I would need and adivce! Is there any product that checks the server uptime and it goes down sends my host an email to reboot the server? the server goes down often when I sleep and it`s down 8 hours or so. It's goung on my nerves because my users are complaining. thanks for your answers.
Don't really understand what you means when say 'server is down'... If it's only the web server is down while the real server (web hosting, shared, vps, ded. server) is up, you can set cron job to automatic start apache when it dies/down. If you server is down very often (and don't automatic restart. simply died ), you'd better contact your hosting provider
There are lot of server monitoring tools like nagios which can be configured to send mails even when a particular service is down. We have configured similar things for our clients
You can install monitoring software like nagios as well as you can purchase the service to check site uptime. Purchase site uptime service for any one domain hosted on your server and set notification email address to your provider so that they can be informed whenever site goes down and they can take a look.
http://www.rfxn.com/projects/system-integrity-monitor/ this is what you need i think it will monitor your server, it will restart services wich go down and will email you about all problems reguarding apache, sql, dns etc, you can costumize etc.