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#TODO RHEL support #TODO inteligent detection of success #Detection of base ip? require 'facter' require 'getoptlong' require 'English' apply=false debug=false verbose=false version='1.0' exitcode=0 opts = GetoptLong.new( ["--help", "-h", GetoptLong::NO_ARGUMENT], ["--debug", "-d", GetoptLong::NO_ARGUMENT], ["--verbose", "-v", GetoptLong::NO_ARGUMENT], ["--version", "-V", GetoptLong::NO_ARGUMENT], ["--apply", "-a", GetoptLong::NO_ARGUMENT] ) def printUsage(error_code=1) print $0, "--debug","--version","--apply(syncronise interfaces file with live interfaces" puts "N.B apply will bring down interfaces that aren't in the interfaces file" puts "without apply the script just diffs the current live vifs and the interface file" puts "Only auto interfaces are read, debian only at the moment" exit(error_code) end begin opts.each do |opt, arg| case opt when "--help" printUsage when "--debug" debug=true when "--version" print "version is:", version puts exit(1) when "--apply" apply=true when "--verbose" verbose=true end end end printUsage unless Facter.value('operatingsystem') == 'Debian' #reads a file or runs a command, performs a regex on that output and returns the matches as a sorted alphabetical array #regex in single quotes filename in doubles def readFileToolMatchToArray(filename,regex,debug=false) matches = Array.new if File.executable?(filename) puts "file is executable running command" if debug #create a string from the commands stdout `#{filename}`.each_line do |line| matches.push($1) if line =~ /#{regex}/i end else puts "reading file" if debug #reads file line by line IO.foreach(filename) do |line| matches.push($1) if line =~ /#{regex}/i end end #sort alphabetically matches.sort matches end #make sure current interfaces match those specified in the interface file. def interfaceSync(interfaces_file,interfaces_current,apply=false) vifs_to_bring_down = interfaces_current-interfaces_file exitcode = 1 if vifs_to_bring_down.length #tell us if we're going to do something vifs_to_bring_down.each do |vif_not_in_interface_file| print "If --apply specified bring down ", vif_not_in_interface_file , " which is live but not in interface file\n" `/sbin/ifdown #{vif_not_in_interface_file}` if apply end vifs_to_bring_up = interfaces_file-interfaces_current exitcode = 2 if vifs_to_bring_up.length > 1 #tell us if we're going to do something vifs_to_bring_up.each do |new_vif_in_interface_file| print "If --apply specified bring up ", new_vif_in_interface_file, " which is in interface file but not live\n" `/sbin/ifup #{new_vif_in_interface_file}` if apply end end interfaces_file = readFileToolMatchToArray("/etc/network/interfaces",'^auto.\s*(\S*)') interfaces_current = readFileToolMatchToArray("/sbin/ifconfig",'^([\w\d\:]+)') puts "interfaces file contains:" , interfaces_file if debug puts "current up interfaces are:" , interfaces_current if debug interfaceSync(interfaces_file,interfaces_current,apply) exit(exitcode)

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