Nuxtjs failed: Error during WebSocket handshake: Unexpected response code: 500 - nginx

I setup my nuxt on centOs 7 and I use nginx as server when I run npm run dev on server and open chrome it show me in console this:
WebSocket connection to 'wss://www.mydomain.com/_loading/ws' failed: Error during WebSocket handshake: Unexpected response code: 500
and try to reconnect again then same error show,
what is the problem?
is it caused by nginx or nuxtjs ?


I detected the issue,
It was caused by centOs server it needs to upgrade its kernel
I do upgrade the centOs and upgrade its kernel and every thing seems Okay

Related

error while running jupyter notebook: The requested URL could not be retrieved

I am using ubuntu 20.04
I have got error while running jupyter notebook:
ERROR
The requested URL could not be retrieved
The following error was encountered while trying to retrieve the URL: http://localhost:8888/tree?
Connection to 127.0.0.1 failed.
The system returned: (111) Connection refused
The remote host or network may be down. Please try the request again.

SFTP connection failure with error code -43

I am tying to connect to sftp server via testapp using curl_7.74 and libssh2_1.8.2. this working in ubuntu 16.04 desktop but not on my embedded environment.
following error is thrown
root#phyboard-segin-imx6ul-2:~# ./sftptest
st.st_size:[0]
Trying 115.249.3.130:2222...
Connected to sftp-xxxxxxxx.mydomain.net (xxx.249.3.130) port 2222 (#0)
Failure establishing ssh session: -43, Failed getting banner
Closing connection 0
curl told us 2
somebody pls throw some light on it :)

Got Connect Failed error when request to tf serving server,and it's all good in windows

I make a server and request successfully in windows,then I put them to the linux which is the develop machine of company.
And I Got Connect Failed error when I run the clien.py. I have changed the host IP to localhost,0.0.0.0,127.0.0.1 and the IP of develop machine,but it doesn't work.
And I tried the docker inspect command,but the IPAddress is empty like "".
And I changed the port to 8500,8501,4321 and still got the error.
I tried make proxy to the company,the request returns a Name resolution failure error.So I think maybe the cause is the net of company?
Any answer would be very appreciate!
The Error Message:
grpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with:
status = StatusCode.UNAVAILABLE
details = "Connect Failed"
debug_error_string = "{"created":"#1551677753.381330483","description":"Failed to create subchannel","file":"src/core/ext/filters/client_channel/client_channel.cc","file_line":2721,"referenced_errors":[{"created":"#1551677753.381328206","description":"Pick Cancelled","file":"src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc","file_line":241,"referenced_errors":[{"created":"#1551677753.381303114","description":"Connect Failed","file":"src/core/ext/filters/client_channel/subchannel.cc","file_line":689,"grpc_status":14,"referenced_errors":[{"created":"#1551677753.381278484","description":"Failed to connect to remote host: OS Error","errno":111,"file":"src/core/lib/iomgr/tcp_client_posix.cc","file_line":205,"os_error":"Connection refused","syscall":"connect","target_address":"ipv4:0.0.0.0:8501"}]}]}]}"

SocketException: Connection failed (OS Error: Network is unreachable, errno = 101), address = 18.191.190.195, port = 80

Flutter/Dart
Why does http.get('http://18.191.190.195/') throw above error while using chrome browser http://18.191.190.195/ shows the Test Page and says:
If you can read this page, it means that the Apache HTTP server installed at this site is working properly.

Cause: Poor network connection.
Suggestion: Error reporting should be more descriptive from Dart.

Kibana - socket hang up error

I am running Kibana behind IIS reverse proxy server and getting following error
Courier Fetch Error: unhandled courier request error: socket hang up
I am on Version: 4.2.2, Build: 9177.
I get this error only when I use proxy server which I need to restrict access to Kibana. I am not sure what is causing this or how to fix it.
Error: unhandled courier request error: socket hang up
at handleError (http://kibana-server/bundles/kibana.bundle.js:70047:23)
at DocRequest.AbstractReqProvider.AbstractReq.handleFailure (http://kibana-server/bundles/kibana.bundle.js:69967:15)
at http://kibana-server/bundles/kibana.bundle.js:69861:18
at Array.forEach (native)
at http://kibana-server/bundles/kibana.bundle.js:69859:19
at wrappedErrback (http://kibana-server/bundles/commons.bundle.js:39286:79)
at http://kibana-server/bundles/commons.bundle.js:39419:77
at Scope.$eval (http://kibana-server/bundles/commons.bundle.js:40406:29)
at Scope.$digest (http://kibana-server/bundles/commons.bundle.js:40218:32)
at Scope.$apply (http://kibana-server/bundles/commons.bundle.js:40510:25)

If you have enabled Integrated Windows Authentication in your IIS the Kibana server cannot process the request, because the http-Authorization-Header is too large (group memberships are stored in the PAC field of the kerberos tickets).
We had the same Problem with an Apache reverse proxy server in front of Kibana. The solution is to unset the Authorization-Header after Kerberos/NTLM-Authentication is done and before sending the proxy request to Kibana.
Configuration for Apache:
RequestHeader unset Authorization

Try removing http.cors and http.compression as noted in https://github.com/elastic/kibana/issues/6719

Resources