cacti-template-snmp_tcp_connection_status.sh

   1 #!/bin/sh
   2 #
   3 # get number of tcp connection
   4 # jbrooks@oddelement.com
   5 #
   6 # modified to use awk and added timeout param by Elan Ruusamäe <glen@pld-linux.org>
   7
   8 hostname=$1
   9 snmp_community=${2:-public}
  10 timeout=${3:-10}
  11 retry=5
  12
  13 if [ -z "$hostname" ]; then
  14         echo >&2 "Usage: $0 HOSTNAME [SNMP_COMMUNITY] [TIMEOUT]"
  15         exit 1
  16 fi
  17
  18 snmpnetstat -v 2c -r "$retry" -c "$snmp_community" -t "$timeout" -Can -Cp tcp "$hostname" | awk '
  19         $1 == "tcp" {
  20                 ss[$4]++;
  21         }
  22
  23         END {
  24                 # socket states from net-snmp-5.4.2.1/apps/snmpnetstat/inet.c
  25                 split("CLOSED LISTEN SYNSENT SYNRECEIVED ESTABLISHED FINWAIT1 FINWAIT2 CLOSEWAIT LASTACK CLOSING TIMEWAIT", t, " ");
  26                 # create mapping (duh, why there are different data names used?)
  27                 # XXX TIMECLOSE missing
  28                 split("time_close listen syn_sent syn_recv established fin_wait1 fin_wait2 closewait lastack closing time_wait", m, " ");
  29                 for (i in t) {
  30                         s = t[i];
  31                         k = m[i];
  32                         printf("%s:%d ", k, ss[s]);
  33                 }
  34 }'