swarm stack 部署多 service 应用#
先在swarm manager节点上安装一下 docker-compose
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
vagrant@swarm-manager:~$ sudo chmod +x /usr/local/bin/docker-compose
clone我们的代码仓库
vagrant@swarm-manager:~$ git clone https://github.com/xiaopeng163/flask-redis
Cloning into 'flask-redis'...
remote: Enumerating objects: 22, done.
remote: Counting objects: 100% (22/22), done.
remote: Compressing objects: 100% (19/19), done.
remote: Total 22 (delta 9), reused 7 (delta 2), pack-reused 0
Unpacking objects: 100% (22/22), 8.60 KiB | 1.07 MiB/s, done.
vagrant@swarm-manager:~$ cd flask-redis
vagrant@swarm-manager:~/flask-redis$ ls
Dockerfile LICENSE README.md app.py docker-compose.yml
vagrant@swarm-manager:~/flask-redis$
环境清理
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
vagrant@swarm-manager:~/flask-redis$ docker-compose build
vagrant@swarm-manager:~/flask-redis$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
xiaopeng163/flask-redis latest 5efb4fcbcfc3 6 seconds ago 126MB
python 3.9.5-slim c71955050276 3 weeks ago 115MB
提交镜像到dockerhub
vagrant@swarm-manager:~/flask-redis$ docker login
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.
Username: xiaopeng163
Password:
WARNING! Your password will be stored unencrypted in /home/vagrant/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
vagrant@swarm-manager:~/flask-redis$ docker-compose push
WARNING: The REDIS_PASSWORD variable is not set. Defaulting to a blank string.
Pushing flask (xiaopeng163/flask-redis:latest)...
The push refers to repository [docker.io/xiaopeng163/flask-redis]
f447d33c161b: Pushed
f7395da2fd9c: Pushed
5b156295b5a3: Layer already exists
115e0863702d: Layer already exists
e10857b94a57: Layer already exists
8d418cbfaf25: Layer already exists
764055ebc9a7: Layer already exists
latest: digest: sha256:c909100fda2f4160b593b4e0fb692b89046cebb909ae90546627deca9827b676 size: 1788
vagrant@swarm-manager:~/flask-redis$
通过stack启动服务
vagrant@swarm-manager:~/flask-redis$ env REDIS_PASSWORD=ABC123 docker stack deploy --compose-file docker-compose.yml flask-demo
Ignoring unsupported options: build
Creating network flask-demo_default
Creating service flask-demo_flask
Creating service flask-demo_redis-server
vagrant@swarm-manager:~/flask-redis$
vagrant@swarm-manager:~/flask-redis$ docker stack ls
NAME SERVICES ORCHESTRATOR
flask-demo 2 Swarm
vagrant@swarm-manager:~/flask-redis$ docker stack ps flask-demo
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE
ERROR PORTS
lzm6i9inoa8e flask-demo_flask.1 xiaopeng163/flask-redis:latest swarm-manager Running Running 23 seconds ago
ejojb0o5lbu0 flask-demo_redis-server.1 redis:latest swarm-worker2 Running Running 21 seconds ago
vagrant@swarm-manager:~/flask-redis$ docker stack services flask-demo
ID NAME MODE REPLICAS IMAGE PORTS
mpx75z1rrlwn flask-demo_flask replicated 1/1 xiaopeng163/flask-redis:latest *:8080->5000/tcp
z85n16zsldr1 flask-demo_redis-server replicated 1/1 redis:latest
vagrant@swarm-manager:~/flask-redis$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
mpx75z1rrlwn flask-demo_flask replicated 1/1 xiaopeng163/flask-redis:latest *:8080->5000/tcp
z85n16zsldr1 flask-demo_redis-server replicated 1/1 redis:latest
vagrant@swarm-manager:~/flask-redis$ curl 127.0.0.1:8080
Hello Container World! I have been seen 1 times and my hostname is 21d63a8bfb57.
vagrant@swarm-manager:~/flask-redis$ curl 127.0.0.1:8080
Hello Container World! I have been seen 2 times and my hostname is 21d63a8bfb57.
vagrant@swarm-manager:~/flask-redis$ curl 127.0.0.1:8080
Hello Container World! I have been seen 3 times and my hostname is 21d63a8bfb57.
vagrant@swarm-manager:~/flask-redis$