Ingress-nginx-套接字挂断，connResetException？

如何解决Ingress-nginx-套接字挂断，connResetException？

我的系统：使用microk8s kubectl的Ubuntu

我正在上在线课程，遇到了找不到解决方案的问题。我无法在应用程序内部访问以下URL

http://ingress-nginx-controller.ingress-nginx.svc.cluster.local

我的网络浏览器出现以下错误

"page": "/","query": {},"buildId": "development","isFallback": false,"err": {"name": "Error","message": "socket hang up","stack": "Error: socket hang up at connResetException (internal/errors.js:613:14) at Socket.socketOnEnd (_http_client.js:493:23) at Socket.emit (events.js:326:22) at endReadableNT (_stream_readable.js:1226:12) at processTicksAndRejections (internal/process/task_queues.js:80:21)"},"gip": true

然后在节点上得到以下转储。

[client] Error: socket hang up
[client]     at connResetException (internal/errors.js:613:14)
[client]     at Socket.socketOnEnd (_http_client.js:493:23)
[client]     at Socket.emit (events.js:326:22)
[client]     at endReadableNT (_stream_readable.js:1226:12)
[client]     at processTicksAndRejections (internal/process/task_queues.js:80:21) {
[client]   code: 'ECONNRESET',[client]   config: {
[client]     url: 'http://ingress-nginx-controller.ingress-nginx.svc.cluster.local/api/users/currentuser',[client]     method: 'get',[client]     headers: {
[client]       Accept: 'application/json,text/plain,*/*',[client]       Host: 'tickets.dev',[client]       'User-Agent': 'axios/0.19.2'
[client]     },[client]     transformRequest: [ [Function: transformRequest] ],[client]     transformResponse: [ [Function: transformResponse] ],[client]     timeout: 0,[client]     adapter: [Function: httpAdapter],[client]     xsrfCookieName: 'XSRF-TOKEN',[client]     xsrfHeaderName: 'X-XSRF-TOKEN',[client]     maxContentLength: -1,[client]     validateStatus: [Function: validateStatus],[client]     data: undefined
[client]   },[client]   request: <ref *1> Writable {
[client]     _writableState: WritableState {
[client]       objectMode: false,[client]       highWaterMark: 16384,[client]       finalCalled: false,[client]       needDrain: false,[client]       ending: false,[client]       ended: false,[client]       finished: false,[client]       destroyed: false,[client]       decodeStrings: true,[client]       defaultEncoding: 'utf8',[client]       length: 0,[client]       writing: false,[client]       corked: 0,[client]       sync: true,[client]       bufferProcessing: false,[client]       onwrite: [Function: bound onwrite],[client]       writecb: null,[client]       writelen: 0,[client]       afterWriteTickInfo: null,[client]       buffered: [],[client]       bufferedIndex: 0,[client]       allBuffers: true,[client]       allNoop: true,[client]       pendingcb: 0,[client]       prefinished: false,[client]       errorEmitted: false,[client]       emitClose: true,[client]       autoDestroy: true,[client]       errored: false,[client]       closed: false
[client]     },[client]     _events: [Object: null prototype] {
[client]       response: [Function: handleResponse],[client]       error: [Function: handleRequestError]
[client]     },[client]     _eventsCount: 2,[client]     _maxListeners: undefined,[client]     _options: {
[client]       protocol: 'http:',[client]       maxRedirects: 21,[client]       maxBodyLength: 10485760,[client]       path: '/api/users/currentuser',[client]       method: 'GET',[client]       headers: [Object],[client]       agent: undefined,[client]       agents: [Object],[client]       auth: undefined,[client]       hostname: 'ingress-nginx-controller.ingress-nginx.svc.cluster.local',[client]       port: null,[client]       nativeProtocols: [Object],[client]       pathname: '/api/users/currentuser'
[client]     },[client]     _redirectCount: 0,[client]     _redirects: [],[client]     _requestBodyLength: 0,[client]     _requestBodyBuffers: [],[client]     _onNativeResponse: [Function (anonymous)],[client]     _currentRequest: ClientRequest {
[client]       _events: [Object: null prototype],[client]       _eventsCount: 6,[client]       _maxListeners: undefined,[client]       outputData: [],[client]       outputSize: 0,[client]       writable: true,[client]       _last: true,[client]       chunkedEncoding: false,[client]       shouldKeepAlive: false,[client]       useChunkedEncodingByDefault: false,[client]       sendDate: false,[client]       _removedConnection: false,[client]       _removedContLen: false,[client]       _removedTE: false,[client]       _contentLength: 0,[client]       _hasBody: true,[client]       _trailer: '',[client]       finished: true,[client]       _headerSent: true,[client]       socket: [Socket],[client]       _header: 'GET /api/users/currentuser HTTP/1.1\r\n' +
[client]         'Accept: application/json,*/*\r\n' +
[client]         'Host: tickets.dev\r\n' +
[client]         'User-Agent: axios/0.19.2\r\n' +
[client]         'Connection: close\r\n' +
[client]         '\r\n',[client]       _onPendingData: [Function: noopPendingOutput],[client]       agent: [Agent],[client]       socketPath: undefined,[client]       maxHeaderSize: undefined,[client]       insecureHTTPParser: undefined,[client]       _ended: false,[client]       res: null,[client]       aborted: false,[client]       timeoutCb: null,[client]       upgradeOrConnect: false,[client]       parser: null,[client]       maxHeadersCount: null,[client]       reusedSocket: false,[client]       host: 'ingress-nginx-controller.ingress-nginx.svc.cluster.local',[client]       protocol: 'http:',[client]       _redirectable: [Circular *1],[client]       [Symbol(kCapture)]: false,[client]       [Symbol(kNeedDrain)]: false,[client]       [Symbol(corked)]: 0,[client]       [Symbol(kOutHeaders)]: [Object: null prototype]
[client]     },[client]     _currentUrl: 'http://ingress-nginx-controller.ingress-nginx.svc.cluster.local/api/users/currentuser',[client]     [Symbol(kCapture)]: false
[client]   },[client]   response: undefined,[client]   isAxiosError: true,[client]   toJSON: [Function (anonymous)]
[client] }

