Articles

Safe Circuit  

Redo Backup backs up complete hard drives locally or over a network. The focus is on simple operation and high reliability in a variety of deployment scenarios.

Kpatch and kGraft  

Two projects by Red Hat and SUSE – Kpatch and kGraft – attempt to patch the kernel with security updates on the fly. We look at features in these two tools and their suitability for production use.

Workaround  

Managing your cluster could be so simple if it weren't so complicated. The object of many an admin's wrath in such cases is often a single component: Pacemaker. Luckily, other open source tools offer alternative options for high availability.

Lightweight  

Want to set up a full-fledged web, file, or proxy server in 10 seconds? No problem with TheSSS, the smallest server suite in the world. The new 8.0 version of this useful Linux distribution weighs in at a mere 30MB.

The Collector  

Collectd 4.3 is a comprehensive monitoring tool with a removable plugin architecture.

Forensic Analysis with Redline and Volatility  

We show you how to dig deep to find hidden and covert processes, clandestine communications, and signs of misconduct on your network.

Central Register  

Centralized user management with LDAP or Active Directory is the standard today, although many prefer to manage user data manually rather than build this kind of infrastructure. In this article, we look at a better approach with OpenLDAP.

Jailbreak: Guard Against Breakouts on Your Virtual Machines  

A common misconception posits that software cannot cause mischief if you lock the system away in a virtual machine, because even if an intruder compromises the web server on the virtual machine, it will only damage the guest. If you believe this, you are in for a heap of hurt.

Memory Hogs  

Even Linux systems with large amounts of main memory are not protected against bottlenecks and potentially drastic performance degradation because of memory shortage. In this article, we investigate the complex causes and test potential solutions.