Alert via SMS on power failure and hibernate the system


When using a system to host your important (or critical) operations, being able to get informed of issues while you’re away is a very handy function. Email is good for notifications, but it isn’t always fast enough (and constant checks drain battery power).

SMS on the other hand, is an almost instant alert method and although length-limited, should do the job just fine for those very important, must have alerts. For this setup you will need… Continue reading

Quickly limiting access to php scripts using .htaccess


Sometimes one needs to quickly block access to offending scripts – like for instance when a site has been hacked and malicious files have been uploaded to the account and are used to send out spam emails.

Apache provides a simple way to block out files from being accessible to visitors. And as most intrusions involve directly access hacked php files, the bit below will do wonders at blocking out those direct calls while leaving the main site fully functional (sort of). Continue reading

Running VirtualBox headless via web interface on CentOS


VMware Server for Linux was great back in the day. Unfortunately it was discontinued and I’ve been searching for a headless VM manager for running and remotely managing virtual machines on Linux ever since.

VirtualBox seems the best solution for the task so far, as it is capable of running headless on Linux and has and (unofficial but great) web interface to manage it. Continue reading