---

title: "CentOS Connect 2023"

title_lead: "February 3, 2023 • Brussels, Belgium"

talks:

  - title: "Offered CentOS Infra services for SIGs"

    youtube: P5mW1Hc3w9Y

    speakers:

      - name: Fabian Arrotin

    desc: |

      In this talk, we'll do a quick recap about which kind of services (from git

      hosting to building and cdn delivery, as well as CI testing) the CentOS Infra

      team is offering and maintaining for the Special Interest Groups

  - title: "MirrorManager and CentOS Stream 9"

    youtube: ZCnhKL1UycM

    speakers:

      - name: Adrian Reber

    desc: | 

      
Fedora relies on MirrorManager since 2008 and with CentOS Stream 9 CentOS

      mirrors are now also managed by the MirrorManager instance.

      
For the CentOS community I want to use this session to give an overview how

      MirrorManager works. I want to give an introduction about all the different

      parts that are necessary to make MirrorManager work as well as how the Fedora

      instance is set up. I also want to highlight how MirrorManager differs from

      the traditional CentOS mirror infrastructure.

      
In addition to the introduction for the CentOS community I also want to present

      what has changed in the last 6 years and how and why we rewrote core components

      in Rust.

  - title: "One year on: Experiences using ebranch to bring over Fedora packages to EPEL"

    youtube: 0oxHgY2SgVk

    speakers:

      - name: Michel Salim

    desc: |

      
At this event last year, I described a WIP tool called ebranch

      (https://pagure.io/epel/ebranch) that is meant to simplify the workflow

      of branching a specific package for an EPEL release, together with all the

      missing dependencies needed to build it.

      
One year on, this tool has been used for bringing over various sets of new

      packages to EPEL,  in different programming language stacks (from Python to

      Perl to Rust); this talk discusses the current state of the tool, how features

      are added to address specific needs, the experiences gained in writing and

      using the tool, and the pros and cons of how different language stacks are

      managed in Fedora when it comes to branching to EPEL.

  - title: "Hyperscale SIG update"

    youtube: EGlSsPgIgIE

    slides: "https://gitlab.com/CentOS/promo/centos-events/-/raw/main/2023-02-connect/hyperscale-sig.pdf"

    speakers:

      - name: Davide Cavalca

    desc: |

      Update on what the Hyperscale SIG has been working on, what deliverables

      are available and how to use them, and what's coming up next.

  - title: "Introducing CentOS Stream CoreOS and OKD Streams"

    speakers:

      - name: Christian Glombek

      - name: Alessandro Di Stefano

    desc: |

      
CentOS Stream CoreOS (SCOS) is a Linux distribution built from CentOS

      Stream RPM packages, and focused on running container-based workloads

      with Kubernetes. It is part of the SCOS Stream of OKD, the Kubernetes

      community distribution of OpenShift, co-maintained by the CentOS Cloud

      SIG and the OKD Working Group.

      
In this presentation, we'll present the technologies and methodologies

      driving the CentOS Stream CoreOS (SCOS) release engineering, and the

      Cloud-Native architecture we leverage to package the operating system

      that runs Kubernetes/OKD.

      
We'll show how this framework, powered by Tekton pipelines and operated

      via GitOps, can enable, thanks to rpm-ostree, the CoreOS Assembler and the

      Layering model, delivery scenarios for different OSes beyond the Cloud-Native

      ones: IoT, multimedia, automotive, thin-client-based environments. Users can

      derive their own purpose-driven variants by maintaining a common multi-arch

      base OS, distributed as a bootable Open Container Image (OCI).

  - title: "CentOS Stream: RHEL development in public"

    youtube: mJQa-9gehaU

    speakers:

      - name: Adam Samalik

    desc: |

      CentOS Stream is where RHEL development happens in public. You can preview

      content coming to RHEL, test your things on top of it, and even participate!

      We'll show you how it works, highlight the key differences between Fedora ELN,

      CentOS Stream and RHEL, and see where it's all happening.

  - title: "Kmods SIG Update"

    youtube: T59Mq2GToN4

    speakers:

      - name: Peter Georg

    desc: |

      Update on what the Kmods SIG has been working on with a particular emphasis

      on automation of rebuilding kABI tracking kernel modules if required.

  - title: "Network management in Enterprise Linux: present and future"

    youtube: hr9YJX11H_c

    speakers:

      - name: Fernando Fernandez Mancera

    desc: |

      The talk will explore the current state of network management in Enterprise

      Linux systems and discuss potential future developments in the field. The

      presentation will cover topics such as network configuration and troubleshooting,

      with a focus on the NetworkManager and Nmstate tools. The aim of the talk is to

      provide a comprehensive overview of network management in Enterprise Linux and

      to discuss the challenges and opportunities that lie ahead for enterprise Linux

      users.

