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Added simple cluster monitoring using cman_tool

Returns status of cluster membership and alerts if node is not member of
a cluster or is disallowed membership.
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1 parent a2e1731 commit 9c8b1ea0f1187579b7eaa521711265987630a5c6 @jamtur01 jamtur01 committed Jan 13, 2012
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  1. +40 −0 cman_nodes.rb
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40 cman_nodes.rb
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+#!/usr/bin/env ruby
+
+# Author: James Turnbull
+# Copyright (c) 2012 James Turnbull <james@lovedthanlost.net>
+#
+# MIT License:
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+
+hostname = `hostname -s`.chomp
+
+begin
+ status = `cman_tool nodes -n #{hostname} -F type`
+ case status
+ when 'X'
+ puts "status err Cluster node #{hostname} is not a member of the cluster."
+ when 'd'
+ puts "status err Cluster node #{hostname} is disallowed from the cluster."
+ else
+ puts "status ok Cluster node #{hostname} is a member of the cluster."
+ end
+rescue => e
+ puts "status err Problem running cman_tool plugin: #{e.message}"
+end

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