Shell script to get uptime, disk usage, cpu usage, RAM usage, system load, etc; from multiple Linux servers and output the information on a single server in html format
#!/bin/bash
# Shell script to get uptime, disk usage, cpu usage, RAM usage,system load,etc.
# from multiple Linux servers and output the information on a single server
# in html format. Read below for usage/installation info
# *---------------------------------------------------------------------------*
# * dig_remote_linux_server_information.bash,v0.1, last updated on 25-Jul-2005*
# * Copyright (c) 2005 nixCraft project *
# * Comment/bugs: http://cyberciti.biz/fb/ *
# * Ref url: http://cyberciti.biz/nixcraft/forum/viewtopic.php?t=97 *
# * This script is licensed under GNU GPL version 2.0 or above *
# *---------------------------------------------------------------------------*
# * Installation Info *
# ----------------------------------------------------------------------------*
# You need to setup ssh-keys to avoid password prompt, see url how-to setup
# ssh-keys:
# cyberciti.biz/nixcraft/vivek/blogger/2004/05/ssh-public-key-based-authentication.html
#
# [1] You need to setup correct VARIABLES script:
#
# (a) Change Q_HOST to query your host to get information
# Q_HOST="192.168.1.2 127.0.0.1 192.168.1.2"
#
# (b) Setup USR, who is used to connect via ssh and already setup to connect
# via ssh-keys
# USR="nixcraft"
#
# (c)Show warning if server load average is below the limit for last 5 minute.
# setup LOAD_WARN as per your need, default is 5.0
#
# LOAD_WARN=5.0
#
# (d) Setup your network title using MYNETINFO
# MYNETINFO="My Network Info"
#
# (e) Save the file
#
# Please refer to forum topic on this script:
# Also download the .gif files and put them in your output dir
#
# ----------------------------------------------------------------------------
# Execute script as follows (and copy .gif file in this dir) :
# this.script.name > /var/www/html/info.html
# ============================================================================
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
# SSH SERVER HOST IPS, setup me
# Change this to query your host
Q_HOST="192.168.1.2 127.0.0.1 192.168.1.2"
# SSH USER, change me
USR="nixcraft"
# Show warning if server load average is below the limit for last 5 minute
LOAD_WARN=5.0
# Your network info
MYNETINFO="My Network Info"
#
# if it is run as cgi we can do reload stuff too :D
PBY='Powered by <a href="http://cyberciti.biz/download/">script</a>'
# font colours
GREEN='<font color="#00ff00">'
RED='<font color="#ff0000">'
NOC='</font>'
LSTART='<ul><li>'
LEND='</li></ul>'
# Local path to ssh and other bins
SSH="/usr/bin/ssh"
PING="/bin/ping"
NOW="$(date)"
## functions ##
writeHead(){
echo '<HTML><HEAD><TITLE>Network Status</TITLE></HEAD>
<BODY alink="#0066ff" bgcolor="#000000" link="#0000ff" text="#ccddee" vlink="#0033ff">'
echo '<CENTER><H1>'
echo "$MYNETINFO</H1>"
echo "Generated on $NOW"
echo '</CENTER>'
}
writeFoot(){
echo "<HR><center>$PBY</center>"
echo "</BODY></HTML>"
}
## main ##
writeHead
echo '<TABLE WIDTH=100% BORDER=2 BORDERCOLOR="#000080" CELLPADDING=4 CELLSPACING=4 FRAME=HSIDES RULES=NONE" >'
echo '<TR VALIGN=TOP>'
for host in $Q_HOST
do
#echo '<TD WIDTH=33% BGCOLOR="#0099ff">'
echo '<TD BGCOLOR="#0099ff">'
_CMD="$SSH $USR@$host"
rhostname="$($_CMD hostname)"
ruptime="$($_CMD uptime)"
if $(echo $ruptime | grep -E "min|days" >/dev/null); then
x=$(echo $ruptime | awk '{ print $3 $4}')
else
x=$(echo $ruptime | sed s/,//g| awk '{ print $3 " (hh:mm)"}')
fi
ruptime="$x"
rload="$($_CMD uptime |awk -F'average:' '{ print $2}')"
x="$(echo $rload | sed s/,//g | awk '{ print $2}')"
y="$(echo "$x >= $LOAD_WARN" | bc)"
[ "$y" == "1" ] && rload="$RED $rload (High) $NOC" || rload="$GREEN $rload (Ok) $NOC"
rclock="$($_CMD date +"%r")"
rtotalprocess="$($_CMD ps axue | grep -vE "^USER|grep|ps" | wc -l)"
rfs="$($_CMD df -hT | grep -vE "^Filesystem|shm" \
| awk 'BEGIN{print "<ul>"}{w=sprintf("%d",$6);print "<li>" $7 \
" " $6 \
"(" $2 ")<BR> <img src=\"indicator.gif\" height=\"4\" width=\"" w "\"> \
<BR><img src=\"graph.gif\"> \
<BR>" $4"/"$3 "</li>"}END{ print "</ul>"}')"
rusedram="$($_CMD free -mto | grep Mem: | awk '{ print $3 " MB" }')"
rfreeram="$($_CMD free -mto | grep Mem: | awk '{ print $4 " MB" }')"
rtotalram="$($_CMD free -mto | grep Mem: | awk '{ print $2 " MB" }')"
$PING -c1 $host>/dev/null
if [ "$?" != "0" ] ; then
rping="$RED Failed $NOC"
else
rping="$GREEN Ok $NOC"
echo "<b><u>$rhostname</u></b><BR>"
echo "Ping status: $rping<BR>"
echo "Time: $rclock<BR>"
echo "Uptime: $ruptime <BR>"
echo "Load avarage: $LSTART $rload $LEND"
echo "Total running process: $LSTART $rtotalprocess $LEND"
echo "Disk status:"
echo "$rfs"
echo "Ram/swap status:<ul>"
echo "<li>Used RAM: $rusedram</li>"
echo "<li>Free RAM: $rfreeram</li>"
echo "<li>Total RAM: $rtotalram </li></ul>"
fi
echo "</td>"
done
echo "</tr></table>"
writeFoot
