1 files changed, 70 insertions, 0 deletions
diff --git a/nagios-checks/nagios-check-default-gw b/nagios-checks/nagios-check-default-gw
new file mode 100755
index 0000000..5efc930
--- /dev/null
+++ b/nagios-checks/nagios-check-default-gw
@@ -0,0 +1,70 @@
+#!/usr/bin/ruby
+
+# Copyright (c) 2006 Peter Palfrader <peter@palfrader.org>
+#
+# 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.
+
+require 'optparse'
+
+NAGIOS_STATUS = { :OK => 0, :WARNING => 1, :CRITICAL => 2, :UNKNOWN => -1 };
+@verbose = 0;
+@additional_nameservers = []
+
+def show_help(parser, code=0, io=STDOUT)
+  program_name = File.basename($0, '.*')
+  io.puts "Usage: #{program_name} [options]"
+  io.puts parser.summarize
+  exit(code)
+end
+ARGV.options do |opts|
+        opts.on_tail("-h", "--help" , "Display this help screen")                { show_help(opts) }
+        opts.parse!
+end
+show_help(ARGV.options, 1, STDERR) if ARGV.length > 0
+
+unless File.executable?('/sbin/ip')
+	puts "/sbin/ip is not executable"
+	exit NAGIOS_STATUS[:UNKNOWN]
+end
+
+ip_output = nil
+IO.popen("-") do |f|
+	unless f  # child
+		begin
+			exec('/sbin/ip', 'route', 'show', '0.0.0.0/0')
+		rescue => e
+			puts "Cannot exec ip: "+e.message
+			exit 1
+		end
+	end
+	ip_output = f.readlines
+end
+
+if $? != 0
+	puts "Child exited with non-zero exit code(%d): %s"%[$? >> 8, ip_output]
+else
+	if ip_output.length > 0
+		puts "OK: %s" % [ip_output.join(' ')]
+		exit NAGIOS_STATUS[:OK]
+	else
+		puts "CRITICAL: no default route found."
+		exit NAGIOS_STATUS[:CRITICAL]
+	end
+end