Language Selection

English French German Italian Portuguese Spanish

Roy Schestowitz's blog

Site Update (Updatedx2)

Filed under
Site News

Newspaper

Summary: Recent changes at Tux Machines, in just a nutshell

INSPIRED in part by Slashdot, we recently added topical icons to submissions, applying these changes retroactively to over 50,000 older pages. The idea was, this can improve orientation by helping to quickly associate text with topics. More minor modifications were made as well, some textual and some layout related. They are subtle but they can be seen. After receiving feedback regrading icons size we made further modifications. Regarding social media buttons, some of the ones we initially found were unbelievably privacy-infringing (allowing Google, Facebook, Twitter etc. to see visitors of this site), so we disabled them immediately and replaced them with static buttons. Right now we can assure that whenever loading pages in this Web site nothing except our security-aware network gets contacted. We share no data about visitors (with anyone) and Apache logs get shredded for good after a few weeks, leaving sufficient trail just in case of attacks on the site, which would merit investigation. Log rotation is similarly privacy-respecting at the cache level, which leads to the following point.

Today, after the above changes had been made and stability attained (there were some network disruptions yesterday), we also updated Drupal, ensuring it is secure and fully up to date (the latest minor bugfix release is a month old). There is still an issue with Varnish and until we tackle this issue users who are not logged in might be getting error pages. One way to overcome this is to append "?something" to the URL requested. This bypasses the Varnish cache until we finish our investigation of this issue and resolve it for good.

Update: The issue with Varnish turns out to be a conflict between two caching layers. It's fixed now. If you spot an issue, still, please let us know.

Update #2: Yesterday we identified another issue and soon thereafter fixed it. After Twitter syndication had failed we realised that RSS feeds were not standards-compliant, due to a blank line at the start of each generated page in Drupal. This is a common issue and it is a nightmare to debug (requires a complete code review with help of GNU utilities like grep). After 4 hours of investigation I found the culprit and fixed the coding error. RSS feeds are back.

Statistics Not Compatible With Varnish

Filed under
News

Statistics

VARNISH is valuable for a number of reasons, including security, privacy, and performance. I first used it around 2009 when another site of mine had repeatedly come under DDOS attacks. Using Varnish means that requests for pages usually come from the same IP address (the cache proxy), if at all. Much of the time visitors get served static (cached) pages transparently and quickly. The downside is, this interferes with statistics (the Apache server does not even see all requests) and it is not compatible with modules like polls, where each IP addressed is allowed just one vote.

During the server/site migration we tried to preserve as many of the features as we could. There was a transition from old Debian to new CentOS and the new architecture is quite different (still 2 CPU cores but with more RAM, a virtual container, and resilience owing to proxies/redundancy). Thanks to those who suggested workarounds. We have looked at some of them, but without losing on performance there is no way to keep meaningful statistics. These statistics have been disabled. Not even we, with direct access to the server and the CMS, have access to meaningful statistics.

We are going to try to focus on high quality selection of news, not on numbers.

Slight Site Changes

Filed under
News

Yesterday, following a mostly successful migration (there are still some impending fixes to .htaccess), slight changes were applied. For regular readers of the site, here they are summarised:

Syndicate content

More in Tux Machines

Audiocasts/Shows: Linux in the Ham Shack and Linux Headlines

  • LHS Episode #302: The End of Kenwood

    Welcome to Episode 302 of Linux in the Ham Shack. In this short topic episode, the hosts discuss the potential end of Kenwood in the amateur radio market, emcom in Montucky, Storm Area 51, HF on satellites, a huge update for PulseAudio, the Linux 5.3 kernel and much more. Thank you for listening and have a fantastic week.

  • 09/19/2019 | Linux Headlines

    Fresh init system controversy at the Debian project, a more scalable Samba, and a big release for LLVM. Plus GitHub's latest security steps and a new version of OBS Studio.

