Users receive proxy error when trying to login to confluence/jira

[Shirley He]

Several users have reported that they get this error after trying to login to jira/confluence:

Proxy Error

The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request POST /jira/login.jsp.

Reason: Error reading from remote server

I don't get this error, nor do the people in my office, how ever the offices located elsewhere (i.e. in Europe, I am located in North America) are getting this error. After 30 minutes the problem goes away by itself, but this affects the work flow and I want to know why this error is happening and how I can fix it.

[Moses Thomas · Accepted solution]

@Shirley HeFirst of all  what  kind of reverse proxy  are you  using?  nginx, apache ?

[Shirley He]

I believe it's apache

[Moses Thomas]

@Shirley HeSo  let me explain

When  request  comes from a client(Europe)  it goes to  Reverse Proxy  apache,  then reverse  proxy apache proxied  request to  back-end server   handles request, generate content and   send content back  to   reverse proxy(apache hppd)  which  now generates HTTP(hyper text transfer protocol) response  back to  client(Europe)

Now there could be Firewall between  Internet/cloud(request)  and  proxy server(apache http)  and also  Firewall  between   back-end server and  reverse proxy(apache hppd).  From your  error i can see that   fire wall  is blocking   back-end server  from  sending  content  back to  reverse proxy.   so  please allow firewall  to  accept traffic  from back-end server  this  will  Fix your issue.

I hope this helps.

Best!