Noissue - Handle nodes without swap

modules/nagios/files/check_memory

 #!/usr/bin/env python
 
 import re, argparse
 
 def format_memory(bytes):
   if bytes >= 1024 * 1024:
     return "%i MB" % (bytes / (1024 * 1024))
   elif bytes >= 1024:
     return "%i kB" % (bytes / 1024)
   else:
@@ skipping 24 matching lines @@
       else:
         value = int(value)
       meminfo[label] = value
 
   memtotal = meminfo.get("memtotal", 0)
   memfree = meminfo.get("memfree", 0) + meminfo.get("buffers", 0) + meminfo.get("cached", 0)
   swaptotal = meminfo.get("swaptotal", 0)
   swapfree = meminfo.get("swapfree", 0) + meminfo.get("swapcached", 0)
 
   mempercentage = round(float(memfree) / memtotal * 100)
-  swappercentage = round(float(swapfree) / swaptotal * 100)
+  swappercentage = round(float(swapfree) / swaptotal * 100) if swaptotal else 0
 
   status = "memory %i%% (%s/%s) swap %i%% (%s/%s)" % (
     mempercentage, format_memory(memfree), format_memory(memtotal),
     swappercentage, format_memory(swapfree), format_memory(swaptotal)
   )
 
   perfdata = "memory=%i;%i;%i swap=%i;%i;%i" % (
     mempercentage, args.memwarn, args.memcrit,
     swappercentage, args.swapwarn, args.swapcrit
   )
 
   output = "%s|%s" % (status, perfdata)
 
   if mempercentage <= args.memcrit or swappercentage <= args.swapcrit:
     print "CRITICAL - " + output
   elif mempercentage <= args.memwarn or swappercentage <= args.swapwarn:
     print "WARNING - " + output
   else:
     print "OK - " + output