Reading nagios host and service status from a bash script

[hoffmp]

I'm currently running Nagios Core 4.2.1 and would like to write a bash script that can determine current host and service status information without having to re-run the underlying checks. (I need reasonably current, but not instantaneous information) Is there a way to do this that's more direct than simply parsing the status.dat file? Thanks very much in advance for any help you can offer

[dwhitfield]

I realize the documentation is daunting, but I think NDOUtils is what you want: https://assets.nagios.com/downloads/nag ... OUtils.pdf

Please let us know if you get stuck at any particular point in the document or if this is definitely not what you want.

[mcapra]

If you don't mind JSON, the JSON Query Generator is probably good for this:

http://<your_nagios_host>/nagios/jsonquery.html

In action, to get the status of the HTTP service on localhost:

Code: Select all

[root@xi-stable scheduledbackups]# curl -XGET 'http://nagiosadmin:[email protected]/nagios/cgi-bin/statusjson.cgi?query=service&hostname=localhost&servicedescription=HTTP'
{
  "format_version": 0,
  "result": {
    "query_time": 1485210998000,
    "cgi": "statusjson.cgi",
    "user": "nagiosadmin",
    "query": "service",
    "query_status": "released",
    "program_start": 1484945781000,
    "last_data_update": 1485210990000,
    "type_code": 0,
    "type_text": "Success",
    "message": ""
  },
  "data": {
    "service": {
      "host_name": "localhost",
      "description": "HTTP",
      "host_name": "localhost",
      "description": "HTTP",
      "plugin_output": "HTTP OK: HTTP/1.1 200 OK - 3302 bytes in 0.001 second response time",
      "long_plugin_output": "",
      "perf_data": "time=0.000647s;;;0.000000 size=3302B;;;0",
      "max_attempts": 4,
      "current_attempt": 1,
      "status": 2,
      "last_update": 1485210990000,
      "has_been_checked": true,
      "should_be_scheduled": true,
      "last_check": 1485210723000,
      "check_options": 0,
      "check_type": 0,
      "checks_enabled": true,
      "last_state_change": 1483717750000,
      "last_hard_state_change": 1483717750000,
      "last_hard_state": 0,
      "last_time_ok": 1485210723000,
      "last_time_warning": 0,
      "last_time_unknown": 0,
      "last_time_critical": 0,
      "state_type": 1,
      "last_notification": 0,
      "next_notification": 0,
      "next_check": 1485211023000,
      "no_more_notifications": false,
      "notifications_enabled": true,
      "problem_has_been_acknowledged": false,
      "acknowledgement_type": 0,
      "current_notification_number": 0,
      "accept_passive_checks": true,
      "event_handler_enabled": true,
      "flap_detection_enabled": true,
      "is_flapping": false,
      "percent_state_change": 0.00,
      "latency": 0.00,
      "execution_time": 0.00,
      "scheduled_downtime_depth": 0,
      "process_performance_data": true,
      "obsess": true
    }
  }
}

Note that the "status" field follows slightly different conventions than regular old plugin output codes (0=OK, 1=WARNING, etc).

[[email protected]]

I've not written any JSON, but am certainly willing to give it a try. That's an excellent example and I think it'll get me through what I need for now. Thanks again for taking the time to spell it all out in such detail

[dwhitfield]

Did you want us to leave this open or lock it up?

[hoffmp]

I think I'm good for now. Please go ahead and close the thread. Thanks again!