Graylog: Messages not shown

[jeusdi]

I’ve deployed my graylog instance:

$ docker container list                                                                                                                                                                              
CONTAINER ID        IMAGE                                                      COMMAND                  CREATED             STATUS                 PORTS                                                                                                                        NAMES
90db8f4d0136        graylog/graylog:4.0                                        "/usr/bin/tini -- wa…"   3 hours ago         Up 3 hours (healthy)   0.0.0.0:1514->1514/tcp, 0.0.0.0:9000->9000/tcp, 0.0.0.0:1514->1514/udp, 0.0.0.0:12201->12201/tcp, 0.0.0.0:12201->12201/udp   load-testing_graylog_1
fe5e194a0a23        mongo:4.2                                                  "docker-entrypoint.s…"   3 hours ago         Up 3 hours             27017/tcp                                                                                                                    load-testing_mongo_1
92a29f79f9b4        docker.elastic.co/elasticsearch/elasticsearch-oss:7.10.2   "/tini -- /usr/local…"   3 hours ago         Up 3 hours             9200/tcp, 9300/tcp                                                                                                           load-testing_elasticsearch_1

As you can see, it’s listening at:

0.0.0.0:1514->1514/tcp, 0.0.0.0:9000->9000/tcp, 0.0.0.0:1514->1514/udp, 0.0.0.0:12201->12201/tcp, 0.0.0.0:12201->12201/udp

I’ve also tested it using:

curl -i -X POST -H 'Content-Type: application/json' -d '{ "version": "1.1", "host": "example.org", "short_message": "A short message", "level": 5, "_some_info": "foo" }' 'http://localhost:12201/gelf'
HTTP/1.1 202 Accepted
content-length: 0
connection: keep-alive

As you can see, I’m receiving an `HTTP/1.1 202 Accepted``.

Nevertheless, I d’ont quite figure out why I’m not able to see logs I’ve sent.

Any ideas?