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Beau
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‎check_apache_stats.sh

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#!/bin/bash
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##
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## Author: Beau Bilyeu ([email protected])
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## Usage: ./check_apache_status.sh [host=127.0.0.1] [port=80] [uri=/server-status?auto]
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##
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## (none) = 127.0.0.1:80/server-status?auto
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## host = $host:80/server-status?auto
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## port = $host:$port/server-status?auto
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## uri = $host:$port/$uri
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##
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## Noteable Reference: https://httpd.apache.org/docs/2.4/mod/mod_status.html
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##
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helpArgs="/(-h|-\?|--help|--\?)/i"
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trueArgs="/(t|1|True)/i"
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falseArgs="/(f|0|False)/i"
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portStatus="open"
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## process arguments, or default values
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host=""
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if [[ "$1" ]]; then host="$1"; else host="127.0.0.1"; fi
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port=""
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if [[ "$2" ]]; then port="$2"; else port="80"; fi
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uri=""
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if [[ "$3" ]]; then uri="$3"; else uri="/server-status?auto"; fi
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#echo "DEBUG: host [$host], port [$port], uri [$uri], 1 [$1], 2 [$2], 3 [$3]"
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## print help string and exit
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printHelp()
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{
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echo -e "Usage: $0 [host=127.0.0.1] [port=80] [uri=/server-status?auto]\n\t(no parameters) = 127.0.0.1:80/server-status?auto\n\thost = \$host:80/server-status?auto\n\tport = \$host:\$port/server-status?auto\n\turi = \$host:\$port/\$uri\n"
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}
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## ensure we have a valid hostname/IP and port
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if [[ $1 =~ $helpArgs ]]; then
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printHelp
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exit 0
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elif [ -z "$host" ] || [ "$host" == "" ]; then
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echo -e "UNKNOWN: Blank hostname or IP address passed.\n"
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printHelp
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exit 3
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elif [ -z "$port" ] || [ "$port" == "" ]; then
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echo -e "UNKNOWN: Blank port passed. \n"
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printHelp
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exit 3
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fi
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## check port
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{ exec 3<>"/dev/tcp/$host/$port"; } > /dev/null 2>&1 || portStatus="closed"
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if [ "$portStatus" == "open" ]; then
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## check http status code
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retCode=$(curl -s -o /dev/null -w "%{http_code}" "http://$host:$port/$uri")
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if [ "$retCode" == "200" ]; then
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stats=$(curl -s "http://$host:$port/$uri")
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IFS=$'\n'; read -r -d '' -a row <<< "$stats"
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# 1. Parse key:value pairs
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# 2. Parse "Scoreboard: ..." string, counting symbols (. _ S R W K D C L G I) and total length
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for r in "${row[@]}"; do
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IFS=' ' read -r -a field <<< "$r"
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if [[ $r =~ 'Total Accesses' ]]; then
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value="${field[2]// }"
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perfData="${perfData} totalAccesses=$value;"
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elif [[ $r =~ 'Total kBytes' ]]; then
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value="${field[2]// }"
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perfData="${perfData} totalKBs=${value}KB;"
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elif [[ $r =~ 'CPULoad' ]]; then
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value="${field[1]// }"
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value=$(bc <<< " scale=2; $value * 100.0 " 2>/dev/null)
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value=$(printf %0.2f "$value")
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perfData="${perfData} cpuLoad=$value%;"
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elif [[ $r =~ 'Uptime' ]]; then
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value="${field[1]// }"
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perfData="${perfData} uptime=${value}s;"
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elif [[ $r =~ 'ReqPerSec' ]]; then
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value="${field[1]// }"
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value=$(printf %0.2f "$value")
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perfData="${perfData} requestsPerSec=$value;"
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elif [[ $r =~ 'BytesPerSec' ]]; then
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value="${field[1]// }"
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value=$(printf %0.2f "$value")
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perfData="${perfData} bytesPerSec=${value}B;"
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elif [[ $r =~ 'BytesPerReq' ]]; then
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value="${field[1]// }"
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value=$(printf %0.2f "$value")
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perfData="${perfData} bytesPerRequest=${value}B;"
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elif [[ $r =~ 'BusyWorkers' ]]; then
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value="${field[1]// }"
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perfData="${perfData} busyWorkers=$value;"
