis$ docker-compose push
  11. WARNING: The REDIS_PASSWORD variable is not set. Defaulting to a blank string.
  12. Pushing flask (xiaopeng163/flask-redis:latest)...
  13. The push refers to repository [docker.io/xiaopeng163/flask-redis]
  14. f447d33c161b: Pushed
  15. f7395da2fd9c: Pushed
  16. 5b156295b5a3: Layer already exists
  17. 115e0863702d: Layer already exists
  18. e10857b94a57: Layer already exists
  19. 8d418cbfaf25: Layer already exists
  20. 764055ebc9a7: Layer already exists
  21. latest: digest: sha256:c909100fda2f4160b593b4e0fb692b89046cebb909ae90546627deca9827b676 size: 1788
  22. vagrant@swarm-manager:~/flask-redis$

通过stack启动服务

  1. vagrant@swarm-manager:~/flask-redis$ env REDIS_PASSWORD=ABC123 docker stack deploy --compose-file docker-compose.yml flask-demo
  2. Ignoring unsupported options: build
  4. Creating network flask-demo_default
  5. Creating service flask-demo_flask
  6. Creating service flask-demo_redis-server
  7. vagrant@swarm-manager:~/flask-redis$
  8. vagrant@swarm-manager:~/flask-redis$ docker stack ls
  9. NAME         SERVICES   ORCHESTRATOR
  10. flask-demo   2          Swarm
  11. vagrant@swarm-manager:~/flask-redis$ docker stack ps flask-demo
  12. ID             NAME                        IMAGE                            NODE            DESIRED STATE   CURRENT STATE
  13. ERROR     PORTS
  14. lzm6i9inoa8e   flask-demo_flask.1          xiaopeng163/flask-redis:latest   swarm-manager   Running         Running 23 seconds ago
  16. ejojb0o5lbu0   flask-demo_redis-server.1   redis:latest                     swarm-worker2   Running         Running 21 seconds ago
  18. vagrant@swarm-manager:~/flask-redis$ docker stack services flask-demo
  19. ID             NAME                      MODE         REPLICAS   IMAGE                            PORTS
  20. mpx75z1rrlwn   flask-demo_flask          replicated   1/1        xiaopeng163/flask-redis:latest   *:8080->5000/tcp
  21. z85n16zsldr1   flask-demo_redis-server   replicated   1/1        redis:latest
  22. vagrant@swarm-manager:~/flask-redis$ docker service ls
  23. ID             NAME                      MODE         REPLICAS   IMAGE                            PORTS
  24. mpx75z1rrlwn   flask-demo_flask          replicated   1/1        xiaopeng163/flask-redis:latest   *:8080->5000/tcp
  25. z85n16zsldr1   flask-demo_redis-server   replicated   1/1        redis:latest
  26. vagrant@swarm-manager:~/flask-redis$ curl 127.0.0.1:8080
  27. Hello Container World! I have been seen 1 times and my hostname is 21d63a8bfb57.
  28. vagrant@swarm-manager:~/flask-redis$ curl 127.0.0.1:8080
  29. Hello Container World! I have been seen 2 times and my hostname is 21d63a8bfb57.
  30. vagrant@swarm-manager:~/flask-redis$ curl 127.0.0.1:8080
  31. Hello Container World! I have been seen 3 times and my hostname is 21d63a8bfb57.
  32. vagrant@swarm-manager:~/flask-redis$