快速搭建编排上线项目实例

# 新建一个项目目录
mkdir -p composetest
vim app.py
# app.py
import time
import redis
from flask import Flask

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

def get_hit_count():
    retries = 5
    while True:
        try:
            return cache.incr('hits')
        except redis.exceptions.ConnectionError as exc:
            if retries == 0:
                raise exc
            retries -= 1
            time.sleep(0.5)

@app.route('/')
def hello():
    count = get_hit_count()
    return 'Hello World! I have been seen {} times.\n'.format(count)
# Esc :wq
# 书写requirements.txt
flask
redis

# other app.pyimport timeimport redisfrom flask import Flask

app = Flask(__name__)
cache = redis.Redis(host='redis', port=6379)def get_hit_count():
    retries = 5
    while True:        try:            return cache.incr('hits')        except redis.exceptions.ConnectionError as exc:            if retries == 0:                raise exc
            retries -= 1
            time.sleep(0.5)@app.route('/')def hello():
    count = get_hit_count()    return 'Hello World! I have been seen {} times.\n'.format(count)if __name__ == "__main__":
    app.run(host="0.0.0.0", debug=True)

vim Dockerfile
# Dockerfile
FROM python:3.7-alpine
WORKDIR /code
ENV FLASK_APP=app.py
ENV FLASK_RUN_HOST=0.0.0.0
RUN apk add --no-cache gcc musl-dev linux-headers
COPY requirements.txt requirements.txt
RUN pip install -r requirements.txt
EXPOSE 5000
COPY . .
CMD ["flask", "run"]
# Esc :wq

# other Dockerfile
FROM python:3.7-alpine
ADD　. /code
WORKDIR /code
RUN pip install -r requirements.txt
CMD ["python", "app.py"]
# Esc :wq

vim docker-compose.yaml# docker-compose.yamlversion: "3.8"services:
  web:
    build: .
    ports:
      - "5000:5000"
  redis:
    image: "redis:alpine"
 # Esc :wq

# other docker-compose.yaml
version: "3.8"
services:
  web:
    build: .
    ports:
      - "5000:5000"
    volumes:
      - .:/code
  redis:
    image: "redis:alpine"

docker-compose up

# other app.py
import time
import redis
from flask import Flask

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

def get_hit_count():
    retries = 5
    while True:
        try:
            return cache.incr('hits')
        except redis.exceptions.ConnectionError as exc:
            if retries == 0:
                raise exc
            retries -= 1
            time.sleep(0.5)

@app.route('/')
def hello():
    count = get_hit_count()
    return 'Hello World! I have been seen {} times.\n'.format(count)
if __name__ == "__main__":
    app.run(host="0.0.0.0", debug=True)

FROM python:3.7-alpine
ADD　. /code
WORKDIR /code
RUN pip install -r requirements.txt
CMD ["python", "app.py"]

version: "3.8"
services:
  web:
    build: .
    ports:
      - "5000:5000"
    volumes:
      - .:/code
  redis:
    image: "redis:alpine"