splunk container healthcheck

Dockerfile

FROM splunk/splunk:9.0.4.1

HEALTHCHECK --interval=60s --timeout=60s --start-period=60s \
   CMD curl -s -k -f --retry 3 --retry-connrefused --max-time 3 --retry-delay 5 --retry-max-time 60 "https://localhost:8089/" -o /dev/null -w "%{http_code}" && whoami || bash -c 'whoami;kill -s 15 1 && (sleep 10; kill -s 9 1)'

sample output

docker inspect --format "{{json .State.Health}}" lala | jq .
{
  "Status": "healthy",
  "FailingStreak": 0,
  "Log": [
    {
      "Start": "2024-07-17T10:56:25.122334874+01:00",
      "End": "2024-07-17T10:56:25.259282165+01:00",
      "ExitCode": 0,
      "Output": "200ansible\n"
    },
    {
      "Start": "2024-07-17T10:57:25.260814748+01:00",
      "End": "2024-07-17T10:57:25.360594761+01:00",
      "ExitCode": 0,
      "Output": "200ansible\n"
    },
    {
      "Start": "2024-07-17T10:58:25.361583376+01:00",
      "End": "2024-07-17T10:58:25.443363616+01:00",
      "ExitCode": 0,
      "Output": "200ansible\n"
    },
    {
      "Start": "2024-07-17T10:59:25.444510466+01:00",
      "End": "2024-07-17T10:59:25.572295065+01:00",
      "ExitCode": 0,
      "Output": "200ansible\n"
    },
    {
      "Start": "2024-07-17T11:00:25.573592958+01:00",
      "End": "2024-07-17T11:00:25.710717408+01:00",
      "ExitCode": 0,
      "Output": "200ansible\n"
    }
  ]
}