If you are new to dedicated servers and have spent any time reading this site, you have undoubtedly come across posts from us reminding you to check and monitor your server’s log files. We even make sure to tell you where those log files are stored. In many cases, however, finding the log files is […]
Archive for March, 2013
On most Linux dedicated servers, grub is the bootloader that gets the operating system loaded when the system first boots. With grub, you can determine which installed kernel version will load, attach any startup options to the kernel, and even load other operating systems. In most cases, grub will do its work silently never showing […]
A process is any type of program currently running in a computer system’s memory. All types of dedicated servers have processes, and on Linux and Unix systems, they are easy to track, troubleshoot, and manage.
One of the most important commands you can use to track a process is “ps”. When executed it will display […]
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 […]
A virtual private server (VPS) is a low-cost alternative to a full dedicated server. Using a VPS has a number of strategic advantages for small and medium sized businesses. Among those advantages are the following:
Savings – Above all else, a business that is small or just getting started will need to find ways to […]
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. […]
Memory is one of the most important features of any server. The more RAM a program uses, the less you will have available for other applications. Therefore, it is important to monitor memory usage on your Linux server to ensure that all programs are playing nice and that nothing wrong is going on.
1. /proc/meminfo […]
Ubuntu is the most popular desktop Linux solution, and because of this, many system administrators have become comfortable using it even on the server. Ubuntu does offer a server edition, and it is just as powerful and useful as any of the other Linux server distributions. This brief guide will explain how to install Webmin, […]
In the first part of this guide, we looked at some bash tricks that help you find things in the command history. In this section of the BASH (Born Again Shell) guide, we will look at some other functions.
Suffix command history
In the last post, we explained how to append the prefix from the previous command. […]
Bash is the common shell environment used on Linux servers. If you manage a server, there is a good chance you will need to drop to the command line at some point and encounter Bash or one of its alternatives. The following are some basic commands that can help speed up your bash experience.
Zombies present a particularly unique problem to system administrators. No, I do not mean the type of zombies that eat brains. I mean zombie processes. A zombie process is a process that is no longer active on a system but that refuses to die. In most cases, a zombie is not something that should alarm […]
When your server suddenly stops functioning the way it is supposed to, there are a number of troubleshooting techniques you can try. One of the most important things you can do is backtrack and investigate to see if some changes you recently made might have caused the server to stop working. If you discover irreparable […]
Server hardware is constantly evolving, and as a dedicated server administrator, it is a good idea to stay abreast on the latest technology and find out where server technology is headed in the future. The following are some of the new technology that has recently been released or is coming soon.
72-core processor – Do […]
On a basic Linux system, passwords are stored in the /etc/passwd file. This is usually OK for a single-user system, but on a multi-user system, such as a server, the passwords should be hidden and encrypted. Shadow passwords allow you to do just that . On Red Hat Enterprise Linux and CentOS, the shadow-utils package […]
For some applications, a single computer or even a single dedicated server is not enough. These applications require extremely complex computations that could take standard servers a very long time to complete. They require the use of supercomputers made up of multiple nodes in a cluster, each containing multiple processors and/or cores along with their […]
Once you delve into the world of Linux and Unix dedicated servers, you are likely to encounter the term NFS. What is it and how is it used in server configuration?
NFS stands for Network File System (NFS) and serves as a method for mounting drives or directories remotely over a network. NFS has […]