Sep 132014
 

Systemd
Article by Stuart Burns first posted on Openlogic.com

With Red Hat Enterprise Linux 7 released and CentOS version 7 newly unveiled, now is a good time to cover systemd, the replacement for legacy System V (SysV) startup scripts and runlevels. Red Hat-based distributions are migrating to systemd because it provides more efficient ways of managing services and quicker startup times. With systemd there are fewer files to edit, and all the services are compartmentalized and stand separate from each other. This means that should you screw up one config file, it won’t automatically take out other services.

Systemd has been the default system and services manager in Red Hat Fedora since the release of Fedora 15, so it is extensively field-tested. It provides more consistency and troubleshooting ability than SysV – for instance, it will report if a service has failed, is suspended, or is in error. Perhaps the biggest reason for the move to systemd is that it allows multiple services to start up at the same time, in parallel, making machine boot times quicker than they would be with legacy runlevels.

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Aug 232014
 

KernelPanic Luckily this problem don’t happen so frequently, at least using stable kernel and distributions, but sometime your beloved Linux could go in “Kernel Panic”.

A kernel panic is an action taken by an operating system upon detecting an internal fatal error from which it cannot safely recover. The term is largely specific to Unix and Unix-like systems; for Microsoft Windows operating systems the equivalent term is “stop error” (or, colloquially BSOD “Blue Screen of Death”).

The kernel routines that handle panics, known as panic() in AT&T-derived and BSD Unix source code, are generally designed to output an error message to the console, dump an image of kernel memory to disk for post-mortem debugging and then either wait for the system to be manually rebooted, or initiate an automatic reboot.

Wikipedia

The default it’s to wait, so if this happen on one of your servers and you don’t notice it all its services could stay down for some time, while using an automatic reboot the problem could be solved quickly.

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Jun 102014
 

slackarchArticle by Velimir Baksa

On many sites there are a lot of information about Ubuntu or its successor, Mint, these distributions are excellent, very good for those who have never seen anything on Linux, but maybe someone could be more interested in having a greater freedom of action and try something that goes beyond a well-marked path, so what do you think of the GNU/Linux Arch and Slackware distributions ?

Many things are spoken around Arch and Slackware. And also many myths are around surrounding these two distributions, for someone they are hard to install, hard to use, hard for administration, good only for geeks.

Many myths about Arch/Slackware and I should say also Gentoo aren’t true. Both, Arch and Slackware, bring only the best to the operating system experience. BSD elegance and Linux kernel. Great customization, great user experience and unique philosophy. Today quality and simplicity don’t go together. But let’s take a look at some of the main aspects of a GNU/linux Distribution.
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8 Simple To Follow Tips To Secure Your Apache Web Server

8 Simple To Follow Tips To Secure Your Apache Web Server

Article by: Kerry Blake Apache is the most widely used Web server on the Internet. It was developed to work in Unix environment, but was ported to other server operating system like Windows. The Apache web server serves millions of websites and web-applications. A wide range of authentication schemes and a lot of language interfaces [...]

Productivity boosting with open source applications

Productivity is very important. With a boost in productivity we save time and we get more work done in short period. That is why today in factories the production lines are automated. Productivity boosting is also important in everyday computer usage. No matter if you are just an regular desktop user, power user, developer or [...]