SysAdmin

Simple Server Hardening

These days, it's more important than ever to tighten up the security on your servers, yet if you were to look at several official hardening guides, they read as though they were written for Red Hat from 2005. That's because they were written for Red Hat in 2005 and updated here and there through the years. more>>

Server Technology's HDOT Alt-Phase Switched POPS PDU

Server Technology says that although the engineering challenge was significant—adding per outlet power measurement into its popular High-Density Outlet Technology (HDOT) power distribution unit (PDU) family—product quality and manufacturability were not sacrificed. more>>

Understanding Firewalld in Multi-Zone Configurations

Stories of compromised servers and data theft fill today's news. It isn't difficult for someone who has read an informative blog post to access a system via a misconfigured service, take advantage of a recently exposed vulnerability or gain control using a stolen password. more>>

SNMP

How would you find out how much RAM is free on your Linux desktop? That's a really easy question with a lot of answers—free, any of the implementations of top and Glances all are valid responses. more>>

Papa's Got a Brand New NAS

It used to be that the true sign you were dealing with a Linux geek was the pile of computers lying around that person's house. How else could you experiment with networked servers without a mass of computers and networking equipment? If you work as a sysadmin for a large company, sometimes one of the job perks is that you get first dibs on decommissioned equipment. more>>

Applied Expert Systems, Inc.'s CleverView for TCP/IP on Linux

One of the most important characteristics of the contemporary data center, notes Applied Expert Systems, Inc. (AES), is that an ever-increasing amount of the traffic is between servers. Realizing the resulting need to facilitate improved server-to-server communications, AES developed CleverView for TCP/IP on Linux v2.5 with KVM Monitoring. more>>

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. more>>

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. more>>

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? more>>

New Version of GParted

Back in my Windows days, disk maintenance was a task that filled me with dread. I remember the endless hours spent scanning, defragmenting and scanning again. more>>

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), more>>

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. more>>

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. more>>

Understanding Ceph and Its Place in the Market

Last month, the Ceph community released its first set of bug fixes to the 10.2 Jewel release with version 10.2.1. more>>

OpenSwitch Finds a New Home

OpenSwitch has joined the Linux Foundation's stable of networking projects. This is a significant step. It means the network operating system's development will be driven by community needs, instead of the needs of few private companies. more>>

Syndicate content