Jupyter的Nginx反向代理配置

nginx使用反向代理时，通过master节点IP访问node节点的jupyter，需要额外配置

jupyter 使用了 websocket 协议，所以需要配置支持 websocket。

# server前先加一段配置，websocket client请求头自带http_upgrade,映射成connection_upgrade
map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}
server {
    listen    8030;
    location / {
        proxy_pass http://10.88.222.52:8111;
        # 启用支持websocket连接，nginx的功能
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_set_header Host $http_host;
        proxy_http_version 1.1;
    }
}