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Nginx Docker 容器不定期停止工作

tag-icon • tag-icon nginx docker reverse-proxy docker-compose certbot
Nginx Docker 容器不定期停止工作

服务器：

我使用 Nginx 作为我的服务器的入口代理。Nginx 在 Docker 容器中运行。

docker-compose.yml：

 nginx_ingress:
    image: nginx:latest
    ports:
      - "80:80"
      - "443:443"
    networks:
      front-tier: {}
      back-tier:
        ipv4_address: 172.28.1.1
    restart: always
    volumes:
      - /var/lib/my-server/config/nginx_ingress:/etc/nginx/conf.d
      - /var/lib/my-server/data/certbot/conf:/etc/letsencrypt
      - /var/lib/my-server/data/certbot/www:/var/www/certbot
    command: "/bin/sh -c 'while :; do sleep 6h & wait $${!}; nginx -s reload; done & nginx -g \"daemon off;\"'"

由于我使用另一个容器管理多个证书，因此我希望 Nginx 每 6 小时正常重新加载一次配置。

我的想法是，我可以用另一个容器独立管理我的所有证书。我不想在我的主机上运行任何东西（没有 cronjob），也不想将我的 nginx-proxy-container 与我的证书容器结合起来。我希望拼图的每一部分都能独立运行。（我从这个教程中得到了这个想法：https://pentacent.medium.com/nginx-and-lets-encrypt-with-docker-in-less-than-5-minutes-b4b8a60d3a71）

问题：

有时代理（nginx）会停止工作。但 Docker 容器本身仍在运行。

日志显示以下内容：

...
2021/10/25 05:51:42 [notice] 1#1: signal 3 (SIGQUIT) received, shutting down
2021/10/25 05:51:42 [notice] 12#12: gracefully shutting down
2021/10/25 05:51:42 [notice] 12#12: exiting
2021/10/25 05:51:42 [notice] 13#13: gracefully shutting down
2021/10/25 05:51:42 [notice] 12#12: exit
2021/10/25 05:51:42 [notice] 13#13: exiting
2021/10/25 05:51:42 [notice] 13#13: exit
2021/10/25 05:51:42 [notice] 1#1: signal 17 (SIGCHLD) received from 12
2021/10/25 05:51:42 [notice] 1#1: worker process 12 exited with code 0
2021/10/25 05:51:42 [notice] 1#1: worker process 13 exited with code 0
2021/10/25 05:51:42 [notice] 1#1: exit
2021/10/25 05:51:44 [notice] 1#1: using the "epoll" event method
2021/10/25 05:51:44 [notice] 1#1: nginx/1.21.3
2021/10/25 05:51:44 [notice] 1#1: built by gcc 8.3.0 (Debian 8.3.0-6) 
2021/10/25 05:51:44 [notice] 1#1: OS: Linux 5.4.0-86-generic
2021/10/25 05:51:44 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
2021/10/25 05:51:44 [notice] 1#1: start worker processes
2021/10/25 05:51:44 [notice] 1#1: start worker process 9
2021/10/25 05:51:44 [notice] 1#1: start worker process 10

和有时我的意思是有时。到目前为止我还没找出任何规律。一开始我以为 Nginx 每 6 小时关闭一次，原因是command。但似乎情况并非如此。我将睡眠时间减少到 2 分钟，Nginx 继续正常运行了几个小时。然后我再次将睡眠时间设置为 6 小时，6 小时后 Nginx 停止工作（参见上面的日志）。我重新启动了 Docker 容器，从那时起 Nginx 就开始运行（现在已经过去了 24 多个小时）。正如您在以下日志中看到的那样，在大多数情况下，Nginx 重新加载工作正常：

...
2021/10/25 11:51:44 [notice] 19#19: signal process started
2021/10/25 11:51:44 [notice] 1#1: signal 1 (SIGHUP) received from 19, reconfiguring
2021/10/25 11:51:44 [notice] 1#1: reconfiguring
2021/10/25 11:51:44 [notice] 1#1: using the "epoll" event method
2021/10/25 11:51:44 [notice] 1#1: start worker processes
2021/10/25 11:51:44 [notice] 1#1: start worker process 21
2021/10/25 11:51:44 [notice] 1#1: start worker process 22
2021/10/25 11:51:44 [notice] 10#10: gracefully shutting down
2021/10/25 11:51:44 [notice] 9#9: gracefully shutting down
2021/10/25 11:51:44 [notice] 10#10: exiting
2021/10/25 11:51:44 [notice] 9#9: exiting
2021/10/25 11:51:44 [notice] 9#9: exit
2021/10/25 11:51:44 [notice] 10#10: exit
2021/10/25 11:51:44 [notice] 1#1: signal 17 (SIGCHLD) received from 10
2021/10/25 11:51:44 [notice] 1#1: worker process 9 exited with code 0
2021/10/25 11:51:44 [notice] 1#1: worker process 10 exited with code 0
2021/10/25 11:51:44 [notice] 1#1: signal 29 (SIGIO) received
...

...
2021/10/25 17:51:44 [notice] 23#23: signal process started
2021/10/25 17:51:44 [notice] 1#1: signal 1 (SIGHUP) received from 23, reconfiguring
2021/10/25 17:51:44 [notice] 1#1: reconfiguring
2021/10/25 17:51:44 [notice] 1#1: using the "epoll" event method
2021/10/25 17:51:44 [notice] 1#1: start worker processes
2021/10/25 17:51:44 [notice] 1#1: start worker process 25
2021/10/25 17:51:44 [notice] 1#1: start worker process 26
2021/10/25 17:51:44 [notice] 22#22: gracefully shutting down
2021/10/25 17:51:44 [notice] 21#21: gracefully shutting down
2021/10/25 17:51:44 [notice] 21#21: exiting
2021/10/25 17:51:44 [notice] 22#22: exiting
2021/10/25 17:51:44 [notice] 21#21: exit
2021/10/25 17:51:44 [notice] 22#22: exit
2021/10/25 17:51:44 [notice] 1#1: signal 17 (SIGCHLD) received from 21
2021/10/25 17:51:44 [notice] 1#1: worker process 21 exited with code 0
2021/10/25 17:51:44 [notice] 1#1: signal 29 (SIGIO) received
2021/10/25 17:51:44 [notice] 1#1: signal 17 (SIGCHLD) received from 22
2021/10/25 17:51:44 [notice] 1#1: worker process 22 exited with code 0
2021/10/25 17:51:44 [notice] 1#1: signal 29 (SIGIO) received
...

我的问题：

  1. 我使用的有什么问题吗command？Nginx 停止后容器是否也应该停止？（也许是主进程出了问题？）
  2. 为什么 Nginx 只会不定期停止？为什么不是每 6 小时一次？你看到第一条日志和第二条/第三条日志之间有什么区别吗？
  3. 您还有其他建议吗？关于如何让 Nginx 自行重新加载？（如上所述，我不想在主机上放置任何东西 + 如果没有必要，我不想组合 nginx 和 certbot 容器......）

感谢您的帮助！

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