WebSite Monitoring Simple .!

First of all create one /opt/monitoring.rb and /home/sites.txt
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#!/usr/bin/ruby

require 'net/http'
require 'net/smtp'


File.open("/home/sites.txt").each { |line|
# get rid of CRLF
line.chomp!

next if(line[0..0] == '#' || line.empty?)

# url, emails = line.split(' ')
# emails = emails.split(",")

url= line.split(' ')

# check if http:// was in the url if not add it in there
# url.insert(0, "http://") unless(url.match(/^http\:\/\//))

# Get the HTTP_RESPONSE from the site we are checking
res = Net::HTTP.get_response(URI.parse(url.to_s))

# Check the response code and send an email if the code is bad
unless(res.code =~ /2|3\d{2}/ ) then
from = "shrikant.lokhande@gmail.com"
message = "From: shrikant.lokhande@gmail.com\nSubject: #{url} Unavailable\n\n#{url} - #{res.code} - #{res.message}\nHTTP Version - #{res.http_version}\n\n"
begin
Net::SMTP.start("smtp server",25,"domain name","username","passwd","login") do |smtp|
smtp.send_message(message, from, 'youremail@gmail.com')
end
rescue Exception => e
print "Exception occured: " + e
end
end
}
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vi /home/sites.txt

http://www.website.com
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Add script in cron like :
* * * * * ruby /opt/monitoring.rb

from another server or same server. but prefer from another server. configure SMTP and add your email id in the script for alert.

Thats it.!

Script for Mysql Backup on Linux.

#!/bin/bash
# USER VARIABLES
TIMESTAMP=$(date +%Y-%m-%d)
MYSQLUSER=root
MYSQLPWD=passwd
MYSQLHOST=localhost
# PATH VARIABLES
MK=/bin/mkdir
GREP=/bin/grep
MYSQL=/usr/bin/mysql
MYSQLDUMP=/usr/bin/mysqldump
# CREATE MYSQL BACKUP
# Create new backup dir
$MK /backup/mysqlbackup/mysqlback_$TIMESTAMP
#Dump new files
for i in $(echo 'SHOW DATABASES;' | $MYSQL -u$MYSQLUSER -p$MYSQLPWD -h$MYSQLHOST|$GREP -v '^Database$'); do
run $MYSQLDUMP -u$MYSQLUSER -p$MYSQLPWD -h$MYSQLHOST $i >/backup/mysqlbackup/mysqlback_$TIMESTAMP/$i.sql
echo "$i"
done

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run this script in cron like
* 1 * * * /usr/bin/mysqlbackup