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#!/bin/bash
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#
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# check_si.bash
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#
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# v0.0.1 - 2018-04-22 - nelbren@nelbren.com
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# v0.0.2 - 2018-05-23 - nelbren@nelbren.com
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#
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color_msg() {
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pstate=$1
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msg1=$2
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msg2=$3
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before=$4
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hight=$5
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if [ "$INVERT" == "0" ]; then
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case $pstate in
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$STATE_OK) color="$cOK";;
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$STATE_WARNING) color="$cWA";;
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$STATE_CRITICAL) color="$cCR";;
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$STATE_UNKNOWN) color="$cUN";;
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$STATE_INFO) color="$cIN";;
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esac
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else
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case $pstate in
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$STATE_OK) color="$COK";;
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$STATE_WARNING) color="$CWA";;
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$STATE_CRITICAL) color="$CCR";;
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$STATE_UNKNOWN) color="$CUN";;
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$STATE_INFO) color="$CIN2";;
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esac
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fi
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if [ "$hight" == "1" ]; then
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color2=$Ib
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else
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color2=""
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fi
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line2=$(echo -en $S)$(echo -en $color2)${msg1}$(echo -en $color)${msg2}$(echo -en $S)
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if [ "$before" == "1" ]; then
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line=${line2}${line}
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else
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line=${line}${line2}
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fi
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if [ "$pstate" -gt "$bstate" -a "$bstate" != "$STATE_CRITICAL" -a "$pstate" != "$STATE_INFO" ]; then
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bstate=$pstate
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fi
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}
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regex_get() {
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regex=$1
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data_in=$2
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data_out=""
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[[ $data_in =~ $regex ]] && data_out=${BASH_REMATCH[1]}
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echo $data_out
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}
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approximation() {
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num=$1
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echo "scale=1;i=$num/1;scale=0;j=$num/1;j +(i-j>=.5)" | bc
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}
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cpu_get() {
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# by Paul Colby (http://colby.id.au), no rights reserved ;)
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PREV_TOTAL=0
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PREV_IDLE=0
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rounds=2
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while [ "$rounds" -gt "0" ]; do
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CPU=(`cat /proc/stat | grep '^cpu '`) # Get the total CPU statistics.
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unset CPU[0] # Discard the "cpu" prefix.
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IDLE=${CPU[4]} # Get the idle CPU time.
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# Calculate the total CPU time.
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TOTAL=0
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for VALUE in "${CPU[@]:0:4}"; do
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let "TOTAL=$TOTAL+$VALUE"
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done
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# Calculate the CPU usage since we last checked.
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let "DIFF_IDLE=$IDLE-$PREV_IDLE"
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let "DIFF_TOTAL=$TOTAL-$PREV_TOTAL"
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let "DIFF_USAGE=(1000*($DIFF_TOTAL-$DIFF_IDLE)/$DIFF_TOTAL+5)/10"
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# Remember the total and idle CPU times for the next check.
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PREV_TOTAL="$TOTAL"
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PREV_IDLE="$IDLE"
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# Wait before checking again.
