Properly return WARNING and CRITICAL in check_bandwidth

modules/nagios/files/check_bandwidth

Index: modules/nagios/files/check_bandwidth
===================================================================
--- a/modules/nagios/files/check_bandwidth
+++ b/modules/nagios/files/check_bandwidth
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-import re, subprocess, sys
+import os, re, subprocess, sys
 
 def extract_data(type, vnstat_output):
   match = re.search(r"%s\s*([\d\.]*) (.bit/s)" % type, vnstat_output)
@@ -21,10 +21,13 @@
 
 if __name__ == "__main__":
   if len(sys.argv) != 3:
-    print "Usage: `basename $0` WARN CRIT"
+    script_name = os.path.basename(sys.argv[0])
+    print "Usage: %s WARN CRIT" % script_name
     sys.exit(0)
 
   (warn, crit) = sys.argv[1:3]
+  warn = int(sys.argv[1])
+  crit = int(sys.argv[2])
 
   vnstat_output = subprocess.check_output(["vnstat", "-tr"])
   (rx, rx_unit) = extract_data("rx", vnstat_output)
@@ -37,12 +40,12 @@
 
   output = "%s|%s" % (status, perfdata)
 
-  if warn <= rx or warn <= tx:
+  if rx >= crit or tx >= crit:
+    print "CRITICAL - " + output
+    sys.exit(2)
+
+  if rx >= warn or tx >= warn:
     print "WARNING - " + output
     sys.exit(1)
 
-  if crit <= rx or crit <= tx:
-    print "CRITICAL - " + output
-    sys.exit(2)
-
   print "OK - " + output