First import

README.md

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+# nagios-plugin-chrony
+
+Nagios plugin to check the clock offset of chrony
+
+## Authors
+
+Mohamed El Morabity <melmorabity -(at)- fedoraproject.org>
+
+## Usage
+
+    check_chrony.py --hostname HOSTNAME --warning WARNING --critical CRITICAL [--port PORT]
+
+### Options
+
+    -h, --help
+
+Show help message and exit
+
+    -H HOSTNAME, --hostname=HOSTNAME
+
+Host name or IP address
+
+    -p PORT, --port=PORT
+
+Chrony UDP port (default: 323)
+
+    -w WARNING, --warning=WARNING
+
+Offset to result in warning status (in seconds)
+
+    -c CRITICAL, --critical=CRITICAL
+
+Offset to result in critical status (in seconds)
+
+## Examples
+
+    $ ./check_chrony -H localhost -w 0.5 -c 1
+    OK - Offset -4.2285e-05 seconds | 'offset'=-0.000042285s;;;;

check_chrony.py

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+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Copyright (C) 2016 Mohamed El Morabity <melmorabity@fedoraproject.com>
+#
+# This module is free software: you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation, either version 3 of the License, or (at your option) any later
+# version.
+#
+# This software is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+import re
+import subprocess
+import pynag.Plugins
+
+
+DEFAULT_CHRONYD_PORT = 323
+
+helper = pynag.Plugins.PluginHelper()
+
+# Specify arguments to the plugin
+helper.parser.description = 'This plugin checks the clock offset of chronyd.'
+helper.parser.add_option('-H', '--hostname', help='Host name or IP address')
+helper.parser.add_option('-p', '--port', type='int', default=DEFAULT_CHRONYD_PORT, help='Chrony UDP port (default: %i)' % DEFAULT_CHRONYD_PORT)
+helper.parser.add_option('-w', '--warning', type='float', help='Offset to result in warning status (in seconds)')
+helper.parser.add_option('-c', '--critical', type='float', help='Offset to result in critical status (in seconds)')
+helper.parse_arguments()
+
+if not helper.options.hostname:
+    helper.parser.error('Hostname is mandatory')
+if not helper.options.warning:
+    helper.parser.error('Warning level is mandatory')
+if not helper.options.critical:
+    helper.parser.error('Critical level is mandatory')
+if helper.options.critical <= helper.options.warning:
+    helper.parser.error('Critical level cannot be lesser than or equal to warning')
+
+# Run chrony tracking
+command = ['chronyc', '-h', helper.options.hostname, '-p', str(helper.options.port), 'tracking']
+if helper.options.show_debug:
+    command.append('-d')
+
+try:
+    p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    output = p.communicate()[0]
+except OSError as e:
+    helper.status(pynag.Plugins.unknown)
+    helper.add_summary(str(e))
+    helper.exit()
+
+if p.returncode != 0:
+    helper.status(pynag.Plugins.critical)
+    helper.add_summary(output)
+    helper.exit()
+
+matcher = re.search("^Leap status\s*:\s*(.*)$", output, flags=re.MULTILINE)
+leap_status = matcher.group(1)
+if leap_status == 'Not synchronised':
+    helper.status(pynag.Plugins.critical)
+    helper.add_summary('Server is not synchronised')
+    helper.exit()
+if leap_status == 'Unknown':
+    helper.status(pynag.Plugins.unknown)
+    helper.add_summary('Server status is unknown')
+    helper.exit()
+
+matcher = re.search("^System time\s*:\s*([0-9]+\.[0-9]*) seconds (slow|fast)", output, flags=re.MULTILINE)
+offset = float(matcher.group(1))
+if matcher.group(2) == 'fast':
+    offset = -offset
+if abs(offset) >= helper.options.critical:
+    helper.status(pynag.Plugins.critical)
+elif abs(offset) >= helper.options.warning:
+    helper.status(pynag.Plugins.warning)
+else:
+    helper.status(pynag.Plugins.ok)
+
+helper.add_metric(label='offset', value='%.9f' % offset, uom='s')
+helper.add_summary('Offset %g seconds' % offset)
+helper.exit()