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sleep 0.5
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let "rounds=$rounds-1"
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done
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echo "$DIFF_USAGE%"
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}
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raw_get() {
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uptime=$(awk '{printf("%dd%dh%dm%ds\n",($1/60/60/24),($1/60/60%24),($1/60%60),($1%60))}' /proc/uptime)
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uptime=$(echo $uptime | sed "s/^0d//")
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uptime=$(echo $uptime)
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raw="U$uptime"
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cmf=/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
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if [ -r $cmf ]; then
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hz=$(cat $cmf)
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mhz=$(echo $hz/1000 | bc)
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else
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data_in=$(grep -E "^cpu MHz" /proc/cpuinfo | head -1)
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regex="^cpu MHz\s*:\s*([0-9]+.[0-9]+)"
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mhz=$(regex_get "$regex" "$data_in")
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mhz=$(approximation $mhz)
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fi
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raw="$raw M$mhz"
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data_in=$(free | grep -E "^Mem:")
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regex="^Mem:\s*([0-9]+)"
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memtotal=$(regex_get "$regex" "$data_in")
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#echo $memtotal
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regex="^Mem:\s*[0-9]+\s*([0-9]+)"
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memused=$(regex_get "$regex" "$data_in")
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#echo $memused
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data_in=$(free | grep -E "^-\/\+ buffers\/cache:")
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regex="^-\/\+ buffers\/cache:\s*([0-9]+)"
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if [ -n "$data_in" ]; then
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memused=$(regex_get "$regex" "$data_in")
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#echo $memused
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fi
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pmem=$(echo -e "scale=2\n($memused/$memtotal)*100" | bc)
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pmem=$(approximation $pmem)
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raw="$raw R$pmem%"
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data_in=$(free | grep -E "^Swap:")
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regex="^Swap:\s*([0-9]+)"
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swaptotal=$(regex_get "$regex" "$data_in")
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if [ "$swaptotal" == "0" ]; then
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pswap=-1
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else
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regex="^Swap:\s*[0-9]+\s*([0-9]+)"
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swapused=$(regex_get "$regex" "$data_in")
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pswap=$(echo -e "scale=2\n($swapused/$swaptotal)*100" | bc)
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pswap=$(approximation $pswap)
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fi
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if [ "$pswap" != "-1" ]; then
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raw="$raw S$pswap%"
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fi
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pcpu=$(cpu_get)
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raw="$raw C$pcpu"
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procs=$(ls -ld /proc/[0-9]* | wc -l)
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raw="$raw P$procs"
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rprocs=$(grep procs_running /proc/stat | cut -d" " -f2)
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raw="$raw/R$rprocs"
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data_in=$(df -h / | tail -1)
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regex="([0-9]+%)\s*\/$"
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pfs=$(regex_get "$regex" "$data_in")
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raw="$raw F/=$pfs"
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data_in=$(grep "00000000" /proc/net/route | head -1)
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regex="^(\w+)\s*"
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interface=$(regex_get "$regex" "$data_in")
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prerx=''
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rounds=2
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while [ "$rounds" -ge "0" ]; do
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if [ -z "$prerx" ]; then
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prerx=$rx
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pretx=$tx
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fi
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data_in=$(grep $interface /proc/net/dev)
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rx=$(echo $data_in | cut -d" " -f2)
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tx=$(echo $data_in | cut -d" " -f10)
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rounds=$((rounds-1))
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done
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diffrx=$(($rx-$prerx))
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difftx=$(($tx-$pretx))
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raw="$raw NU${difftx}B/D${diffrx}B"
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if [ -r /etc/debian_version ]; then
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DV=$(cat /etc/debian_version)
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else
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DV=""
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fi
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raw="D$(date +'%Y%m%d%H%M%S') $raw V$DV"
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}
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check_dt() {
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dt=$value
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dtn=$(date +'%Y%m%d%H%M%S')
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diff=$((dtn-dt))
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[ $diff -gt 1 ] && state=$STATE_CRITICAL
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color_msg $state ${label} $dt
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}
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check_dv() {
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dv=$value
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dv0=$(echo $dv | cut -d"." -f1)
