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#!/usr/bin/env ruby
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begin
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require 'rubygems'
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rescue LoadError
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end
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require 'facter'
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BASE = %q(If needed, change the hostname permanently via 'hostname' command and editing
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appropriate configuration file.
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(e.g. on Red Hat systems /etc/sysconfig/network).
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If 'hostname -f' still returns unexpected result, check /etc/hosts and put
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hostname entry in the correct order, for example:
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1.2.3.4 full.hostname.com full
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Fully qualified hostname must be the first entry on the line)
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DIFFERENT = %q(Output of 'facter fqdn' is different from 'hostname -f'
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Make sure above command gives the same output. )
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INVALID = %q(Output of 'hostname -f' does not seems to be valid FQDN
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Make sure above command gives fully qualified domain name. At least one
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dot must be present. )
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def error_exit(message, code)
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$stderr.puts message
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exit code
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end
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# Check that facter actually has a value that matches the hostname.
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# This should always be true for facter >= 1.7
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error_exit(DIFFERENT + BASE, 1) if Facter.value(:fqdn) != `hostname -f`.chomp
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# Every FQDN should have at least one dot
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error_exit(INVALID + BASE, 2) unless Facter.value(:fqdn).include?('.')
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