SysAdmin

NethServer: Linux without All That Linux Stuff

Okay, that title really isn't fair. NethServer has all the Linux stuff, it's just that you don't have to interact with it in the traditional way in order to reap the benefits. NethServer is a web-based management software package built on top of CentOS. You can download it as a separate distribution, but truly, it's just software on top of CentOS.

Let's Automate Let's Encrypt

HTTPS is a small island of security in this insecure world, and in this day and age, there is absolutely no reason not to have it on every Web site you host. Up until last year, there was just a single last excuse: purchasing certificates was kind of pricey.

Installing and Running a Headless Virtualization Server

In recent years, hardware virtualization has become commonplace in the computing industry and more available to end users. The idea behind it is a noble one. Why invest in allocating more server hardware and not utilize it to its full potential, when instead you can consolidate it all onto one or a few servers and share their resources?

SUSE LLC's SUSE Manager

SUSE Manager is a open-source IT management solution with a centralized console for managing multiple Linux distributions, hardware platforms (x86, IBM Power Systems and z Systems),

Managing Linux Using Puppet

At some point, you probably have installed or configured a piece of software on a server or desktop PC. Since you read Linux Journal, you've probably done a lot of this, as well as developed a range of glue shell scripts, Perl snippets and cron jobs.

Profiles and RC Files

I love Linux, and if you're reading this, chances are you do too. To be honest though, some aspects of the Linux environment are confusing. Near the top of the list for me is the profile system.

ZFS: Finding Its Way to a Linux Near You?

It seems like only yesterday that I read Jeff Bonwick's blog entry "ZFS: The Last Word in Filesystems". It was Halloween of 2005 that ZFS was fully integrated into Sun Microsystem's Solaris, and the filesystem was very well received. For the readers not familiar with ZFS, it is a combined all-purpose filesystem and volume manager.

Back to Backups

In my Open-Source Classroom column a few months ago, I talked about backups and got some really fascinating feedback. Here are a few of the ideas from readers worth checking into:

Petros Koutoupis' RapidDisk

RapidDisk is an open-source and enhanced Linux RAM drive solution led by BDFL Petros Koutoupis (who also writes for Linux Journal) that allows users to create, resize a

Transferring Conserver Logs to Elasticsearch

If your organization manages Linux, AIX, HP-UX or Solaris servers in-house, chances are your system administrators at least occasionally need low-level access to those devices. Typically, administrators use some kind of serial console—for example, traditional serial port, Serial-over-LAN or Intelligent Platform Management Interface (IPMI).

Poppins

My friend and fellow Linux Journalian Kris Occhipinti recently posted a reminder on Facebook for everyone to back up regularly in 2016. Although it's something we already should be doing, if you're not a regular backer-upper, you should start today!

Server Hardening

Server hardening. The very words conjure up images of tempering soft steel into an unbreakable blade, or taking soft clay and firing it in a kiln, producing a hardened vessel that will last many years. Indeed, server hardening is very much like that.

Help Me, Uncle Shawn

If you're anything like me, the holiday season is spent fixing Wi-Fi and removing spyware. Occasionally, I get to install Linux for a relative who is ready to give up Windows or needs something that will run on a circa-Windows 2000 computer (Xubuntu is usually my choice).

MySQL—Some Handy Know-How

I recently was talking to someone over IRC who was helping me with a PHP app that was giving me trouble. The extremely helpful individual asked me to let him know the value of a certain field in a record on my MySQL server. I embarrassingly admitted that I'd have to install something like PHPMyAdmin or Adminer in order to find that information.

Build a Large-Screen Command Center with the RPi 2

When the folks who make the Raspberry Pi made good on their plan to release a multi-core version of the tiny computer with 1GB of RAM earlier this year, I saw it as the perfect opportunity to put the single-board Linux box to work—real work—in our company's network operations center.