我的ingress-nginx服务

NAME                                 TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
ingress-nginx-controller             LoadBalancer   10.152.183.138   <pending>     80:32160/TCP,443:30735/TCP   32d
ingress-nginx-controller-admission   ClusterIP      10.152.183.198   <none>        443/TCP                      32d

项目源代码

https://gitlab.com/emendoza1986/ticketingapp_microservicecourse

这是称为链接https://gitlab.com/emendoza1986/ticketingapp_microservicecourse/-/blob/master/client/api/build-client.js的源页面http://ingress-nginx-controller.ingress-nginx.svc.cluster.local，作为一个临时*补丁，我直接路由到需要http：// auth-srv：3000才能继续的服务课程。

解决方法

Error socket hang up错误总是表示服务器由于各种原因关闭了连接（无法及时处理请求，或在处理请求时遇到一些错误等）。

检查您使用的库是否没有像pm.sendRequest()那样异步发送请求。

尝试设置Connection: keep-alive标头。 在服务器端，通过将keepAliveTimeout设置为0来禁用它。 另一个解决方案是关闭小于keepAliveTimeout值的空闲套接字（默认情况下为5秒）。默认的http代理不支持这种功能（timeout设置不支持此功能）。因此，请使用agentkeepalive lib

const HttpsAgent = require('agentkeepalive').HttpsAgent;

const agent = new HttpsAgent({
    freeSocketTimeout: 5000
});

更多信息：connection-hang-up。

如果您使用 require('http') 来使用 https 服务，并且显示的是“ socket hang up ”。

>

尝试将 require('http') 更改为 require('https') ，并且它可以正常工作。

查看更多：socket-hang-up。 有用的博客：solutions-to-socket-hang-up。

总的来说，在群集内部内部使用入口服务并不常见。入口资源旨在管理对内部服务的外部访问。

请注意，这也是一个安全问题，因为您要在外部公开auth服务（UI层使用的后端服务）。

您的网络负载平衡器有待处理的External IP。

metalK附带MicroK8s，您可以这样启用它：

microk8s enable metallb

然后应将其转换为实际的IP地址。

看看：kubernetes-ingress-nginx-routing-error，http-request_processing。