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[ $dv0 -lt 9 ] && state=$STATE_WARNING
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[ $dv0 -lt 8 ] && state=$STATE_CRITICAL
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color_msg $state $label $dv
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}
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check_info() {
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color_msg $STATE_INFO ${label} $value
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}
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check_ram() {
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nvalue=$(echo $value | cut -d"%" -f1)
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color_msg $STATE_INFO ${label} "" 0 1
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[ $nvalue -gt 50 ] && state=$STATE_WARNING
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[ $nvalue -gt 75 ] && state=$STATE_CRITICAL
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color_msg $state "" $value
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}
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check_swap() {
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nvalue=$(echo $value | cut -d"%" -f1)
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color_msg $STATE_INFO ${label} "" 0 1
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if [ "$nvalue" != "Noswap" ]; then
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[ $nvalue -gt 20 ] && state=$STATE_WARNING
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[ $nvalue -gt 40 ] && state=$STATE_CRITICAL
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fi
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color_msg $state "" $value
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}
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check_cpu() {
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cpus=$(cat /proc/cpuinfo | grep processor | wc -l)
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color_msg $STATE_INFO ${label} ${cpus}= 0 1
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nvalue=$(echo $value | cut -d"%" -f1)
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[ $nvalue -gt 50 ] && state=$STATE_WARNING
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[ $nvalue -gt 75 ] && state=$STATE_CRITICAL
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color_msg $state "" $value
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}
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check_procs() {
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subvalue1=$(echo $value | cut -d"/" -f1)
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subvalue2=$(echo $value | cut -d"/" -f2)
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subsubvalue1=${subvalue2:0:1}
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subsubvalue2=${subvalue2:1}
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#subsubvalue1=$(echo $subvalue2 | cut -d"=" -f1)
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#subsubvalue2=$(echo $subvalue2 | cut -d"=" -f2)
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color_msg $STATE_INFO ${label} "" 0 1
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[ $subvalue1 -gt 250 ] && state=$STATE_WARNING
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[ $subvalue1 -gt 300 ] && state=$STATE_CRITICAL
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color_msg $STATE_OK "" ${subvalue1}
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color_msg $STATE_INFO "" \/${subsubvalue1}=
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state=$STATE_OK
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[ $subsubvalue2 -gt 5 ] && state=$STATE_WARNING
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[ $subsubvalue2 -gt 10 ] && state=$STATE_CRITICAL
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#state=$STATE_CRITICAL #4TEST
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color_msg $state "" $subsubvalue2
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}
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check_fs() {
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subvalue1=$(echo $value | cut -d"=" -f1)
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subvalue2=$(echo $value | cut -d"=" -f2)
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nsubvalue=$(echo $subvalue2 | cut -d"%" -f1 | cut -d"." -f1)
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color_msg $STATE_INFO ${label} ${subvalue1}= 0 1
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[ $nsubvalue -gt 80 ] && state=$STATE_WARNING
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[ $nsubvalue -gt 90 ] && state=$STATE_CRITICAL
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#state=$STATE_UNKNOWN #4test
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color_msg $state "" $subvalue2
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}
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convert_to_bytes() {
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human=$1
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numbers=$(echo "$human" | sed 's/\([0-9.]*\).*/\1/')
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measure=$(echo "$human" | sed 's/[0-9.]*\(.*\)/\1/')
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mult=1024
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# Mib tested on:
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# http://www.matisse.net/bitcalc/?input_amount=1000&input_units=megabits
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case $measure in
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Mib) bytes=$(echo -e "($numbers/8)*$mult*$mult\n" | bc);;
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B) bytes=$numbers;;
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KiB) bytes=$(echo -e "$numbers*$mult\n" | bc);;
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MiB) bytes=$(echo -e "$numbers*$mult*$mult\n" | bc);;
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GiB) bytes=$(echo -e "$numbers*$mult*$mult*$mult\n" | bc);;
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esac
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#echo "human = $human numbers = $numbers measure = $measure --> $bytes"
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echo $bytes
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}
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check_net() {
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#UP=97B/DN=149B
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subvalue1=$(echo $value | cut -d"/" -f1)
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subvalue2=$(echo $value | cut -d"/" -f2)
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subsubvalue1=${subvalue1:1}
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subsubvalue2=${subvalue2:1}
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#subsubvalue1=$(echo $subvalue1 | cut -d"=" -f2)
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#subsubvalue2=$(echo $subvalue2 | cut -d"=" -f2)
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#echo "(${subvalue1}|${subvalue2})"
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#echo "(${subsubvalue1}|${subsubvalue2})"
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ethtool=/sbin/ethtool
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speed=""
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if [ -x /sbin/iw ]; then
