Elastic Observability Engineer Lab error

Elastic Community and Ecosystem Elastic Training
1

Course: Elastic Observability Engineer On-Demand
Version: 8.2.0
Question: After completing module 7, pausing the lab, and then returning to begin module 8, I'm receiving a 'Kibana server is not ready yet.' error.

I've tried restarting the machines using the gear icon on the lab itself and restarting the kibana and elasticsearch docker containers with no change. Checking the health of the kibana container shows multiple 503s, though I can't tell what its checking that's returning those:

elastic@ip-172-31-8-179:~/elastic-agent-8.8.2-linux-x86_64$ docker inspect --format "{{json .State.Health }}" kibana | jq
{
  "Status": "unhealthy",
  "FailingStreak": 68,
  "Log": [
    {
      "Start": "2025-07-10T19:36:09.849799381Z",
      "End": "2025-07-10T19:36:09.923285275Z",
      "ExitCode": 22,
      "Output": "HTTP 503"
    },
    {
      "Start": "2025-07-10T19:36:19.924276344Z",
      "End": "2025-07-10T19:36:19.989855255Z",
      "ExitCode": 22,
      "Output": "HTTP 503"
    },
    {
      "Start": "2025-07-10T19:36:29.99065337Z",
      "End": "2025-07-10T19:36:30.057688585Z",
      "ExitCode": 22,
      "Output": "HTTP 503"
    },
    {
      "Start": "2025-07-10T19:36:40.059089268Z",
      "End": "2025-07-10T19:36:40.13690337Z",
      "ExitCode": 22,
      "Output": "HTTP 503"
    },
    {
      "Start": "2025-07-10T19:36:50.138575063Z",
      "End": "2025-07-10T19:36:50.206286742Z",
      "ExitCode": 22,
      "Output": "HTTP 503"
    }
  ]
}

All of the other containers appear healthy:

CONTAINER ID   IMAGE                                                  COMMAND                  CREATED         STATUS                     PORTS                                                                                  NAMES
83ef7efa2a53   training/client-loadgen                                "dumb-init -- node_m…"   14 months ago   Up 36 minutes                                                                                                     loadgen
6b1ff5c9eca4   ubuntu_petclinic-client                                "/root/startup.sh"       14 months ago   Up 36 minutes (healthy)    0.0.0.0:4000->4000/tcp, 22/tcp, 0.0.0.0:8080->8080/tcp                                 petclinic-client
dd8c4660ad34   ubuntu_petclinic-server                                "/root/startup.sh"       14 months ago   Up 36 minutes (healthy)    22/tcp, 0.0.0.0:8000->8000/tcp, :::8000->8000/tcp                                      petclinic-server
407d0124367a   ubuntu_mysql                                           "/root/startup.sh"       14 months ago   Up 36 minutes (healthy)    22/tcp, 0.0.0.0:3306->3306/tcp, :::3306->3306/tcp                                      mysql
466f733beec3   ubuntu_address-finder                                  "/usr/local/bin/guni…"   14 months ago   Up 36 minutes (healthy)    0.0.0.0:5000->5000/tcp                                                                 address-finder
c965fb887e5b   docker.elastic.co/beats/elastic-agent-complete:8.8.2   "/usr/bin/tini -- /u…"   14 months ago   Up 35 minutes (healthy)    0.0.0.0:8200->8200/tcp, :::8200->8200/tcp, 0.0.0.0:8220->8220/tcp, :::8220->8220/tcp   fleet-server
affda2fbda93   docker.elastic.co/kibana/kibana:8.8.2                  "/bin/tini -- /usr/l…"   14 months ago   Up 4 minutes (unhealthy)   0.0.0.0:5601->5601/tcp, :::5601->5601/tcp                                              kibana
06c71b5eee30   docker.elastic.co/elasticsearch/elasticsearch:8.8.2    "/bin/tini -- /usr/l…"   14 months ago   Up 13 minutes (healthy)    0.0.0.0:9200->9200/tcp, :::9200->9200/tcp, 9300/tcp                                    elasticsearch
11508d6a20ea   docker.elastic.co/elasticsearch/elasticsearch:8.8.2    "/bin/tini -- /usr/l…"   14 months ago   Exited (0) 14 months ago

And a curl to localhost:9200 gets a connection refused:

elastic@ip-172-31-8-179:~/elastic-agent-8.8.2-linux-x86_64$ docker exec kibana curl -XGET 127.0.0.1:9200
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (7) Failed to connect to 127.0.0.1 port 9200: Connection refused

Are there any other troubleshooting steps I can take here, or can the lab be reset to its original state?

Thanks

2

Hi @jloney ,

I replaced your lab to its original state.

Please let us know if you still have issues.

Best,
Andre

3

That worked, thanks!