NILFS is a new implementation of a log-structured file system (LFS) supporting continuous snapshotting. In addition to versioning capability of the entire file system, users can even restore files mistakenly overwritten or destroyed just a few seconds ago. Since NILFS can keep consistency like conventional LFS, it achieves quick recovery after system crashes.
Sheepdog is a distributed storage system for KVM. It provides highly available block level storage volumes that can be attached to KVM virtual machines. Sheepdog supports advanced volume management features such as snapshot, cloning, and thin provisioning.
AMANDA, the Advanced Maryland Automatic Network Disk Archiver, is a backup system that allows the administrator to set up a single master backup server to back up multiple hosts over network to tape drives/changers or disks or optical media.
I will describe a way to move a XEN domU virtual machine into a KVM virtual machine. Xen stores the machine as one partition in one file. KVM stores the machine as a whole disk.
Start an instance on an internal cloud, then with the same code start another on EC2 or Rackspace. Deltacloud protects your apps from cloud API changes and incompatibilities, so you can concentrate on managing cloud instances the way you want.
UCSniff is a VoIP & IP Video Security Assessment tool that integrates existing open source software into several useful features, allowing VoIP and IP Video owners and security professionals to rapidly test for the threat of unauthorized VoIP and Video Eavesdropping.
Securing your Linux server is important to protect your data, intellectual property, and time, from the hands of crackers (hackers). The system administrator is responsible for security Linux box. In this first part of a Linux server security series, I will provide 20 hardening tips for default installation of Linux system.
The WiKID Strong Authentication System is a key-based two-factor authentication system. It is a flexible, extensible, and secure alternative to tokens, certs and passwords. Application & API support exists for Java, ASP, PHP, Ruby, OpenVPN, TACACS+, etc.
If you use Amazon’s EC2 service and are thinking of migrating your virtual machines to KVM, there’s a howto tutorial available at layerboom’s website. I was contacted by layerboom with this tutorial to share and think it’s useful information you might be searching for someday. I haven’t tested this so I can’t comment on how it works but if you need to do this conversion give this procedure a try and see how it works for you.
NIST describes Cloud Computing as “a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g. networks, servers, storage, applications and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.”
Solr is an open source enterprise search server based on the Lucene Java search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication, a web administration interface and many more features. It runs in a Java servlet container such as Tomcat.
RabbitMQ is a complete and highly reliable Enterprise Messaging system based on the emerging AMQP standard. It is licensed under the open source Mozilla Public License and has a platform-neutral distribution, plus platform-specific packages and bundles for easy installation.
Data deduplication (often called “intelligent compression” or “single-instance storage”) is a method of reducing storage needs by eliminating redundant data. Data deduplication is often used for backup purposes and for virtual machine image storage. lessfs can determine if data is redundant by calculating an unique (192 bit) tiger hash of each block of data that is written. When lessfs has determined that a block of data needs to be stored it first compresses the block with LZO or QUICKLZ compression.
Reducing system power consumption will extend battery life, reduce system temperature and (on some models) reduce system fan noise. Power consumption can be greatly improved from a stock distribution configuration to a fine tuned system. The general rules are :
Wireless networks for businesses, including smaller ones, should always be protected with the enterprise mode of Wi-Fi Protected Access ((WPA or WPA2). It provides stronger encryption to protect against Wi-Fi hackers. Plus it hides the encryption keys from your users, so employees can’t find them stored on their computer and use them maliciously or give them out.
