HPC has a unique set of requirements that might not fit into standard clouds. However, plenty of commercial options, including cloud-like services, provide the advantages of real HPC without the capital expense of buying hardware.
If the Linux server crashes, not only do you need to restore operations, you also need to analyze the problem. What happened? Where is the root of the error? What preventive measures are necessary? A kernel crash dump at the time of the crash can be a big help.
In the old Hyper-V hypervisor from Microsoft, many features for professional use were missing. The new version 3.0 has been significantly improved and is slowly catching up to VMware.
Version 3.1 of the oVirt management platform for virtual infrastructures has recently become available. On Fedora 17, the new release is easy to install and deploy.
Central network storage with clients for any platform are convenient, although the popular designation "cloud" is debatable. Yet, what is the best implementation? We compare three storage cloud solutions.
If you've ever had to test the security of your servers, you've almost certainly come across the ever-flexible Nmap – used by sys admins to help protect their servers and diagnose problems.
Microsoft operating systems are not necessarily regarded as the epitome of computer security, but the free Security Compliance Manager helps enforce some basic hardening measures.
Torn between the challenges of daily IT operations and ambitious projects, admins must allocate their resources wisely. One unspectacular but effective instrument that can help is the Kanban method.
Admins of small businesses who want to cover all their infrastructure requirements with a single server are the target group of small-business servers. In this article, we introduce three Linux distributions that meet this requirement.
Just as subjects must obey their king, all the computers and servers in an organization should follow the administrator's commands. With Rex, you don't even need to leave your admin throne to organize this.
Many admins are responsible for heterogeneous IT environments. Those who want use the popular Bash and GNU tools under Windows can either install the Cygwin compatibility layer or try Gow, the more slender alternative.
SUSE has officially supported Btrfs in Service Pack 2 of its Enterprise Server 11 since February 2012. Oracle followed soon after with Btrfs support in its own Linux. We explore the possibilities of this young filesystem in detail.
A lack of information about your infrastructure can result in faulty system configuration and other difficulties. Automatic discovery of all hosts and services would seem to be the best solution – but can it also prove itself in practice?
Network errors frequently affect many clients and are correspondingly urgent. With the right tools, such as specialized network testers, troubleshooting is much easier.
The programming language Go promises long-term compatibility with the recently released Version 1. Designed for system programming, it does without trendy features and is therefore interesting for anyone allergic to hype.
Although SELinux is designed as a shield rather than a weapon, it still makes many admins wince. This is hard to understand, however, because operation is now uncomplicated, and SE adds enormous value in terms of the security of the entire system.
