Tags: SysAdmin

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The top skills employers are looking for in a DevOps professional include configuration management tools, OpenStack, and programming languages.
The top skills employers are looking for in a DevOps professional include configuration management tools, OpenStack, and programming languages.

Top Skills for Today’s DevOps Professional

In the past five years, demand for DevOps professionals has grown exponentially, with companies looking to build out their tech capabilities and bring new software products to market while simultaneously cutting development time and driving efficiencies in the process. Since the beginning of 2016,...
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The Major Lesson IT Can Learn From Netflix's High Availability Testing Methodology

High availability events are more likely to be triggered then disaster recovery events, but often aren't tested for as much. Here's what tech leaders can take away from Netflix's approach to the problem.
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AWS Lambda garners interest, production workloads as serverless world evolves

AWS Lambda is about to grab more case studies and production workloads as no-ops gains traction. Toss in other efforts from cloud vendors and even managing a cloud server seems absurd.
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Postfix
Learn how to process emails more efficiently and debug various MTA issues.

Destress Your Mail Server with Postfix Troubleshooting Tips: Part 1

Several mail servers are available on the market today. Some are rather confounding to configure but are super-reliable. Others are a little old school and rely on no small degree of background knowledge to get them up and running. According to the website Mail Radar, in a randomized survey of 59,...
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7 Essential Skill-Building Courses for the Open Source Jobs Market

Dice and The Linux Foundation recently released an updated Open Source Jobs Report that examines trends in open source recruiting and job seeking. The report clearly shows that open source professionals are in demand and that those with open source experience have a strong advantage when seeking...
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How to Set Up Virtual Domains and Virtual Users in Postfix

A previous tutorial covered how to install a Postfix mail server and test it with mailx. Now we’ll introduce email aliases, set up virtual domains and users, and do a little troubleshooting. My first professional introduction to serving HTTP was via the clever Roxen Web Server when I worked for an...
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 MTA (Mail Transfer Agent) Postfix
The rocket-fueled MTA (Mail Transfer Agent) that is Postfix has such a wide array of features that quite honestly it’s a struggle to know where to begin.

How to Install and Test a Postfix Mail Server

These days more people than ever feel compelled to get their e-mail fixed super-swiftly if it ever fails. When used several times a day, every day of the year, some of us feel truly bereft when e-mail isn’t available to us. There’s even recognised medical conditions relating to those who...
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Greg Kroah-Hartman Linux Kernel Maintainer
Greg Kroah-Hartman is a superstar in the open source world. He is a Linux Foundation Fellow.

Greg KH: Update to Linux Kernel 4.6 for New Security Features

Greg Kroah-Hartman is a superstar in the open source world. He is a Linux Foundation Fellow and the maintainer of the stable branch of the Linux kernel, the staging subsystem, USB, Linux drivers, userspace I/O, TTY layer...the list of his work is quite long. He was also the creator of openSUSE...
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The Advanced Linux System Administration and Networking (LFS211) course is now available
The Advanced Linux System Administration and Networking (LFS211) course is now available and gives students access to 40-50 hours of coursework, and more than 50 hands-on labs -- practical experience that translates to real-world situations.

New Self-Paced Online Course Preps SysAdmins for Linux Foundation Advanced Certification

The Linux Foundation has launched a new self-paced, online course to help senior Linux sysadmins prepare for the advanced Linux Foundation Certified Engineer (LFCE) exam. The Linux Networking and Administration (LFS211) course gives students access to 40-50 hours of coursework, and more than 50...
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Albert Greenberg, Director of Azure Networking and Distinguished Engineer at Microsoft, at Open Networking Summit 2016.
Albert Greenberg, Director of Azure Networking and Distinguished Engineer at Microsoft, at Open Networking Summit 2016.

Open Source Enables Scale-out in SDN Powered Microsoft Azure

Microsoft Azure’s programmable, scalable and high-performance network infrastructure is leveraging software-defined networking (SDN) principles as well as open source components to meet the demands of massive cloud-based production environments, said Albert Greenberg, Director of Azure Networking...
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