PhpWatchDog

installation

1. unpack the downloaded archive
   # tar jxvf phpwatchdog-*.tar.bz2
2. enter into phpwatchdog/ directory and edit the config file (config.php)
   # cd phpwatchdog
# nano config.php
   Note: here you can see nano, that is an easy to use text editor, but I strongly encourage to learn to use vim (the enhanced version of vi)
3. put your servers into config.php
   $i++;
$config['Servers'][$i]['host'] = '66.35.250.203';
$config['Servers'][$i]['server_name'] = 'www.sourceforge.net';
$config['Servers'][$i]['service'][1] = '80';
$config['Servers'][$i]['service'][2] = '443';
   Every server configuration block must begin with the line "$i++;"
4. customize your email account for alert reporting into config.php
5. fire up your browser and go to phpwatchdog installation's path

You can schedule the execution of this script putting a similar command into /etc/cron.hourly/ /usr/bin/php-cgi -q /path/of/phpwatchdog/index.php > /dev/null
or using lynx
lynx -dump http://webhost/path/of/phpwatchdog/index.php > /dev/null 2>&1
or with wget
wget -O /dev/null http://webhost/path/of/phpwatchdog/index.php > /dev/null 2>&1

The directory tools contains some useful scripts:
chk_socket2.pl - it's a Perl script used to check the service status if PHP mode is disabled
generate.sh - it's a bash script used to generate (with the help of generate.awk) a configuration block from nmap output
sh generate.sh
Usage:
generate.sh IPADDR SERVERNAME
eg:
generate.sh 192.168.0.1 MailServer.com