contrib/check_inodes.pl

   1 #!/usr/bin/perl
   2 ##############################################################################
   3 # This plugin uses df to gather filesystem statistics and check the percent  #
   4 # used of inodes.  I've put a switch in here since i've got both aix and     #
   5 # linux systems...adjust for your syntax's results.                          #
   6 # Note: the percentages passed in MUST NOT have % after them                 #
   7 # No warranty is either implied, nor expressed herein.                       #
   8 #                                                                            #
   9 ##############################################################################
  10
  11 $filesystem = $ARGV[0];
  12 $warnpercent = $ARGV[1];
  13 $critpercent = $ARGV[2];
  14
  15 #------Find out what kind of syntax to expect
  16 $systype=`uname`;
  17 chomp($systype);
  18
  19 #------Make sure we got called with the right number of arguments
  20 #------you could also put a check in here to make sure critical level is
  21 #------greater than warning...but what the heck.
  22 die "Usage: check_inodes filesystem warnpercent critpercent" unless @ARGV;
  23
  24 if ($#ARGV < 2) {
  25   die "Usage: check_inodes filesystem warnpercent critpercent";
  26 }#end if
  27
  28 #------This gets the data from the df command
  29 $inputline = `df -i $filesystem|grep -v "Filesystem"`;
  30
  31 #------replaces all spaces with a single :, that way we can use split
  32 $inputline =~ y/ /:/s;
  33
  34 #------different oses give back different sets of columns from the df -i
  35 #------(at least mine do).  This way I can use this plugin on all my hosts
  36 #------if neither of these work, add your own in, or if you've got one that
  37 #------just flat out reports something different...well...perl is your friend.
  38 SWITCH: {
  39   if ($systype eq "Linux") {
  40     ($fs,$inodes,$iused,$ifree,$ipercent,$mntpt) = split(/:/,$inputline);
  41     last SWITCH;
  42   }#end if
  43   if ($systype eq "AIX") {
  44     ($fs,$blks,$free,$percentused,$iused,$ipercent,$mntpt) = split(/:/,$inputline);
  45     last SWITCH;
  46   }#end if
  47 }#end switch
  48
  49 #------First we check for critical, since that is, by definition and convention
  50 #------going to exceed the warning threshold
  51 $ipercent =~ y/%//ds;
  52
  53 if ($ipercent > $critpercent) {
  54   print "CRITICAL: $filesystem inode use exceeds critical threshold $critpercent ($ipercent)";
  55   exit 1;
  56 }# end if
  57
  58 #------Next we check the warning threshold
  59 if ($ipercent > $warnpercent) {
  60   print "WARNING: $filesystem inode use exceeds warning threshold $warnpercent ($ipercent)";
  61   exit 2;
  62 }# end if
  63
  64
  65 #------thanks to the magic of procedural programming, we figure if we got here,
  66 #------everything MUST be fine.
  67 print "$filesystem inode use within limits ($ipercent)";
  68 exit 0;
  69