SysAdmin

November 2014 Issue of Linux Journal: System Administration

Folger's Crystals

Every time I write a Bash script or schedule a cron job, I worry about the day I'll star in my very own IT version of a Folger's commercial. Instead of "secretly replacing coffee with Folger's Instant Crystals", however, I worry I'll be replaced by an automation framework and a few crafty FOR loops. more>>

Promise Theory—What Is It?

During the past 20 years, there has been a growing sense of inadequacy about the "command and control" model for managing IT systems. Years in front of the television with a remote control have left us hard pressed to think of any other way of making machines work for us. more>>

Integrating Trac, Jenkins and Cobbler—Customizing Linux Operating Systems for Organizational Needs

Organizations supporting Linux operating systems commonly have a need to build customized software to add or replace packages on production systems. This need comes from timing and policy differences between customers and the upstream distribution maintainers. more>>

Practical Tiny Core in the Fire Service

I'm sure many of you have at least heard of Tiny Core Linux—legends of how small it is, how little it takes it to run a system with it and even now how it's been ported to run on Raspberry Pi. It's an esoteric minimalist distribution. more>>

New Products

Please send information about releases of Linux-related products to newproducts@linuxjournal.com or New Products c/o Linux Journal, PO Box 980985, Houston, TX 77098. Submissions are edited for length and content.

Security Hardening with Ansible

Ansible is an open-source automation tool developed and released by Michael DeHaan and others in 2012. DeHaan calls it a "general-purpose automation pipeline" (see Resources for a link to the article "Ansible's Architecture: Beyond Configuration Management"). more>>

Adminer—Better Than Awesome!

I've always loved PHPMyAdmin for managing MySQL databases. It's Web-based, fairly robust and as powerful as I've ever needed. Basically, it's awesome. Today, however, I discovered something better than awesome: Adminer. Although it is conceptually identical to PHPMyAdmin, it is far simpler and far more powerful. How can it be both? more>>

How YARN Changed Hadoop Job Scheduling

Scheduling means different things depending on the audience. To many in the business world, scheduling is synonymous with workflow management. Workflow management is the coordinated execution of a collection of scripts or programs for a business workflow with monitoring, logging and execution guarantees built in to a WYSIWYG editor. more>>

New Products

Please send information about releases of Linux-related products to newproducts@linuxjournal.com or New Products c/o Linux Journal, PO Box 980985, Houston, TX 77098. Submissions are edited for length and content.

Linux is Everywhere...So where do we go from here?

We all know that Linux has changed the world...in small ways and large. One of the ways it's changed the world is by changing the way work gets done in corporations, big and small, around the world. As with the computer itself, the effects of ever-advancing Linux seem evolutionary and "slow & steady" from day to day. more>>

Sponsored by: Red Hat

The Growing Role of UEFI Secure Boot in Linux Distributions

With the increasing prevalence of open-source implementations and the expansion of personal computing device usage to include mobile and non-PC devices as well as traditional desktops and laptops, combating attacks and security obstacles against malware is a growing priority for a broad community of vendors, developers and end users. more>>

Docker: Lightweight Linux Containers for Consistent Development and Deployment

Take on "dependency hell" with Docker containers, the lightweight and nimble cousin of VMs. Learn how Docker makes applications portable and isolated by packaging them in containers based on LXC technology. more>>

Debugging Web Sites

I know, I'm in the middle of a series of columns about how to work with ImageMagick on the command line, but when other things arise, well, I imagine that a lot of you are somehow involved in the management of servers or systems, so you all understand firefighting. more>>

DNSSEC Part II: the Implementation

This article is the second in a series on DNSSEC. In the first one, I gave a general overview of DNSSEC concepts to lay the foundation for this article, which discusses how to enable DNSSEC for a zone using BIND. more>>

LVM, Demystified

I've been a sysadmin for a long time, and part of being a sysadmin is doing more than is humanly possible. Sometimes that means writing wicked cool scripts, sometimes it means working late, and sometimes it means learning to say no. Unfortunately, it also sometimes means cutting corners. I confess, I've been "that guy" more than once. A good example is SELinux. more>>

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