Initial public release of NagCat

LICENSE

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README

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+NagCat README
+=============
+
+INTRODUCTION
+------------
+
+NagCat is a configuration based monitoring framework intended for use
+with Nagios 3.x. NagCat uses tests defined in a coil configuration
+file and runs them against hosts defined in Nagios, submitting results
+as passive tests to Nagios. Each test run by NagCat translates to one
+service defined in Nagios. This is a significant departure from the
+normal mode of operation for Nagios which requires it to schedule and
+run independent scripts (aka active checks) to check each service it is
+monitoring.
+
+The primary purpose of this approach is to ensure that adding more tests
+for a service imposes a minimal impact. By running as a separate daemon
+NagCat has the ability to group tests together that make the same
+query to a service and run different checks against the return data. For
+example you may want to write two tests that both query Apache's
+server-status page, one test checks the number of threads working
+threads, another checks the number of requests per second. These two
+tests can be represented in Nagios as two different services and thus
+can send out alerts independently. NagCat will automatically schedule
+these two tests to run at the same time, running the two tests against
+the data returned by a single request to Apache. For such a simple
+example this may not be critical but it can be on a large and complex
+system that requires many many different tests to ensure that it is
+functioning properly.
+
+
+FEATURES
+--------
+
+ * Smart scheduling to reduce the number of queries required.
+ * Tests defined in a declarative config format, improving
+   maintainability of tests by making them easy to read and avoiding the
+   potential mess that may grow if they were all written as individual
+   Nagios plugins.
+ * Detailed reports with embedded documentation to give the person
+   responding to an alert the info the need to investigate the issue
+   even if they do not have extensive experience with the system.
+ * Tests or sub-tests can be defined to run at different intervals.
+ * Set different alert thresholds based on the time.
+
+
+DOCUMENTATION
+-------------
+
+Further documentation on the usage and implementation of NagCat can
+be found in the docs directory.
+
+If you are too lazy to cd into the docs directory and just want to get
+started try this:
+
+bin/nagcat -c docs/example.conf -t http_title -H www.w3.org -P 80
+
+
+CREDITS
+-------
+
+NagCat is maintained by Michael Marineau <mmarineau@itasoftware.com>
+with the help of fellow ITA Software employees and licensed under the
+Apache License, Version 2.0.

TODO

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+TODO
+====
+
+Minor Improvements
+------------------
+
+ - Pre-compile regular expressions and other optimizations.
+ - Add support for 'warning' and 'critical' at the sub-test level and
+   trickier boolean logic.
+ - Improve config validation and error messages.
+ - Include additional query data in error reports.
+ - Allow arbitrary options in single test mode.
+ - Add support for service dependencies to avoid bogus alerts.
+
+Major Features
+--------------
+
+ - Adaptive monitoring based on past behavior.
+ - Generate RRDTool graphs.

bin/nagcat

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+#!/usr/bin/env python
+
+# Copyright 2008-2009 ITA Software, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Start up nagcat
+# If the package cannot be found automatically assume the source directory
+# structure and look for it in ../python/ (ie if this is a svn checkout)
+
+import os
+import sys
+
+if __name__ == "__main__":
+    try:
+        from nagcat.main import main
+    except ImportError:
+        root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+        sys.path.append("%s/python" % root)
+        from nagcat.main import main
+
+    main()