ZFS is ready for your Linux desktop

 News, Pills  8 Responses »
Apr 102013
 

As first thing a small lesson about what’s ZFS:

ZFS is a combined file system and logical volume manager designed by Sun Microsystems. The features of ZFS include protection against data corruption, support for high storage capacities, integration of the concepts of filesystem and volume management, snapshots and copy-on-write clones, continuous integrity checking and automatic repair, RAID-Z and native NFSv4 ACLs. ZFS is implemented as open-source software, licensed under the Common Development and Distribution License (CDDL). The ZFS name was registered as a trademark of Oracle until September 20, 2011

 

And now after more than two years in the experimental stage, the ZFS file system for Linux is ready for widespread use.
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4 open source software to analyse big quantity of log files

 Article, Recensioni  No Responses »
Dec 022012
 

Logging is a critical thing for all system administrators, if you log too much and you don’t manage the files you could fill up a partition or even worst stop some service, if you don’t log enough you’ll lose information when something goes wrong, in general a good solution for this is to send all the logs to a central server that will store for the time you need them, and keep just 1,2 days of log into the local machine.

You could do this configuration easily with rsyslog or syslog-ng to send/receive the logs and logrotate to rotate the files locally on your machines, today I want to show you some open source programs that can receive the logs, store them on filesystem or database and analyse them presenting the results via Web dashboards.

These are large applications most suited for big company, or in general to everyone that want to keep and manage a lot of data they are: Apache Flume, Logstash, Greylog2 and Scribe

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Everything you need to know about APC (Alternate PHP cache)

 Howto  No Responses »
Jul 142012
 

If you are a system administrator and you want to push the performance of your PHP website such as Drupal, WordPress or wrote by you or other programmers, there are good chances that you’ve heard about the Alternate PHP Cache or simply APC.

The Alternative PHP Cache (APC) is a free and open opcode cache for PHP. Its goal is to provide a free, open, and robust framework for caching and optimizing PHP intermediate code.

That everything you’ll read about APC on the php.net site, and i think is not enough in comparison to the huge boost of performance that this small component can give you, for some quick facts check the tests done by Guillermo Garron on his website.

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The Best Filesystem for an external hard disk of 1TB with cross platform support.

Disks are becoming cheaper and so it’s becoming common to have on our desk an external (usually USB) hard drive with a size of 1TB or more. Now, once that we bring at home our new gadget the first question for us is: “which Filesystem should i use with this big disk ?” There are [...]

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Introduction to EncFS, Encrypted Filesystem

EncFS provides an encrypted filesystem in user-space. It runs without any special permissions and uses the FUSE library and Linux kernel module to provide the filesystem interface. EncFS is open source software, licensed under the GPL. As with most encrypted filesystems, Encfs is meant to provide security against off-line attacks; ie your notebook or backups [...]

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