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Red Hat and SUSE Leftovers

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Red Hat
SUSE
  • The introvert’s guide to Red Hat Summit

    Events like Red Hat Summit fill me with excitement and, admittedly, a bit of trepidation. Thousands of people, a schedule packed with informative and useful sessions, and opportunities to meet and talk with folks doing exciting work in open source sounds great. It also, well, sounds a bit exhausting if you’re an introvert. It doesn’t have to be, though, and Red Hat wants everyone to feel welcome, comfortable, and able to fully enjoy the event. With that in mind, read on for some strategies and resources for success.

    Introverts aren’t (necessarily) misanthropes, we just tend to like smaller gatherings and less noisy and intense social situations. Even those can be fun, in limited doses. The thing about a large conference like Red Hat Summit, though, is that it’s a huge helping of people and activities turned up to 11. Don’t worry, you can still go and have a great experience, it just takes a little bit of planning.

  • Kubernetes Cluster vs Master Node

    In Software engineering, a cluster resembles a group of nodes that work together to distribute the work load. Additionally clustering helps in fault tolerance, by having a cluster acting as a secondary (backup) to a primary cluster.

  • The Bright (green) Lights of Denver

    You may have read some of the release notes or press coverage from the recent release of OpenStack Stein, in which case you’ll know that Stein introduced multi-factor authentication receipts for Keystone. This really just completes the work that was originally begun in the Ocata release, making it easier to implement a challenge/response mechanism in your OpenStack environment. Multi-factor authentication is quickly becoming the norm in everything from free online email services, to social media sites and more – catching up with the security that most, if not all online banking services have been offering for some time now.

  • How Big is a Container, Really?

    One of the first questions in any discussion about cluster sizing tends to be “How many containers are you running?”. While this is a good data point (especially if you are pushing the scheduler to its limit) it doesn’t show the whole story.
    We tend to abstract out a container as this homogeneous building block that represents any workload.

    This abstraction has a lot of value for learning how containers work and how the system treats all workloads similarly (which is hugely valuable). However, it falls down when we start looking at planning our hardware requirements.

More in Tux Machines

Linux 5.2-rc2

Hey, what's to say? Fairly normal rc2, no real highlights - I think most of the diff is the SPDX updates. Who am I kidding? The highlight of the week was clearly Finland winning the ice hockey world championships. So once you sober up from the celebration, go test, Linus Read more Also: Linux 5.2-rc2 Kernel Released As The "Golden Lions"

Audiocasts/Shows: Linux Action News, Linux Gaming News Punch, Open Source Security Podcast and GNU World Order

Review: Red Hat Enterprise Linux 8.0

My experiment with RHEL 8 got off to a rough start. Going through the on-line registration process produced some errors and ended up with me getting the wrong ISO which, in turn, resulted in some confusion and delays in getting the distribution installed. Things then began to look up as RHEL 8 did a good job of detecting my system's hardware, registered itself without incident and offered good performance on physical hardware. I was particularly pleased that the distribution appears to detect whether our video card will work well with Wayland and either displays or hides Wayland sessions in response. I did have some trouble with the GNOME Classic Wayland session and GNOME Shell on X.Org was a bit sluggish. However, the Classic session on X.Org and GNOME Shell on Wayland both worked very well. In short, it's worthwhile to explore each of the four desktop options to see what works best for the individual. The big issues I ran into with RHEL were with regards to software management. Both GNOME Software and the Cockpit screen for managing applications failed to work at all, whether run as root or a regular user. When using the command line dnf package manager, the utility failed to perform searches unless run with sudo and occasionally crashed. In a similar vein, the Bash feature that checks for matching packages when the user types a command name it doesn't recognize does not work and produces a lengthy error. There were some security features or design choices that I think will mostly appeal to enterprise users, but are less favourable in home or small office environments. Allowing remote root logins by default on the Workstation role rubs me the wrong way, though I realize it is often useful when setting up servers. The enforced complex passwords are similarly better suited to offices than home users. One feature which I think most people will enjoy is SELinux which offers an extra layer of security, thought I wish the Cockpit feature to toggle SELinux had worked to make trouble-shooting easier. I was not surprised that RHEL avoids shipping some media codecs. The company has always been cautious in this regard. I had hoped that trying to find and install the codecs would have provided links to purchase the add-ons or connect us with a Red Hat-supplied repository. Instead we are redirected through a chain of Fedora documentation until we come to a third-party website which currently does not offer the desired packages. Ultimately, while RHEL does some things well, such as hardware support, desktop performance, and providing stable (if conservative) versions of applications, I found my trial highly frustrating. Many features simply do not work, or crash, or use a lot of resources, or need to be worked around to make RHEL function as a workstation distribution. Some people may correctly point out RHEL is mostly targeting servers rather than workstations, but there too there are a number of problems. Performance and stability are provided, but the issues I ran into with Cockpit, permission concerns, and command line package management are all hurdles for me when trying to run RHEL in a server role. I find myself looking forward to the launch of CentOS 8 (which will probably arrive later this year), as CentOS 8 uses the same source code as RHEL, but is not tied to the same subscription model and package repositories. I am curious to see how much of a practical effect this has on the free, community version of the same software. Read more

GNOME 3.34 Revamps the Wallpaper Picker (And Fixes a Longstanding Issue Too)

The upcoming release of GNOME 3.34 will finally solve a long standing deficiency in the desktop’s background wallpaper management. Now, I’ve written about various quirks in GNOME wallpaper handling before, but it’s the lack of option to pick a random wallpaper from a random directory via the Settings > Background panel that is, by far, my biggest bug bear. Ubuntu 19.04 ships with GNOME 3.32. Here, the only wallpapers available to select via the Settings > Background section are those the system ships with and any top-level images placed in ~/Pictures — nothing else is selectable. So, to set a random image as a wallpaper in GNOME 3.32 I tend to ignore the background settings panel altogether and instead use the image viewer’s File > Set as background… option (or the similar Nautilus right-click setting). Thankfully, not for much longer! Read more