  - title: "Introduction to Rocky Linux and Peridot: Maintaining a downstream fork of Red Hat Enterprise Linux"

    youtube: TVa6J7GzJeA

    speakers:

      - name: Neil Hanlon

    desc: |

      Learn about Peridot, a new open source build system created and used by

      Rocky Linux to simplify the process of maintaining a downstream fork of

      Red Hat Enterprise Linux. Discover how Peridot can be used to patch and

      rebuild RPMs, modify upstream RPMs, or package your own software, and how

      Rocky Linux uses it to manage the rebuilding of all packages in Enterprise

      Linux and help drive upstream contributions while enabling Rocky's unique

      special interests. This presentation is ideal for users of RHEL-like

      operating systems who want to improve their Linux deployment and management

      processes. Join us to learn about the benefits of Peridot and Rocky Linux

      and how you can use them to optimize your Linux system and streamline your

      development workflow.

  - title: "From code to cloud - the journey of Openstack package"

    youtube: jaoIph_mEqM

    speakers: 

      - name: Karolina Kula

    desc: |

      OpenStack is a huge cloud computing project, which does not provide

      packaging for platforms – RDO does it for rpm-based Linux distros.

      Delivering packages for such project with new release every half a

      year is a challenging task. In this talk I’d like to bring closer to

      audience our continous-delivery approach to package delivery – starting

      from creating and adding new packages, through updates and managing all

      packages already delivered, share our practice in automation and tips

      how to not get drown in dependencies of dependencies. The journey will

      also have quick stop in building tools we are using in RDO and continuous

      integration to ensure stability and compatibility, to finally reach the

      point of having new OpenStack release. This talk is intended not only for

      those, whose daily duties are connected with cloud or continous-delivery

      technologies, but also for anyone interested in topic of delivering

      packages at great scale in open source cloud project, or would like to

      contribute to RDO.

  - title: "A year in review 2023 - CentOS Automotive SIG"

    youtube: YXEx83_y9VU

    speakers:

      - name: Eric Curtin

    desc: |

      A review of what's going on in our CentOS Automotive SIG, our AutoSD

      image, how to run an AutoSD VM to try AutoSD, PREEMPT_RT kernel. Similar

      in ilk to "Fedora: The Vehicle for Automotive Linux" presented by Stephen

      Smoogen and Allison King at "Nest with Fedora 2022".

  - title: |

      Running Cloud Native Applications on CentOS on a Cloud Native Processor;

      Setting up and running a Mastodon Server on Arm servers in the cloud

    youtube: rTepNBWgySo

    speakers:

      - name: Aaron Williams

    desc: |

      
In recent months, Mastodon has garnered a lot of attention, and seen a huge

      influx of new users. Mastodon is a social network built on ActivityPub, a

      protocol for federated social media. In early December, the network broke 8

      million users, and had 2.5M active daily users in one week.

      
That influx of new users and interest has led to many new Mastodon instances

      being added, some with a very broad appeal, and others targeting smaller

      groups and niche interests. It has also led to some of the more popular

      instances of Mastodon struggling to scale with the new demand.

      
In this talk, we will walk you through how Mastodon’s federated architecture

      is designed for the cloud and how easy Mastodon is to set up and run on a

      CentOS instance on AArch64 cloud instances for free. And since Mastodon’s

      backend is written in Ruby on Rails, using Redis and PostgreSQL, we will

      show how easily they run on an AArch64 processor.

      
In addition, we will look at how well the Ampere Altra processor handles

      cloud native workloads on CentOS. We will show you not only how to run

      Mastodon on AArch64, but how to do it for free, without having to worry

      about getting a large cloud bill. Recent events at Twitter gave us the

      fun idea of how to combine all of this: create and run a Mastodon server

      on Oracle Cloud’s (OCI) Always Free tier using Ampere A1 and CentOS.

      
We will also talk about some of the scaling issues that Mastodon runs

      into, and how Ampere cores designed for cloud native workloads like

      Mastodon are uniquely able to give you predictable throughput and

      scaling as your server grows in popularity. All while doing this on a

      processor that is more efficient (i.e. greener) than other processors

      out there.

  - title: "AlmaLinux Build System and Project Updates"

    youtube: TFrImmTPUOc

    speakers:

      - name: Jack Aboutboul

    desc: |

      Since introducing ALBS at a prior Dojo event, please join the AlmaLinux

      as they discuss updates and enhancements to their build system, including

      how they are tackling supply chain security and SBOM.

---

CentOS Connect is a free mini-conference focusing on CentOS Stream,

the CentOS SIGs, and the entire Enterprise Linux ecosystem.

CentOS Connect at FOSDEM happens February 3, 2023, the day before FOSDEM.

{% include event.html %}