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elif [[ $r =~ 'IdleWorkers' ]]; then
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value="${field[1]// }"
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perfData="${perfData} idleWorkers=$value;"
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elif [[ ${field[0]} =~ Scoreboard ]]; then
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sb="${field[1]// }"
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workersOpen=$(tr -dc '.' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersOpen" ] || [ "$workersOpen" == "" ]; then workersOpen=0; fi
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perfData="${perfData} workersOpen=$workersOpen;"
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workersWaiting=$(tr -dc '_' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersWaiting" ] || [ "$workersWaiting" == "" ]; then workersWaiting=0; fi
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perfData="${perfData} workersWaiting=$workersWaiting;"
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workersStarting=$(tr -dc 'S' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersStarting" ] || [ "$workersStarting" == "" ]; then workersStarting=0; fi
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perfData="${perfData} workersStarting=$workersStarting;"
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workersReading=$(tr -dc 'R' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersReading" ] || [ "$workersReading" == "" ]; then workersReading=0; fi
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perfData="${perfData} workersReading=$workersReading;"
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workersSending=$(tr -dc 'W' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersSending" ] || [ "$workersSending" == "" ]; then workersSending=0; fi
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perfData="${perfData} workersSending=$workersSending;"
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workersKeepalive=$(tr -dc 'K' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersKeepalive" ] || [ "$workersKeepalive" == "" ]; then workersKeepalive=0; fi
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perfData="${perfData} workersKeepalive=$workersKeepalive;"
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workersDNSlookup=$(tr -dc 'D' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersDNSlookup" ] || [ "$workersDNSlookup" == "" ]; then workersDNSlookup=0; fi
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perfData="${perfData} workersDNSlookup=$workersDNSlookup;"
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workersLosing=$(tr -dc 'C' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersLosing" ] || [ "$workersLosing" == "" ]; then workersLosing=0; fi
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perfData="${perfData} workersLosing=$workersLosing;"
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workersLogging=$(tr -dc 'L' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersLogging" ] || [ "$workersLogging" == "" ]; then workersLogging=0; fi
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perfData="${perfData} workersLogging=$workersLogging;"
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workersFinishing=$(tr -dc 'G' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersFinishing" ] || [ "$workersFinishing" == "" ]; then workersFinishing=0; fi
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perfData="${perfData} workersFinishing=$workersFinishing;"
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workersIdleCleanup=$(tr -dc 'I' <<<"$sb" | awk '{ print length; }' 2>/dev/null);
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if [ -z "$workersIdleCleanup" ] || [ "$workersIdleCleanup" == "" ]; then workersIdleCleanup=0; fi
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perfData="${perfData} workersIdleCleanup=$workersIdleCleanup;"
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perfData="${perfData} workersTotal=${#sb};"
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fi
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done
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echo "OK: apache status|$perfData"
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exit 0
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else
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echo "WARNING: http://$host:$port/$uri returned a status code '$retCode' instead of 200."
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exit 1
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fi
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else
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echo "CRITICAL: http://$host:$port is not responding."
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exit 2
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fi
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echo "UNKNOWN: Could not reach http://$host:$port"
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exit 3

‎check_fds_by_procname.sh

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#!/bin/bash
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##
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## Author: Beau Bilyeu ([email protected])
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## Usage: ./check_fds_by_procname.sh <username> <process_name>]
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##
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## Attempts to find process IDs by string, then issues cat against
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## /proc/$PID/fd to sum up total FDs being used.
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pOwner=""
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pName=""
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count=0
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if [ "$#" != "2" ]; then
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echo "Usage: $0 <username> <process_name>"
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exit 0
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elif [ "$#" == "2" ]; then
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pOwner="$1" ## read in username
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pName="$2" ## read in proc name
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fi
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## get PID(s)
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PID=$(pgrep -U "$pOwner" -u "$pOwner" -f "$pName")
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if [ -z "$PID" ] || [ "$PID" == "0" ]; then
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echo "UNKNOWN: Could not locate pids for '$pName' by user '$pOwner'."
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exit 3
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fi
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## loop through pid(s) and get values
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for i in $PID; do
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count=$((count + $(ls -lah "/proc/$i/fd" | wc -l))); ## append to count variable
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done
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## output
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echo "OK: User $pOwner has $count $pName fds|${pName}_fds=$count"

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