BAD GATEWAY when I try to join a room

[bzhfloriane]

I'm trying to join the room #matrix-dev:matrix.org, but I get a 502 Bad Gateway error.
Here are my logs when I try to join this room:

2018-03-06 12:14:31,666 - synapse.access.http.8008 - 59 - INFO - GET-434- - - 8008 - Received request: GET /_matrix/client/api/v1/directory/room/%23matrix-dev%3Amatrix.org
2018-03-06 12:14:31,668 - synapse.http.outbound - 154 - INFO - GET-434- {GET-O-12} [matrix.org] Sending request: GET matrix://matrix.org/_matrix/federation/v1/query/directory?room_alias=%23matrix-dev%3Amatrix.org
2018-03-06 12:14:32,797 - synapse.handlers.typing - 78 - INFO - - Checking for typing timeouts
2018-03-06 12:14:32,797 - synapse.handlers.presence - 327 - INFO - - Handling presence timeouts
2018-03-06 12:14:32,873 - synapse.storage.TIME - 213 - INFO - - Total database time: 0.004% {get_destination_retry_timings(1): 0.003%, _update_client_ips_batch(2): 0.001%, who_forgot(0): 0.000%} {}
2018-03-06 12:14:37,796 - synapse.handlers.typing - 78 - INFO - - Checking for typing timeouts
2018-03-06 12:14:37,797 - synapse.handlers.presence - 327 - INFO - - Handling presence timeouts
2018-03-06 12:14:42,795 - synapse.handlers.typing - 78 - INFO - - Checking for typing timeouts
2018-03-06 12:14:42,797 - synapse.handlers.presence - 327 - INFO - - Handling presence timeouts
2018-03-06 12:14:42,872 - synapse.storage.TIME - 213 - INFO - - Total database time: 0.001% {_update_client_ips_batch(2): 0.001%, who_forgot(0): 0.000%, update_user_directory_stream_pos(0): 0.000%} {}
2018-03-06 12:14:42,899 - synapse.http.outbound - 236 - INFO - GET-434- {GET-O-12} [matrix.org] Result: 502 Bad Gateway
2018-03-06 12:14:42,900 - root - 188 - WARNING - GET-434- Error retrieving alias
2018-03-06 12:14:42,902 - synapse.http.server - 127 - ERROR - GET-434- 502: Bad Gateway
Traceback (most recent call last):
  File "/root/.synapse/lib/python2.7/site-packages/synapse/http/server.py", line 117, in wrapped_request_handler
    yield request_handler(self, request, request_metrics)
  File "/root/.synapse/lib/python2.7/site-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/root/.synapse/lib/python2.7/site-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/root/.synapse/lib/python2.7/site-packages/synapse/http/server.py", line 263, in _async_render
    callback_return = yield callback(request, **kwargs)
  File "/root/.synapse/lib/python2.7/site-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/root/.synapse/lib/python2.7/site-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/root/.synapse/lib/python2.7/site-packages/synapse/rest/client/v1/directory.py", line 50, in on_GET
    res = yield dir_handler.get_association(room_alias)
  File "/root/.synapse/lib/python2.7/site-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/root/.synapse/lib/python2.7/site-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/root/.synapse/lib/python2.7/site-packages/synapse/handlers/directory.py", line 185, in get_association
    ignore_backoff=True,
  File "/root/.synapse/lib/python2.7/site-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/root/.synapse/lib/python2.7/site-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/root/.synapse/lib/python2.7/site-packages/synapse/federation/transport/client.py", line 188, in make_query
    ignore_backoff=ignore_backoff,
  File "/root/.synapse/lib/python2.7/site-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/root/.synapse/lib/python2.7/site-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/root/.synapse/lib/python2.7/site-packages/synapse/http/matrixfederationclient.py", line 442, in get_json
    ignore_backoff=ignore_backoff,
  File "/root/.synapse/lib/python2.7/site-packages/twisted/internet/defer.py", line 1386, in _inlineCallbacks
    result = g.send(result)
  File "/root/.synapse/lib/python2.7/site-packages/synapse/http/matrixfederationclient.py", line 247, in _request
    response.code, response.phrase, body
HttpResponseException: 502: Bad Gateway

My conf of nginx is :

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout  65;

    server {
        listen 80;
        server_name localhost;

        location /_matrix {
            proxy_pass http://localhost:8008;
            proxy_set_header X-Forwarded-For $remote_addr;
        }
   }
}

Any help is appreciated..

[neilisfragile]

Hi @bzhfloriane is this issue persisting? Can you join other rooms?

[bzhfloriane]

@neilisfragile
Yes I still have this problem. No, I can not join any room. And I'm also trying to create a discussion with another server, but that puts me these errors :

2018-03-08 17:38:47,207 - synapse.handlers.profile - 123 - ERROR - POST-793- Failed to get displayname
Traceback (most recent call last):
  File "/root/.synapse/lib/python2.7/site-packages/synapse/handlers/profile.py", line 115, in get_displayname
    ignore_backoff=True,
ConnectionRefusedError: Connection was refused by other side: 111: Connection refused.

2018-03-08 17:38:47,515 - synapse.handlers.profile - 176 - ERROR - POST-793- Failed to get avatar_url
Traceback (most recent call last):
  File "/root/.synapse/lib/python2.7/site-packages/synapse/handlers/profile.py", line 169, in get_avatar_url
    ignore_backoff=True,
ConnectionRefusedError: Connection was refused by other side: 111: Connection refused.

2018-03-08 17:38:53,261 - synapse.http.server - 145 - ERROR - POST-793- Failed handle request synapse.http.server._async_render on <synapse.rest.ClientRestResource object at 0x53777d0>: <XForwardedForRequest at 0x5ecaa70 method=POST uri=/_matrix/client/api/v1/createRoom?access_token=<redacted> clientproto=HTTP/1.1 site=8008>: Traceback (most recent call last):
Failure: twisted.internet.error.ConnectionRefusedError: Connection was refused by other side: 111: Connection refused.

[iammer]

I am seeing this too. Did you ever find a solution?

[neilisfragile]

Can't reproduce and so struggling to debug - can you send through some recent logs?

[iammer]

@neilisfragile, I believe I had figured this out. I had misconfigured my SRV record and was pointing to the wrong port. 8448 vs 443

[Half-Shot]

@Eideen it would be better to create a new issue rather than trying to reuse a closed one. You've already created #5086, so let's use that.