initial script

load_per_cpu.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+WARNING=( 8 5 2 )
+CRITICAL=( 10 8 3 )
+while test $# -gt 0; do
+    case $1 in
+        (-h|--help) cat <<EOF
+$0 [OPTIONS]
+
+OPTIONS
+
+  -w, --warning   "a b c"   set warning threshold for:
+                            a: 1min, b: 5min, c: 15min average
+                            (default: ${WARNING[@]})
+  -c, --critical  "a b c"   set critical threshold for:
+                            a: 1min, b: 5min, c: 15min average
+                            (default: ${CRITICAL[@]})
+
+DESCRIPTION
+
+Icinga plugin to check load average per CPU. Shows 1min, 5min 15min
+average per CPU. Different to check_load, the load is divided by the
+number of CPU units and therefore normalized. So the same warning and
+critical levels fit for any server.
+
+EOF
+                    exit;;
+        (-w|--warning) shift; WARNING=( $1 );;
+        (-c|--critical) shift; CRITICAL=( $1 );;
+    esac
+    if test $# -lt 1; then
+        echo "ERROR: missing option, try $0 --help"
+        exit 1
+    fi
+    shift
+done
+
+a=( $(cut -d' ' -f 1-3 </proc/loadavg) )
+
+echo "before ${a[@]}"
+level=0
+txt=OK
+for ((i=0;i<3;++i)); do
+    a[$i]=$(bc -l <<< "${a[$i]}/$(nproc)")
+    if test $level -lt 1 -a $(bc -l <<< "${a[$i]}>${WARNING[$i]}") -eq 1; then
+        level=1
+        txt=WARNING
+    fi
+    if test $level -lt 2 -a $(bc -l <<< "${a[$i]}>${CRITICAL[$i]}") -eq 1; then
+        level=2
+        txt=CRITICAL
+    fi
+done
+echo $txt - load average: $(printf '%.2f, %.2f, %.2f|load1=%.3f;%.3f;%.3f;0; load5=%.3f;%.3f;%.3f;0; load15=%.3f;%.3f;%.3f;0;' ${a[@]} ${a[0]} ${WARNING[0]} ${CRITICAL[0]} ${a[1]} ${WARNING[1]} ${CRITICAL[1]} ${a[2]} ${WARNING[2]} ${CRITICAL[2]})
+exit $level