Chronosbox

#!/bin/sh
# This script send ICMP requests for each server on SERVIDORES list and sends
# emails for emails in LISTA_EMAILS list why one of servers doesn't reply
# You only receive alerts if in last time that script request server we have a success reply
# or if we not tested server yet.
#
# Author: Felipe Rafael Prenholato - chronos@gentoobr.org
# IRC: nick chronos at irc.freenode.net
# Date: 21 de Junho de 2006.
#
# This script is under GPLv2. Read it at http://www.gnu.org/licenses/gpl-2.0.txt.
# Any changes please send me a mail :).
#
 
# IP or name of servers to test
SERVIDORES="elise prime odissey"
 
# emailo to send alerts
LISTA_EMAILS="chronos@gentoobr.org philipe_rp@yahoo.com.br"
 
# date format to send in email
data=$(date +"%T de %d/%m/%Y")
 
# this function sends ping
ping_server() {
 
local pingreturn
local serversts
local TMPFILE
local server
 
server=$1
TMPFILE="/tmp/ping_$server.tmp"
 
# Debug
#echo "Server: $server"
#echo "Temp file: $TMPFILE"
 
# ping and get return
ping -c3 $server &>/dev/null;
pingreturn=$?;
 
# 0 means ok
if [ "$pingreturn" == "0" ]
then
echo "1" > $TMPFILE
fi
 
# 1 means problems
if [ "$pingreturn" == "1" ]
then
 
if ! [ -e $TMPFILE ]
then
echo "1" > $TMPFILE
fi
 
serversts=$(cat $TMPFILE)
 
# send mail if have problems
if [ "$serversts" == "1" ]
then
 
echo "0" > $TMPFILE
msg="Servidor $server fora do ar em $data. Contatar responsavéis."
ass="Servidor $server fora do ar."
LC_ALL="en_US.ISO-8859-1" echo "$msg" | mail -s "$ass" $LISTA_EMAILS
fi
 
fi
 
}
 
# roda ping_server para cada servidor.
for e in $(echo $SERVIDORES);
do
ping_server $e;
done