Articles and News

Is a Billion-Dollar Worth of Server Lying on the Ground

In this blog post, the author shows some ways in which money is wasted on IT infrastructure.

https://cerebralab.com/Is_a_billion-dollar_worth_of_server_lying_on_the_ground

Understanding MySQL Memory Usage with Performance Schema

This blog post explains MySQL memory instrumentation with Performance Schema and how to use custom queries with the MySQL exporter.

https://www.percona.com/blog/2020/11/02/understanding-mysql-memory-usage-with-performance-schema/

How To Use Skopeo To Migrate Off Docker Hub

The author explains a typical use case of skopeo. The tool comes in handy in every situation where you have to get container images from A to B.

https://jjasghar.github.io/blog/2020/10/30/how-to-use-skopeo-to-migrate-off-dockerhub/

Arch Conf 2020

https://media.ccc.de/c/arch-conf-2020

Arch Conf 2020 recordings are available.

Discover the New Firefox Profiler

Nazım Can Altınova explains how to use the Firefox profiler for performance analysis.

https://www.youtube.com/watch?v=GGem0EDmKAM

Red Hat Joins Open Manufacturing Platform

https://www.redhat.com/en/about/press-releases/red-hat-joins-open-manufacturing-platform

The Open Manufacturing Platform (OPM) was founded in 2019 by the BMW Group and Microsoft as Steering Members. Another step in bringing IT and OT closer together.

Introducing Etrace – a Multi-Purpose Application Profiling Tool

Canonical introduces a profiling tool called etrace. While being designed as a generic tracing application, it is specially tailored to analyze snaps.

https://ubuntu.com//blog/introducing-etrace-a-multi-purpose-application-profiling-tool

BPF Binaries: BTF, CO-RE, and the Future of BPF Perf Tools

With the presented tools BTF and CO-RE, BPF gets more portable, not requiring the whole build chain with LLVM, Clang, and kernel header dependencies. In this blog post, Brendan Gregg explains how it works and what it means for BPF performance tools.

http://www.brendangregg.com/blog/2020-11-04/bpf-co-re-btf-libbpf.html

NAT Slipstreaming

»NAT Slipstreaming allows an attacker to remotely access any TCP/UDP service bound to a victim machine, bypassing the victim’s NAT/firewall (arbitrary firewall pinhole control), just by the victim visiting a website.«

https://samy.pl/slipstream/

Releases and Projects

Red Hat Enterprise Linux 8.3

Some highlights of this release:

  • Podman 2.0
  • Transactional Synchronization Extensions (TSX) disabled by default
  • Expanded System Roles
  • updated tuned

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/8.3_release_notes/index

Buildah 1.17.0

Buildah 1.17 adds several new options to the manifest add command, returns the name instead of id with the mount command, and improves Podman interoperability.

https://buildah.io/releases/2020/11/05/Buildah-version-v1.17.0.html

Mutt 2.0

Mutt gets a new major release number, not because of the number of new features but because some changes break the backward-compatibility.

http://www.mutt.org/relnotes/2.0/

HAProxy 2.3

This release of HAProxy comes with many improvements; its changes in the connection layer lays the foundation for support for HTTP/3 / QUIC.

https://www.haproxy.com/blog/announcing-haproxy-2-3/

k9s

»K9s provides a terminal UI to interact with your Kubernetes clusters. The aim of this project is to make it easier to navigate, observe, and manage your applications in the wild.«

https://github.com/derailed/k9s

:wq