Android Leftovers

When Diverse Network ASICs Meet A Unifying Operating System

And it has also been a decade since switch upstart Arista Networks launched its Extensible Operating System, or EOS, which is derived from Linux. [...] The cross-platform nature of ArcOS, coupled with its ability to run in any function on the network, could turn out to be the key differentiator. A lot of these other NOSes were point solutions that could only be deployed in certain parts of the network, and that just creates animosity with the incumbent vendors that dominate the rest of the networking stack. Given the mission-critical nature of networking in the modern datacenter, it costs a great deal to qualify a new network operating system, and it can take a lot of time. If ArcOS can run across more platforms, qualify faster, and do more jobs in the network, then, says Garg, it has a good chance of shaking up switching and routing. “That totally changes the business conversation and the TCO advantages that we can bring to a customer across the entirety of their network.” Read more

Server: Kubernetes/OpenShift, OpenStack, and Red Hat's Ansible

  • 9 steps to awesome with Kubernetes/OpenShift presented by Burr Sutter

    Burr Sutter gave a terrific talk in India in July, where he laid out the terms, systems and processes needed to setup Kubernetes for developers. This is an introductory presentation, which may be useful for your larger community of Kubernetes users once you’ve already setup User Provisioned Infrastructure (UPI) in Red Hat OpenShift for them, though it does go into the deeper details of actually running the a cluster. To follow along, Burr created an accompanying GitHub repository, so you too can learn how to setup an awesome Kubernetes cluster in just 9 steps.

  • Weaveworks Named a Top Kubernetes Contributor

    But anyone who knows the history of Weaveworks might not be too surprised by this. Weaveworks has been a major champion of Kubernetes since the very beginning. It might not be too much of a coincidence that Weaveworks was incorporated only a few weeks after Kubernetes was open sourced, five years ago. In addition to this, the very first elected chair of the CNCF’s Technical Oversight Committee, responsible for technical leadership to the Cloud Native Foundation was also headed up by our CEO, Alexis Richardson(@monadic) (soon to be replaced by the awesome Liz Rice (@lizrice) of Aqua Security).

  • Improving trust in the cloud with OpenStack and AMD SEV

    This post contains an exciting announcement, but first I need to provide some context! Ever heard that joke “the cloud is just someone else’s computer”? Of course it’s a gross over-simplification, but there’s more than a grain of truth in it. And that raises the question: if your applications are running in someone else’s data-centre, how can you trust that they’re not being snooped upon, or worse, invasively tampered with?

  • Red Hat OpenStack Platform 15 Enhances Infrastructure Security and Cloud-Native Integration Across the Open Hybrid Cloud

    Red Hat, Inc., the world's leading provider of open source solutions, today announced the general availability of Red Hat OpenStack Platform 15, the latest version of its highly scalable and agile cloud Infrastructure-as-a-Service (IaaS) solution. Based on the OpenStack community’s "Stein" release, Red Hat OpenStack Platform 15 adds performance and cloud security enhancements and expands the platform’s ecosystem of supported hardware, helping IT organizations to more quickly and more securely support demanding production workloads. Given the role of Linux as the foundation for hybrid cloud, customers can also benefit from a more secure, flexible and intelligent Linux operating system underpinning their private cloud deployments with Red Hat Enterprise Linux 8.

  • Red Hat Ansible Automation Accelerates Past Major Adoption Milestone, Now Manages More Than Four Million Customer Systems Worldwide

    Red Hat, Inc., the world's leading provider of open source solutions, today announced that more than four million customer systems worldwide are now automated by Red Hat Ansible Automation. Customers, including Energy Market Company, Microsoft, Reserve Bank of New Zealand and Surescripts all use Red Hat Ansible Automation to automate and orchestrate their IT operations, helping to expand automation across IT stacks. According to a blog post by Chris Gardner with Forrester Research, who was the author of The Forrester Wave™: Infrastructure Automation Platforms, Q3 2019, "Infrastructure automation isn’t just on-premises or the cloud. It’s at the edge and everywhere in between."1 Since its launch in 2013, Red Hat Ansible Automation has provided a single tool to help organizations automate across IT operations and development, including infrastructure, networks, cloud, security and beyond.