Created
October 8, 2017 13:16
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Shell script to submit "metrics" to graphite.
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| #!/bin/sh | |
| # | |
| # About | |
| # ----- | |
| # This script sends simple system-metrics to a remote graphite server. | |
| # | |
| # | |
| # Metrics | |
| # ------- | |
| # The metrics currently include: | |
| # | |
| # * System uptime. | |
| # * Percentages of disk fullness for all mount-points. | |
| # * Swap In/Out status. | |
| # * Process-count and fork-count. | |
| # | |
| # Usage | |
| # ----- | |
| # Configure the host/port of the graphite server in the file | |
| # via /etc/default/graphite_send: | |
| # | |
| # echo HOST=1.2.3.4 > /etc/default/graphite_send | |
| # echo PORT=2004 >> /etc/default/graphite_send | |
| # | |
| # | |
| # License | |
| # ------- | |
| # Copyright (c) 2014 by Steve Kemp. All rights reserved. | |
| # | |
| # This script is free software; you can redistribute it and/or modify it under | |
| # the same terms as Perl itself. | |
| # | |
| # The LICENSE file contains the full text of the license. | |
| # | |
| # | |
| # Setup a sane path | |
| # | |
| PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin | |
| export PATH | |
| # | |
| # If we have a configuration file then load it, if not then abort. | |
| # | |
| if [ -e /etc/default/graphite_send ]; then | |
| . /etc/default/graphite_send | |
| else | |
| echo "You must configure the remote host:port to send data to" | |
| echo "Please try:" | |
| echo " " | |
| echo " echo HOST=1.2.3.4 > /etc/default/graphite_send" | |
| echo " echo PORT=2003 >>/etc/default/graphite_send" | |
| exit 1 | |
| fi | |
| ### | |
| ## | |
| ## A simple function to send data to a remote host:port address. | |
| ## | |
| ### | |
| send() | |
| { | |
| if [ ! -z "$VERBOSE" ]; then | |
| echo "Sending : $1" | |
| fi | |
| # | |
| # If we have nc then send the data, otherwise alert the user. | |
| # | |
| if ( which nc >/dev/null 2>/dev/null ); then | |
| echo $1 | nc $HOST $PORT --send-only -w1 -t1 | |
| else | |
| echo "nc (netcat) is not present. Aborting" | |
| fi | |
| } | |
| ### | |
| ## | |
| ## Collect metrics, and send them. | |
| ## | |
| ## We aim to be generic here, and allow missing files/tools to | |
| ## guide us on the metrics to send. | |
| ## | |
| ## i.e. We shoudln't assume things are present because this might | |
| ## run on Debian, CentOS, etc. | |
| ## | |
| #### | |
| # | |
| # Get the current hostname | |
| # | |
| host=$(hostname --short) | |
| # | |
| # The current time - we want all metrics to be reported at the | |
| # same time. | |
| # | |
| time=$(date +%s) | |
| ## | |
| ## Fork-count | |
| ## | |
| if [ -e /proc/stat ]; then | |
| forked=`awk '/processes/ {print $2}' /proc/stat` | |
| send "$host.process.forked $forked $time" | |
| fi | |
| ## | |
| ## Process-count | |
| ## | |
| if ( which ps >/dev/null 2>/dev/null ); then | |
| pcount=`ps -Al | wc -l` | |
| send "$host.process.count $pcount $time" | |
| fi | |
| ## | |
| ## The percentage of disk free on each mount-point | |
| ## | |
| df --portability 2>/dev/null | grep ^/ | while read i | |
| do | |
| name=$(echo $i | awk '{print $1}' | awk -F/ '{print $NF}') | |
| perc=$(echo $i | awk '{print $5}' | tr -d \% ) | |
| send "$host.mount.$name $perc $time" | |
| done | |
| ## | |
| ## Swap | |
| ## | |
| if ( which vmstat >/dev/null 2>/dev/null ); then | |
| INN=`vmstat -s | grep 'pages swapped in' | awk '{print $1}'` | |
| OUT=`vmstat -s | grep 'pages swapped out' | awk '{print $1}'` | |
| send "$host.swap.in $INN $time" | |
| send "$host.swap.out $OUT $time" | |
| fi | |
| ## | |
| ## Uptime. | |
| ## | |
| if [ -e /proc/uptime ]; then | |
| uptime=$(awk -F\. '{print $1}' < /proc/uptime) | |
| send "$host.uptime $uptime $time" | |
| fi | |
| ## | |
| ## Load average | |
| ## | |
| if [ -e /proc/loadavg ]; then | |
| avg1=$(awk '{print $1}' < /proc/loadavg) | |
| send "$host.load $avg1 $time" | |
| fi | |
| ## | |
| ## Number of login sessions | |
| ## | |
| if ( which w >/dev/null 2>/dev/null ); then | |
| users=$(w --no-header | wc -l) | |
| send "$host.users $users $time" | |
| fi | |
| ## | |
| ## SPAM vs. HAM for qpsmtpd | |
| ## | |
| if [ -e /var/log/qpsmtpd/terse.log ]; then | |
| spam=$(grep -v "accepted and queued" /var/log/qpsmtpd/terse.log | wc -l) | |
| ham=$(grep "accepted and queued" /var/log/qpsmtpd/terse.log | wc -l) | |
| send "$host.mail.spam $spam $time" | |
| send "$host.mail.ok $ham $time" | |
| fi | |
| ## | |
| ## For each interface transmit/receive in bytes | |
| ## | |
| ## This is nasty so we only send data if we're sure about it. | |
| ## | |
| for i in $(/sbin/ifconfig | grep encap. | awk '{print $1}'); do | |
| rx=$(/sbin/ifconfig $i | grep "RX bytes" | awk '{print $2}' | awk -F: '{print $2}') | |
| tx=$(/sbin/ifconfig $i | grep "TX bytes" | awk '{print $2}' | awk -F: '{print $2}') | |
| if [ ! -z "$rx" ]; then | |
| send "$host.net.$i.rx $rx $time" | |
| fi | |
| if [ ! -z "$tx" ]; then | |
| send "$host.net.$i.tx $tx $time" | |
| fi | |
| done | |
| ## | |
| ## If we have ntpdate installed look for the skew. | |
| ## | |
| if ( which ntpdate >/dev/null 2>/dev/null); then | |
| skew=$(ntpdate -q -u pool.ntp.org | grep adjust | awk '{print $(NF-1)}' | tr -d -) | |
| send "$host.ntp-skew $skew $time" | |
| fi | |
| ## | |
| ## If we have dpkg/apt-get then show package counts and pending | |
| ## upgrades. | |
| ## | |
| if ( which dpkg >/dev/null 2>/dev/null ); then | |
| packages=$(dpkg --list |grep ^ii | wc -l) | |
| send "$host.packages.installed $packages $time" | |
| fi | |
| if ( which apt-get >/dev/null 2>/dev/null ); then | |
| pending=$(apt-get upgrade --simulate | grep ^Inst | wc -l ) | |
| send "$host.packages.pending-updates $pending $time" | |
| fi |
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