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nagios: another enhancement for check_linux_memory2

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Chl 2024-04-25 19:14:03 +02:00
parent 01259ad912
commit 7594ba6bd7
1 changed files with 24 additions and 1 deletions
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25
nagios/check_linux_memory2.sh
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@ -33,6 +33,7 @@ Options:
-n = Don't Include cached memory as free memory when calculating your percentage free
-K = Don't check the OutOfMemory Kill counter
-k [0-9999] = Threshold for OOMKill alert (default: 0)
-A = Don't check awk capabilities (as of 2024: mawk can't printf an integer over 2^31)
EOF
}
@ -50,6 +51,7 @@ invalid_type() {
while test -n "$1"; do
case $1 in
--help) print_help ; exit 0 ;;
-A) AWK_CHECK=0 ;;
-h) print_help ; exit 0 ;;
-w) WARN="$2"; shift ;;
-c) CRIT="$2"; shift ;;
@ -70,8 +72,18 @@ done
[ -z "$DIV" ] && DIV=M
[ -z "$FC" ] && FC=0
[ -z "$DISABLE_OOMKILL" ] && DISABLE_OOMKILL=""
[ -z "$AWK_CHECK" ] && AWK_CHECK=1
[ -z "$THRESHOLD_OOMKILL" ] && THRESHOLD_OOMKILL=0
##############################################
## Check awk capabilities
##############################################
if [ "$AWK_CHECK" -gt 0 ] && [ "$( awk 'BEGIN{ printf "%ld", 3000000000 }' )" != "3000000000" ]; then
echo "UNKNOWN this version of awk is not able to display big numbers."
exit 3
fi
##############################################
## Check user input
##############################################
@ -139,7 +151,18 @@ END { if ( nc != 1 ) { free=free+cache+buff }
if ( oomkill > threshold_oomkill ) { result="CRITICAL - Out of memory kills detected" ; xit="2" }
}
{
print xit" MEMORY "result" - "freeperct"% Free - Total:"tot/divnum div" Active:"active/divnum div" Inactive:"inactive/divnum div" Buffers:"buff/divnum div" Cached:"cache/divnum div" "oomkill_display" |Active="active"B;0;0;0 Buffers="buff"B;0;0;0 Cached="cache"B;0;0;0 Free="free"B;"warn";"crit";0 Inactive="inactive"B;0;0;0"oomkill_perfdata
printf "%d MEMORY %s - %.2f%% Free - Total:%.1f%s", xit, result, freeperct, tot/divnum, div
printf " Active:%.1f%s", active/divnum, div
printf " Inactive:%.1f%s", inactive/divnum, div
printf " Buffers:%.1f%s", buff/divnum, div
printf " Cached:%.1f%s", cache/divnum, div
printf "%s", oomkill_display
printf " |Active=%ldB;;;0;%ld", active, tot
printf " Buffers=%ldB;;;0;%ld", buff, tot
printf " Cached=%ldB;;;0;%ld", cache, tot
printf " Free=%ldB;%ld;%ld;0;%ld", free, warn, crit, tot
printf " Inactive=%ldB;;;0;%ld", inactive, tot
printf "%s", oomkill_perfdata
}
}' "$MEMINFO" "$OOMKILLINFO" )