text docker deploy scale swarm模式

Posted 2021-04-30

============================= app.py ==========
from flask import Flask
from redis import Redis

app = Flask(__name__)
redis = Redis(host='redis', port=6379)

@app.route('/')
def hello():
    count = redis.incr('hits')
    return 'Hello World! I have been seen {} times.\n'.format(count)

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=8000, debug=True)
============================= dockerfile ==========
FROM python:3.4-alpine
ADD . /code
WORKDIR /code
RUN pip install -r requirements.txt
CMD ["python", "app.py"]
============================= docker-compose ==========
version: '3'

services:
  webScale:
    image: 127.0.0.1:5000/dockerscale1
    build: .
    ports:
      - "8000:8000"
  redis:
    image: redis:alpine
    ports:
      - "6379:6379"
  redis-commander:
    container_name: redis-commander
    hostname: redis-commander
    image: rediscommander/redis-commander:latest
    restart: always
    environment:
    - REDIS_HOSTS=local:redis:6379
    ports:
    - "8081:8081"
============================= docker-command ==========
docker stack deploy --compose-file docker-compose.yml dockerscale1
docker stack services dockerscale1
curl http://localhost:8000
docker stack rm dockerscale1