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Commit eb869f29 authored by Hahn Axel (hahn)'s avatar Hahn Axel (hahn)
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fix netstat; shell fixes; no tmpfiles; IML look

parent 9876037c
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1 merge request!50Fix netstat
...@@ -8,12 +8,50 @@ ...@@ -8,12 +8,50 @@
# #
# ---------------------------------------------------------------------- # ----------------------------------------------------------------------
# 2020-07-08 v1.0 <axel.hahn@iml.unibe.ch> # 2020-07-08 v1.0 <axel.hahn@iml.unibe.ch>
# 2022-10-25 v1.1 <axel.hahn@unibe.ch> shell fixes; no tmpfiles; IML look
# ====================================================================== # ======================================================================
. `dirname $0`/inc_pluginfunctions . $(dirname $0)/inc_pluginfunctions
self_APPNAME=$( basename $0 | tr [:lower:] [:upper:] )
self_APPVERSION=1.1
# ----------------------------------------------------------------------
# functions
# ----------------------------------------------------------------------
function showHelp(){
cat <<EOF
______________________________________________________________________
$self_APPNAME
v$self_APPVERSION
(c) Institute for Medical Education - University of Bern
Licence: GNU GPL 3
______________________________________________________________________
Count number of network connections.
SYNTAX:
$(basename $0) [ -w value -c value -h ]
-w VALUE cpu usage warning level (default: 75)
-c VALUE cpu usage critical level (default: 90)
-h or --help show this help.
PARAMETERS:
None.
EXAMPLE:
$(basename $0) -w 60 -c 80 -p 40
If there is no -w and -c then the result is always OK.
EOF
}
# ---------------------------------------------------------------------- # ----------------------------------------------------------------------
# MAIN # MAIN
# ---------------------------------------------------------------------- # ----------------------------------------------------------------------
...@@ -22,30 +60,26 @@ ...@@ -22,30 +60,26 @@
ph.require netstat ph.require netstat
# --- check param -h # --- check param -h
if [ "$1" = "-h" ]; then case "$1" in
echo " "--help"|"-h")
usage: $0 [ -w value -c value -h ] showHelp
-w Warning count (optional)
-c Critical count (optional; must be larger than warning)
-h this help
If there is no -w and -c then the result is always OK.
"
exit 0 exit 0
fi ;;
*)
esac
# --- set optional limits # --- set optional limits
typeset -i iWarnLimit=` ph.getValueWithParam 0 w "$@"` typeset -i iWarnLimit=$( ph.getValueWithParam 0 w "$@")
typeset -i iCriticalLimit=` ph.getValueWithParam 0 c "$@"` typeset -i iCriticalLimit=$( ph.getValueWithParam 0 c "$@")
# --- count all connections # --- count all connections
tmpfile1=`mktemp` typeset -i iTotal=0
tmpfile=`mktemp` typeset -i iEst=0
typeset -i iListen=0
typeset -i iWait=0
(netstat -wltun; netstat -wtun) | awk '{ print $6 }' | grep -E '(ESTABLISHED|LISTEN|TIME_WAIT)' >$tmpfile1 netdata=$( (netstat -wltun; netstat -wtun) | awk '{ print $6 }' | grep -E '(ESTABLISHED|LISTEN|TIME_WAIT)' )
typeset -i iTotal=`wc -l $tmpfile1 | awk '{ print $1 }'` iTotal=$( echo "$netdata" | wc -l | awk '{ print $1 }')
if [ $iWarnLimit -gt 0 -a $iCriticalLimit -gt 0 ]; then if [ $iWarnLimit -gt 0 -a $iCriticalLimit -gt 0 ]; then
ph.setStatusByLimit $iTotal $iWarnLimit $iCriticalLimit ph.setStatusByLimit $iTotal $iWarnLimit $iCriticalLimit
...@@ -55,17 +89,20 @@ ph.status "NETSTAT - count of connections: $iTotal" ...@@ -55,17 +89,20 @@ ph.status "NETSTAT - count of connections: $iTotal"
# --- add performance data # --- add performance data
cat $tmpfile1 | sort | uniq -c >$tmpfile data2=$( echo "$netdata" | sort | uniq -c )
# result is something like that: # result is something like that:
# 5 ESTABLISHED # 5 ESTABLISHED
# 10 LISTEN # 10 LISTEN
# 77 TIME_WAIT # 77 TIME_WAIT
echo "$data2"
ph.perfadd "established" "`grep ESTABLISHED $tmpfile | awk '{ print $1 }' `" iEst=$( echo "$data2" | grep ESTABLISHED | awk '{ print $1 }' )
ph.perfadd "listen" "`grep LISTEN $tmpfile | awk '{ print $1 }' `" iListen=$( echo "$data2" | grep LISTEN | awk '{ print $1 }' )
ph.perfadd "time-wait" "`grep TIME_WAIT $tmpfile | awk '{ print $1 }' `" iWait=$( echo "$data2" | grep TIME_WAIT | awk '{ print $1 }' )
ph.perfadd "established" "$iEst"
ph.perfadd "listen" "$iListen"
ph.perfadd "time-wait" "$iWait"
# --- bye # --- bye
rm -f $tmpfile $tmpfile1
ph.exit ph.exit
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