前情提要：花了大半天成功部署上jupyter，结果发现不能执行代码单元，继续折腾..

问题描述

1. 前端jupyer lab界面执行代码单元无响应，且提示Kernel status:Disconnected
2. 后台jupyter容器日志提示400报错

docker logs -f 容器id

400 GET /api/kernels/9506be3c-2544-4ab9-b9af-b2a1c51a1402/...

解决方法

1. 修改nginx配置，在配置中增加如下内容：

map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

auth_basic "Restricted Content";
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_set_header Origin "";
proxy_read_timeout 86400;

完整配置文件为

upstream my-notebook-workhorse {
  server 127.0.0.1:8888 fail_timeout=0;
}

map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

# let my-notebook deal with the redirection
server {
  listen                    80;
  server_name               my-notebook.wh;
  server_tokens             off;
  root                      /dev/null;

  # Increase this if you want to upload larger attachments
  client_max_body_size      20m;

  # individual nginx logs for this vhost
  access_log                /var/log/nginx/my-notebook_access.log;
  error_log                 /var/log/nginx/my-notebook_error.log;

  location / {
    proxy_pass http://my-notebook-workhorse;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded_For $proxy_add_x_forwarded_for;
    proxy_set_header X-NginX-Proxy true;
    auth_basic "Restricted Content";

    # WebSocket support
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;
    proxy_set_header Origin "";
    proxy_read_timeout 86400;
  }
}

2. 重新启动nginx后再次执行代码单元格运行正常

docker-compose restart nginx

Reference

https://stackoverflow.com/questions/42350182/jupyter-notebook-keeps-reconnecting-to-kernel