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Search results for Virtual Users And Domains With Postfix, Courier And MySQL (Fedora Core 5)

Unix+clones Resetting a forgotten MySQL root password
Post date: October 2, 2006, 04:10 Category: Security Views: 1943 Comments: 0
Tutorial quote: Resetting the root password of a MySQL database is trivial if you know the current password if you don't it is a little tricker. Thankfully it isn't too difficult to fix, and here we'll show one possible way of doing so.
Unix+clones High Performance MySQL
Post date: November 30, 2006, 22:11 Category: Optimizing Views: 3138 Comments: 0
Tutorial quote: The operating system your MySQL server runs on and the server's configuration can be just as important to your server's performance as the indexes, schema, or queries themselves. In this chapter, we will help you understand how to tune your server to improve performance, as opposed to tuning schema or queries. We'll be looking at changes to your hardware, operating system, and MySQL configuration to see what effects they have on overall performance.

We assume that you've already made efforts to boost the performance of your queries. If you haven't done that already, stop now and read Chapter 4 and Chapter 5 to get a handle on optimizing your queries and your application code. Only then should you worry about server settings. Hardware is often not the solution to MySQL performance problems. Poorly optimized queries can slow you down far more than not having the latest CPU or SCSI disk. To put this in perspective, one of the MySQL AB trainers even says that changing hardware might, in the best cases, give you a 10-fold performance increase. But tuning queries (and schemas) can often give you 1000-fold performance increase. Seriously.

Some topics covered in this chapter are platform-specific. The authors' knowledge of the various platforms on which MySQL runs is limited. In many cases, you'll need to consult your local documentation for various operating system tools and specifics.

We start with an overview of the factors that limit performance and then look more in depth at RAID, hardware, and operating system issues. The chapter finishes with a discussion of techniques you can use to locate, identify, and fix bottlenecks.
OpenSUSE Write your own kernel module and insert it into running kernel
Post date: January 12, 2009, 02:01 Category: Programming Views: 670 Comments: 1
Tutorial quote: So, you want to write a kernel module. You know C, you've written a few normal programs to run as processes, and now you want to get to where the real action is, to where a single wild pointer can wipe out your file system and a core dump means a reboot.

kernel Modules are pieces of code that can be loaded and unloaded into the kernel upon demand. They extend the functionality of the kernel without the need to reboot the system. For example, one type of module is the device driver, which allows the kernel to access hardware connected to the system.
Ubuntu Howto Install Nginx webserver in Ubuntu 8.04 (Hardy Heron)
Post date: August 4, 2008, 02:08 Category: Software Views: 1023 Comments: 0
Tutorial quote: Nginx (pronounced “engine x”) is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Written by Igor Sysoev in 2005, Nginx now hosts between 1% and 4% of all domains worldwide. Although still in beta, Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption.

Fedora How To Use NTFS Write Support (ntfs-3g) On Fedora 7
Post date: August 22, 2007, 17:08 Category: Desktop Views: 931 Comments: 0
Tutorial quote: Normally Linux systems can only read from Windows NTFS partitions, but not write to them which can be very annoying if you have to work with Linux and Windows systems. This is where ntfs-3g comes into play. ntfs-3g is an open source, freely available NTFS driver for Linux with read and write support. This tutorial shows how to use ntfs-3g on a Fedora 7 desktop to read from and write to Windows NTFS drives and partitions.
Fedora Using ATA Over Ethernet (AoE) On Fedora 10 (Initiator And Target)
Post date: June 2, 2009, 05:06 Category: Installing Views: 811 Comments: 0
Tutorial quote: This guide explains how you can set up an AoE target and an AoE initiator (client), both running Fedora 10. AoE stands for "ATA over Ethernet" and is a storage area network (SAN) protocol which allows AoE initiators to use storage devices on the (remote) AoE target using normal ethernet cabling. "Remote" in this case means "inside the same LAN" because AoE is not routable outside a LAN (this is a major difference compared to iSCSI). To the AoE initiator, the remote storage looks like a normal, locally-attached hard drive.
Ubuntu Ten tips for new Ubuntu users
Post date: June 22, 2006, 10:06 Category: Miscellaneous Views: 4439 Comments: 0
Tutorial quote: Ubuntu has become the most popular Linux distribution for new Linux users. It's easy to install, easy to use, and usually "just works." But moving to a different operating system can be confusing, no matter how well-designed it is. Here's a list of tips that might save you some time while you're getting used to Ubuntu.
Solaris AMPS (Apache MySQL PHP SSL) for Solaris 10
Post date: January 26, 2007, 00:01 Category: Software Views: 3716 Comments: 0
Tutorial quote: The strategy is to utilize as much of the Open Source and other free software bundled with Solaris 10 as possible and integrate Apache2, MySQL, PHP and SSL in a environment that can take full advantage of Solaris 10 zones, resource management and highly scaleable, secure System Administration.
Ubuntu Essential house keeping in Ubuntu
Post date: December 8, 2005, 05:12 Category: System Views: 1352 Comments: 0
Tutorial quote: I started using Ubuntu Breezy ver 5.10 a month back on my machine. Prior to that I was exclusively into Fedora. What drew me to Ubuntu was the huge number of packages in its repositories including softwares which I find useful on a day-to-day basis like Tomboy which I had to compile from source in Fedora. But the Ubuntu CD comes with the base packages which support only open file formats. So if you want support for proprietary file formats like mp3 and quicktime support as well as install softwares not included on the CD, then you have to do some work.

I call it essential housekeeping because it is not exactly a problem, but only a matter of finding out how to get the necessary support. Here I share my experiences in putting the Ubuntu house in order on my machine.
Linux Port Knocking
Post date: April 16, 2005, 05:04 Category: Network Views: 930 Comments: 0
Tutorial quote: Firewall administrators are challenged to balance flexibility and security when designing a comprehensive rule set. A firewall should provide protection against malfeasants, while allowing trusted users to connect. Unfortunately, it is not always possible to filter out the bad guys, because filtering on the basis of IP addresses and ports does not distinguish connecting users. Bad guys can and do come from trusted IP addresses. Open ports remain a necessary vulnerability: they allow connections to applications but also may turn into open doors for attack. This article presents a new security system, termed port knocking, in which trusted users manipulate firewall rules by transmitting information across closed ports.