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speed=$(iw dev $interface link | grep bitrate | cut -d":" -f2)ç
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speed=$(echo $speed | cut -d" " -f1)
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speed=$(echo $speed | cut -d"." -f1)
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fi
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if [ -z "$speed" ]; then
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if [ -x $ethtool ]; then
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speed=$($ethtool $interface 2>/dev/null | grep Speed | sed 's/.*: \([0-9]*\)M.*/\1/')
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fi
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fi
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if [ -z "$speed" ] ; then
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speed=1000 #default speed of interface
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fi
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bytes_interface=$(convert_to_bytes ${speed}Mib)
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bytes1=$(convert_to_bytes ${subsubvalue1})
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bytes2=$(convert_to_bytes ${subsubvalue2})
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bytes_usage=$(echo -e "$bytes1+$bytes2\n" | bc)
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p=$(echo -e "scale=2\n$bytes_usage/$bytes_interface\n" | bc)
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p=$(echo -e "$p*100\n" | bc)
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nvalue=$(echo $p | cut -d"." -f1)
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#echo $bytes_usage $bytes_interface $p $nvalue
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color_msg $STATE_INFO ${label} $value=
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[ $nvalue -gt 75 ] && state=$STATE_WARNING
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[ $nvalue -gt 80 ] && state=$STATE_CRITICAL
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#bytesX=$(echo -e "$bytes_usage/1240\n" | bc)
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#color_msg $state "" "$p%($bytes1 + $bytes2 = $bytes_usage ~ $bytesX K)"
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color_msg $state "" $p%
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}
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raw_system() {
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line=" ${line}"
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short=$(echo $host | cut -d"." -f1)
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color_msg $bstate "" "[SYSTEM:${short}]" 1
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}
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time_usage() {
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datehour_now=$(date +'%Y-%m-%d %H:%M:%S')
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diff=$(diff_seconds "$datehour_when" "$datehour_now")
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diff_human=$(convert_from_seconds_to $diff)
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color_msg $STATE_INFO T "$diff_human"
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}
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raw_check() {
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# D20180523205025 U18h37m34s M2295 R11% C4=1% P97/R1 F/38% NU0B/D0B=0% V9.4 E12345 T1s
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echo $raw | tr "[ ]" "[\n]" | \
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while read linea; do
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label=${linea:0:1}
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value=${linea:1}
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#label=$(echo $linea | cut -d":" -f1)
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#value=$(echo $linea | cut -d":" -f2)
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state=$STATE_OK
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case $label in
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D) check_dt;;
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V) check_dv;;
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U|M) check_info;;
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N) check_net;;
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R) check_ram;;
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S) check_swap;;
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C) check_cpu;;
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P) check_procs;;
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F) check_fs;;
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*) echo $label
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echo -e "\t$value";;
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esac
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line="${line} "
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done
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#raw_system
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time_usage
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}
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utils=/usr/local/npres/lib/utils.bash
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[ -x $utils ] || exit 1
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. $utils
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stc=/usr/local/npres/lib/super-tiny-colors.bash
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[ -x $stc ] || exit 1
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. $stc
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set +m
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shopt -s lastpipe
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datehour_when=$(date +'%Y-%m-%d %H:%M:%S')
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if [ -n "$1" ]; then
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host=$1
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else
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host=$(get_hostname)
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fi
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STATE_OK=0
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STATE_WARNING=1
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STATE_CRITICAL=2
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STATE_UNKNOWN=3
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STATE_DEPENDENT=4
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STATE_INFO=5
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INVERT=1
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bstate=$STATE_OK
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status_type="OK"
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base=/usr/local/npres
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raw_get
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if [ "$2" == "nagios" ]; then
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echo "$status_type - ${raw}"
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else
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raw_check
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echo -e "$line"
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fi
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exit $bstate
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