In some instances, the performance of a VPS is limited to the hardware and software specifications of the host machine. You have a finite amount of CPU and memory resources at your disposal, and you are not free to change the operating system’s global configurations. Nevertheless, there are a plethora of OS and software parameters […]
In-box upgrades on any operating system can be tricky. You are essentially updating all of the software, including the kernel, while keeping all of the current data. This makes it inherently risky, and some would argue against it and maintain that you should either not do upgrades or only do backups and clean installs.
For Ubuntu […]
It is generally understood that a server running Linux needs to have a relatively recent kernel version or at least one that has been securely patched to fix any vulnerabilities. For dedicated servers, a kernel upgrade is not big deal; a simple install, reboot and you are done. For a virtual private server, it can […]
This list is essentially useless. It is useless because no one would actually do the things on the list. Right? I joke of course, but these mistakes are ones you should definitely avoid. Some may seem like common knowledge, but they still happen far too often.
1. Using “password” as a password – For that […]
Many Linux operating systems offer the ability to upgrade to a new version of the OS without wiping the hard drive and reinstalling. On a dedicated server, you might call this an in-box upgrade. Generally, a new version of your Linux distribution will include a newer kernel version and newer software. Is such an upgrade […]
Once you have deployed and booted up your first Linux server, you may suddenly find yourself in an awkward situation where you are unsure what to do next. There are so many options and so many ways to configure it that you might feel overwhelmed. The following tools are essentials for getting started with a […]
The very nature of a dedicated server is that it is dedicated. The very name suggests a long term marriage. But what should you do if you just want a brief affair, maybe even a fling? Quick, easy to deploy virtual cloud servers may be the way to go.
Virtualization allows for rapid deployment of […]
Most web hosting companies offer some form of VPS service, so it can be difficult to decide which one is right for you. A virtual private server can be almost anything that uses virtualization, so it is important to know what you are getting and if the services offered fit your needs. These are some […]
Your dedicated server needs regular maintenance. It will not take care of itself. The following checklist will help you keep your server in top shape.
1. Check your backups – Just because you make backups does not mean they actually work. You need to test them to make sure your server is performing backups correctly. […]
At one time, most of the world’s dedicated servers used a form of UNIX. Big mainframes were known to have big expensive UNIX installations with hefty, costly licenses. Many of those servers have gradually been phased out or have been switched to more modern operating systems like Linux or BSD. Still, some persist, and those […]
Over the years at Dedicated Server School, we have provided you with numerous security tips, often on an individual and specific level. This five-part series will instead give a general overview of Linux server security to serve as a quick reference tool whenever you might need it. Rather than searching for the security topic you […]
Sometimes you need enterprise-level software but cannot afford the enterprise-level price. Such is often the case with dedicated servers. Many individuals and companies operate on a limited budget and cannot afford to pay for licensing and support for an enterprise server OS such as Red Hat Enterprise Linux. Others simply may not need the paid […]
Continuing our series on server-related terminology, Linux terminology seems to be a sensible choice. Many of the world’s servers run Linux, especially in the web hosting industry, and a great deal of the terminology common to Linux may be unfamiliar to users who use Windows. The following terms are ones you should know.
Kernel – This […]
Most servers come with 64-bit processor architecture. For example, Intel’s Xeon line of processors as well as AMD’s Opteron processors are both capable of 64-bit instructions. Most modern desktop processors are also 64-bit. Nevertheless, there are still some users who might opt for 32-bit operating systems. Is there really a substantial difference and what are […]
Now that you have a virtual machine created, it needs an operating system. Just follow these simple steps:
With your virtual machine selected from the side panel, click the “Settings” button
Click the “storage” option
Click the “add attachment button” and then choose CD/DVD device”
You can then select an ISO to create a virtual drive. Alternatively, you […]
The security of your operating system can be very complex. It is a large collection of software that has direct access to your hardware. Therefore, it is crucial to maintain an ongoing security policy for protecting your server’s OS.
The following items should be at the top of your server OS security list:
Kernel updates – The […]
Whether you are in the web hosting business or are simply managing a single dedicated server for a client, you have probably passed along a guarantee or at least hinted at the expectation that your service will provide a substantial amount of uptime. In order to deliver on a such a promise, you need to […]
In my years as a system administrator, I learned that security is much more complex than most people realize. You cannot get away with doing just one thing. One security measure will not save your dedicated server or VPS. Your security must be comprehensive and constantly adapting to defend against intruders. The following are three […]
In most situations, an individual or company will keep the same operating system for the entire time they use a server. While there may be occasional upgrades, these usually do not involve switching to another OS completely. At the end of the server’s life, however, you may decide to go with a different OS. If […]
Yesterday, we looked at low end boxes, inexpensive servers with less powerful hardware than your average high-quality dedicated server. Many low end boxes are actually virtual private servers (VPS), and are, therefore, technically not boxes at all. With a VPS, you share your server with other tenants, all of whom need to play fairly to […]
It’s dead. After all the effort you put in your server, even choosing it over your spouse, there was nothing you could do to save it. Whether it was hardware failure, a massive and crippling cyber attack, or simply a colossal user error, the moment you always dreaded has come to pass: a […]
Linux is one of the most popular server operating systems, and it has gradually supplanted Unix as the world’s server OS of choice. There is no single definitive Linux OS but rather several “distributions” based on the Linux kernel. Because of this, there are some functional differences; however, most of them have similar commands and […]
When picking web server software, you should use the same considerations you used when choosing an operating system. You will also have to consider compatibility with your operating system and the best overall efficiency for the type of site or sites you want to run.
The following are some of the factors […]
There has been much debate on the server level about Windows vs Unix, Unix vs Linux, BSD vs Linux, Windows vs Solaris, and just about any other matchup you can imagine. Choosing the right one is not as easy the supporters of each OS make it seem. You have to consider many factors when choosing […]
Many web hosting providers, perhaps even most, use CentOS to power their dedicated servers. Of the many options for paid operating systems (such as Red Hat Enterprise Linux or even Windows) or free operating systems (such as Debian or Slackware), these hosts choose CentOS. The question is “Why?” What is so special about this Linux […]
Linux users have long debated whether it is better to perform an in-box upgrade or completely wipe a system clean and reinstall whenever there is a new major version release.
For desktop Linux users, the answer is matter of convenience. For server administrators, it can make or break a career or business.
Many Linux […]