ryo*_*ake 2 nginx docker dockerfile docker-compose fastapi
它是快速的 api 和 nginx 模板，但目前它不能按我的预期工作。\n当你卷曲本地主机时，它响应 502 bad gateway instaed of hello world 这是在 main.py 中定义的...
\ndocker 日志 web 显示connect() failed (111: Connection refused) while connecting to upstream, client: 172.27.0.1, server:在 nginx 容器中。
但为什么 ？？你如何修复这个错误？
\n.\n\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 Dockerfile\n\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 README.md\n\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 docker-compose.yml\n\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 main.py\n\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 nginx\n\xe2\x94\x82\xc2\xa0\xc2\xa0 \xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 Dockerfile\n\xe2\x94\x82\xc2\xa0\xc2\xa0 \xe2\x94\x94\xe2\x94\x80\xe2\x94\x80 nginx.conf\n\xe2\x94\x94\xe2\x94\x80\xe2\x94\x80 requirements.txt\ndocker-compose up -d --build
docker logs ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES\ncb79d9efaf75 fast-api-nginx-template_web "/docker-entrypoint.\xe2\x80\xa6" 4 minutes ago Up 4 minutes 0.0.0.0:80->80/tcp, :::80->80/tcp web\n6b049c395508 fast-api-nginx-template_api "uvicorn main:app --\xe2\x80\xa6" 4 minutes ago Up 4 minutes 0.0.0.0:8000->8000/tcp, :::8000->8000/tcp api\ncurl localhost<html>\n<head><title>502 Bad Gateway</title></head>\n<body>\n<center><h1>502 Bad Gateway</h1></center>\n<hr><center>nginx/1.21.1</center>\n</body>\n</html>\ndocker logs web/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration\n/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh\n10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf\n10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh\n/docker-entrypoint.sh: Configuration complete; ready for start up\n2021/08/28 13:58:37 [error] 31#31: *8 connect() failed (111: Connection refused) while connecting to upstream, client: 172.27.0.1, server: 127.0.0.1, request: "GET / HTTP/1.1", upstream: "http://172.27.0.3:8000/", host: "localhost"\n172.27.0.1 - - [28/Aug/2021:13:58:37 +0000] "GET / HTTP/1.1" 502 157 "-" "curl/7.64.1"\ndocker logs apiINFO: Started server process [1]\nINFO: Waiting for application startup.\nINFO: Application startup complete.\nINFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)\ndocker 撰写
\nversion: "3.9"\nservices:\n web:\n container_name: web\n build: nginx\n ports:\n - 80:80\n depends_on:\n - api\n networks:\n - local-net\n api:\n container_name: api\n build: .\n ports:\n - 8000:8000\n networks:\n - local-net\n expose:\n - 8000\nnetworks:\n local-net:\n driver: bridge\nnginx/Dockerfile
\nFROM nginx\nRUN apt-get update \nCOPY nginx.conf /etc/nginx/nginx.conf\nnginx/nginx.conf
\nworker_processes 1;\n\nevents {\n worker_connections 1024; \n accept_mutex off; \n use epoll;\n}\n\nhttp {\n include mime.types;\n upstream app_serve {\n server web:8000;\n }\n access_log /var/log/nginx/access.log;\n error_log /var/log/nginx/error.log;\n server {\n listen 80 ipv6only=on;\n server_name 127.0.0.1; \n location / {\n proxy_pass http://app_serve; \n proxy_set_header Host $host;\n proxy_set_header X-Real-IP $remote_addr;\n proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n proxy_set_header X-Forwarded-Proto $scheme;\n }\n }\n}\nDockerfile
\nARG BASE_IMAGE=python:3.8-buster \nFROM $BASE_IMAGE \n\nRUN apt-get -y update && \\ \n apt-get install -y --no-install-recommends \\ \n build-essential \\ \n openssl libssl-dev \\ \n && apt-get clean \\ \n && rm -rf /var/lib/apt/lists/* \n\nARG USER_NAME=app\nARG USER_UID=1000\nARG PASSWD=password\n\nRUN useradd -m -s /bin/bash -u $USER_UID $USER_NAME && \\\n gpasswd -a $USER_NAME sudo && \\\n echo "${USER_NAME}:${PASSWD}" | chpasswd && \\\n echo "${USER_NAME} ALL=(ALL) ALL" >> /etc/sudoers\n\nCOPY ./ /app\nRUN chown -R ${USER_NAME}:${USER_NAME} /app\n\nUSER $USER_NAME\nWORKDIR /app\nENV PATH $PATH:/home/${USER_NAME}/.local/bin\n\nRUN pip3 install --user --upgrade pip \nRUN pip3 install --user -r requirements.txt\nRUN rm -rf ~/.cache/pip/* \n\nEXPOSE 8000\n\n# Execute\nCMD ["uvicorn", "main:app", "--host", "127.0.0.1" ,"--port" ,"8000"]\n主要.py
\nfrom typing import Optional\nfrom fastapi import FastAPI\n\napp = FastAPI()\n\n@app.get("/")\ndef load_root():\n return {"Hello": "World"}\n\n@app.get("/items/{item_id}")\ndef load_item(item_id: int, q: Optional[str] = None):\n return {"item_id": item_id, "q": q}\n\n乍一看，我认为这是因为你已经将 uvicorn 绑定到了127.0.0.1，因此，你需要在 api 容器中添加一个反向代理，以便在外部提供服务（除非你的容器在主机网络中运行，但默认情况下它是一个桥接器） ）。
绑定 uvicorn 应该0.0.0.0可以解决这个问题。更具体地说：
CMD ["uvicorn", "main:app", "--host", "0.0.0.0" ,"--port" ,"8000"]
为了确认这一点，我在 和 中运行了我的 fastapi0.0.0.0容器127.0.0.1：
$ podman ps --no-trunc
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7121420b401ee1803474ff156280a5b5b154c55ae0fd47e1976d8fe9e5331c72 localhost/fastapi-mvc-template:test /usr/bin/fastapi serve --host 127.0.0.1 4 minutes ago Up 4 minutes ago 0.0.0.0:8000->8000/tcp test
dd35d89f161f818e5b34c138bd3d42bdb4d84100b76999d4fc2444c7d0d1a1d9 localhost/fastapi-mvc-template:0.1.0 /usr/bin/fastapi serve --host 0.0.0.0 2 minutes ago Up 2 minutes ago 0.0.0.0:9000->8000/tcp test_ok
$ curl localhost:8000/api/ready
curl: (56) Recv failure: Connection reset by peer
$ curl localhost:9000/api/ready
{"status":"ok"}
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