From 730bc57c15dd51c7923bfea07975babf9a33a95b Mon Sep 17 00:00:00 2001
From: Matt Jarvis <matt.jarvis@datacentred.co.uk>
Date: Wed, 13 Jul 2016 11:08:41 +0100
Subject: [PATCH] Nagios check for recent Ceilometer updates

Checks how recent the data in Ceilometer is

Change-Id: I166bf0a1242c1d5442f4d4b5d616b8cecf4ce6fa
---
 nagios-plugins/check_ceilometer_update.py | 87 +++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100755 nagios-plugins/check_ceilometer_update.py

diff --git a/nagios-plugins/check_ceilometer_update.py b/nagios-plugins/check_ceilometer_update.py
new file mode 100755
index 0000000..861659a
--- /dev/null
+++ b/nagios-plugins/check_ceilometer_update.py
@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+# pylint: disable=import-error,too-few-public-methods
+"""
+Check ceilometer has recent data
+"""
+
+from ceilometerclient import client
+import datetime
+import argparse
+import sys
+import iso8601
+import pytz
+
+NAGIOS_OK = 0
+NAGIOS_WARNING = 1
+NAGIOS_CRITICAL = 2
+NAGIOS_UNKNOWN = 3
+
+class CeilometerConnect(object):
+    """
+    Ceilometer connection class
+    """
+    def __init__(self, args):
+        version = '2'
+        self.ceilo_connect = client.get_client(version,
+                                               os_username=args.username,
+                                               os_password=args.password,
+                                               os_tenant_name=args.tenant_name,
+                                               os_auth_url=args.auth_url)
+
+    def check_samples(self):
+        """
+        Check meters are incrementing
+        """
+        # Get last sample
+        sample = self.ceilo_connect.samples.list(meter_name='cpu', limit='1')
+        if sample:
+            return sample[0].recorded_at
+        else:
+            return False
+
+def utcnow():
+    """
+    Return timezone aware UTC date
+    """
+    return datetime.datetime.now(tz=pytz.utc)
+
+def get_args():
+    """
+    Parse CLI arguments
+    """
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-u', '--username', required=True)
+    parser.add_argument('-p', '--password', required=True)
+    parser.add_argument('-t', '--tenant_name', required=True)
+    parser.add_argument('-a', '--auth_url', required=True)
+    parser.add_argument('-w', '--warn', type=int, required=True)
+    parser.add_argument('-c', '--crit', type=int, required=True)
+    args = parser.parse_args()
+    return args
+
+def main():
+    """
+    Main script body
+    """
+    args = get_args()
+
+    ceilo_connect = CeilometerConnect(args)
+    sample = ceilo_connect.check_samples()
+
+    if sample:
+        delta = utcnow() - iso8601.parse_date(sample)
+        if delta >= datetime.timedelta(minutes=args.crit):
+            print "CRITICAL: Ceilometer data behind by %s" % delta
+            sys.exit(NAGIOS_CRITICAL)
+        elif delta >= datetime.timedelta(minutes=args.warn):
+            print "WARNING: Ceilometer data behind by %s" % delta
+            sys.exit(NAGIOS_WARNING)
+        else:
+            print "OK: Ceilometer data updating - last updated at %s" % sample
+            sys.exit(NAGIOS_OK)
+    else:
+        print "UNKNOWN: Ceilometer data not returning"
+        sys.exit(NAGIOS_UNKNOWN)
+
+if __name__ == "__main__":
+    main()