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System related tutorials

Debian

Linux virtual server on Debian Sarge

Post date: November 29, 2005, 21:11 Category: System Views: 3919 Comments
Tutorial quote: Linux-VServer allows you to create virtual private servers and security contexts which operate like a normal Linux server, but allow many independent servers to be run simultaneously in one box at full speed. All services, such as ssh, mail, Web, and databases, can be started on such a VPS, without modification, just like on any real server. Each virtual server has its own user account database and root password and doesn't interfere with other virtual servers.
FreeBSD

Using Software RAID-1 with FreeBSD

Post date: November 29, 2005, 03:11 Category: System Views: 4352 Comments
Tutorial quote: Have you ever needed a software RAID solution for a low-end server install? Perhaps you've wanted your workstation to take advantage of the redundancy provided by a disk mirror without investing in a hardware RAID controller. Has a prior painful configuration experience turned you off software RAID altogether on Unix systems?


Since 5.3-Release, FreeBSD comes with gmirror(8), which allows you to easily configure a software RAID 1 solution. While tutorials on gmirror exist, I found them to require either manual calculations of partition sizes with bsdlabel or the use of a fix-it floppy on an existing system.

It made more sense to me to configure RAID during the install of the operating system. I also wanted a procedure that was easy to follow and didn't introduce human error in the form of a math miscalculation. After cobbling together the available documentation and experimenting my way through various configurations, I came across a procedure that has worked well for me on several different systems. I also received valuable feedback from Pawel Jakub Dawidek, the author of gmirror, who gave some insight into some of the not yet documented features of gmirror.
SuSe

How to set up smart package manager on SUSE LINUX 10.0

Post date: October 30, 2005, 00:10 Category: System Views: 4229 Comments
Tutorial quote: Quote from the tutorial: The advantage of smartpm is, that, besides the ability to use mirrors it is able to use different repository structures. So I was able to use the apt-repository structure which provides more channels then the actual yum structure [...], and so I was able to build up a package management with update channels which is capable of using and choosing mirrors in a similar way as yum is.
SuSe

Setting up yum on SUSE LINUX 10.0

Post date: October 16, 2005, 16:10 Category: System Views: 6114 Comments
Tutorial quote: Why should I use yum and not yast? Well, yast is nice, but has some disadvantages: It can#t check for gpg keys, you have to trust the mirrors you add. And, speaking about mirrors, yast has no real mirror management for one source. Especially in these times the most and best known SUSE mirrors are very slow or just closed down, so you have to add other sources in yast. But yast needs your clicks when a mirror is not reachable, and if you enter several sources just as mirrors, it checks every single source - that takes quite a long time!
A last reason (which is not important know because SUSE LINUX has a ugly workaround) is that yast is not able to handle packages for different architectures - it can only install packages for one architecture.
Linux

Enabling S.M.A.R.T for SATA disks

Post date: October 10, 2005, 12:10 Category: System Views: 3326 Comments
Tutorial quote: This very short tutorial shows you how to enable S.M.A.R.T reporting for SATA disks on 2.6 linux kernel.
FreeBSD

Restoring a lost root password

Post date: August 26, 2005, 18:08 Category: System Views: 3891 Comments
Tutorial quote: For some reason you have forgotten your root password
After you stopped banging your head against the wall, this is how you can fix it.
Gentoo

Using extended attributes to better protect files

Post date: August 18, 2005, 18:08 Category: System Views: 12522 Comments
Tutorial quote: How many times have you accidentally overwritten a configuration file during an etc-update that you had customized? I had been aware of extended attributes for a long while now, but I had never taken the time to actually use them. The extended attribute that I am mostly interested with is the immutable attribute. This attribute, which can only be set by root, prevents a file from be changed or deleted, even by root.
Linux

Filesystem snapshots with unionfs

Post date: July 2, 2005, 01:07 Category: System Views: 3380 Comments
Tutorial quote: Many times, you need to know how a certain filesystem looked like at some point in time, and you want to be able to roll back changes that happened to it after that point. While there are multiple solutions to achieve this goal, certainly one of them is to use filesystem snapshots.
Linux

Linux Filesystems and Partitioning: A Primer

Post date: June 24, 2005, 14:06 Category: System Views: 3208 Comments
Tutorial quote: We recently to shed some light on Linux, particularly for users unfamiliar with the system. The article received quite a response from around the world and so we will be doing some follow-up articles to teach all those interested, the ins and outs of Linux. In this article, we will be discussing what partitioning is, how to choose a filesystem, how to have Windows and Linux installed on your hard drive at the same time, and more.
SuSe

Working with SUSE Linux Enterprise Server 9

Post date: June 22, 2005, 09:06 Category: System Views: 4121 Comments
Tutorial quote: Working with SUSE Linux Enterprise Server (SLES) requires an understanding of the login process, including local account files, system accounts, and managing identities.

Using a console shell or the graphical environment are two possible methods of working on a SLES machine.

Finding your way around a SLES installation requires an in-depth knowledge of the filesystem layout. Essential filesystem components are documented and explained in this chapter. Basic filesystem permissions are also described.
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