March 2026 - Scomb - lists.alasca.cloud

SONiC build performance – thoughts and next steps

by Rankan Sen

Dear all, Over the past few days, we’ve been running multiple SONiC builds as part of the SCOMB effort, and I spent some time stress testing the build process. A few quick observations: * The best speedup so far was with *16 parallel jobs* * Build time was approximately *3 hours* * A completely fresh build (no cached/pre-sourced images) takes around *~5 hours* Even with these optimizations, a build time of ~3 hours is not practical for day-to-day development, particularly when multiple users are iterating on builds. To support a more collaborative and efficient workflow, this needs to be reduced further. From what I’ve seen so far: * There are likely *redundant packages and images* in the build * Not everything included seems necessary for a *basic or iterative build* So a first step could be: * Reviewing dependencies more critically * Stripping down the build to only what’s actually required That said, this is just an initial direction. There are likely better approaches (e.g., caching strategies, registry mirroring, incremental builds), so it would be great to get more input. If you have suggestions, please share them here: https://gitlab.com/alasca.cloud/scomb/sonic-buildimage/-/work_items/18<https://gitlab.com/alasca.cloud/scomb/sonic-buildimage/-/work_items/18> Also, feel free to pick up any open tickets if something looks interesting. Best regards, Rankan Sen ** Cloud&Heat Cloud&Heat Technologies GmbH Königsbrücker Straße 96 (Halle 15) | 01099 Dresden *+49 351 479 367 00* *rankan.sen(a)cloudandheat.com | **www.cloudandheat.com* <https://www.cloudandheat.com> *Green, Open, Efficient.* Ihr Cloud-Service- und Cloud-Technologie-Provider aus Dresden. <https://www.cloudandheat.com/> Commercial Register: District Court Dresden Register Number: HRB 30549 VAT ID No.: DE281093504 Managing Director: Nicolas Röhrs Authorized signatory: Dr. Marius Feldmann

March 30, 2026

ALASCA Community Hackathon - Invitation

by Helena Ott

Hey everyone, I am very excited to announce our *second ALASCA community Hackathon*. We are inviting you all to join us on *July 1st and 2nd in Stuttgart at Urban Spaces* (https://urbanspaces.de/de) to get together again and spend 2 days working on and further advancing the assisting projects as well as related topics within ALASCA! We are planning on doing full day hacking sessions for thpse 2 days. On top of that, all Hackathon participants are invited to join our *member UhuruTec's summer party in the evening on day 1*, so we are all set for a great evening event. Since we are currently working on *SCOMB *and trying to set up the SONiC Community Build, I was thinking that that would be a perfect chance for us to get together in person and work towards that goal. If that is something that you guys are interested in, we'd love it if you joined us on July 1st and 2nd in Stuttgart. If you'd like to participate, *please register for your free ticket* and make sure to let us know if you'd like to stay for the evening event on day 1. You can do so here: https://pretix.eu/focis/alasca-hackathon/ We are really looking forward to get the chance to see everyone again! Make sure to share the information regarding the Hackathon and extend the invitation to your companies, communities and networks and everyone, who'd like to contribute to SCOMB! Greetings from Dresden Helena -- Helena Ott Communication and Documentation Specialist ALASCA - Verband für betriebsfähige, offene Cloud-Infrastrukturen e.V. c/o Cloud&Heat Technologies GmbH Königsbrücker Straße 96 | 01099 Dresden +49 351 479 367 00 hello(a)alasca.cloud |https://alasca.cloud/ Let's learn. Let's discuss. Let's inspire. Let's tech-talk. Alle News zu den ALASCA-Tech-Talks gibt es hier:https://alasca.cloud/alasca-tech-talks/ Verantwortliche i.S.d. § 55 Abs. 2 RStV: Dr. Marius Feldmann (Vorsitzender | Cloud&Heat Technologies GmbH) Josephine Seifert (Stellvertretende Vorsitzende) Steffen Brauß (Schatzmeister | Schwarz IT KG) Registergericht: Amtsgericht Dresden Registernummer: VR 12961 Steuernummer: 202/140/21049

March 30, 2026

Help needed: 3-Minute Survey for FOSS Backstage Talk

by Daniel Gerber

Dear ALASCA members, developers, supporters and friends, In a few days I will be giving a talk at this years FOSS Backstage in Berlin. To ensure that I represent the perspectives and priorities of our community accurately, as well as help guiding ALASCA’s work going forward, I would appreciate it if you could take a moment to answer this short survey: https://nextcloud.cloudandheat.com/apps/forms/s/qMYM4FiNfjkzfCzybSGcoFYM It should not take you more then 3 minutes, the answer are anonymous and can be given till Friday the 13th of March, 23:59. Please excuse duplicate notification of this survey and please share it within our community. Cheers, Daniel P.S: In case you need an English version please contact me directly! —— Dr. Daniel Gerber Softwaredeveloper ALASCA - Verband für betriebsfähige, offene Cloud-Infrastrukturen e.V. c/o Cloud&Heat Technologies GmbH Königsbrücker Straße 96 | 01099 Dresden +49 351 479 367 00 daniel.gerber(a)alasca.cloud | https://alasca.cloud/ Let's learn. Let's discuss. Let's inspire. Let's tech-talk. Alle News zu den ALASCA-Tech-Talks gibt es hier: https://alasca.cloud/alasca-tech-talks/ Verantwortliche i.S.d. § 55 Abs. 2 RStV: Dr. Marius Feldmann (Vorsitzender | Cloud&Heat Technologies GmbH) Josephine Seifert (Stellvertretende Vorsitzende) Steffen Brauß (Schatzmeister | Schwarz IT KG) Registergericht: Amtsgericht Dresden Registernummer: VR 12961 Steuernummer: 202/140/21049

March 5, 2026

Re: ALASCA SCOMB GitLab

by Helena Ott

Hi all, it has come to my attention that the invitation link for the matrix channel didn't work. The issue has now been fixed: please you and share this link: https://matrix.to/#/#alasca-scomb:matrix.org. Greetings Helena Am 05.03.2026 um 11:20 schrieb Helena Ott: > > Hi Guys, > > attached to this mail you'll find the meeting notes for our last call. > As a reminder: we have established action items to work on, which I > have now integrated into the ALASCA SCOMB Gitlab. Most of the issues > don't have people assigned to them yet, since not everyone has joint > the repository and not all task where taken by someone in our last call. > > If you'd like to be included and want to start working on SCOMB with > us, please request access to join this repository > <https://gitlab.com/alasca.cloud/scomb>. You can also join our Matrix > channel > <https://matrix.to/#/!RbUuBLWOKNKYPHtFDF:matrix.org?via=matrix.org&via=matri…> > for the project. > > Ideally, these issues will be our basis for progress tracking in our > montly calls. As of now, the issues I've created are not up to my > preferred standard yet and are missing some clear instructions and/or > expectations, which is due to the fact, that I don't fully understand > the material. Please bear with me, as I learn. ☺️ > > Feel free to join the repository, grab tasks and let's get started! > Please also feel free to add your own issues if you think of any or > specify the ones I have added with more detailed information. > > Thanks for your support! > > Greetings > Helena > > -- > Helena Ott > Communication and Documentation Specialist > > ALASCA - Verband für betriebsfähige, offene Cloud-Infrastrukturen e.V. > c/o Cloud&Heat Technologies GmbH > Königsbrücker Straße 96 | 01099 Dresden > +49 351 479 367 00 > hello(a)alasca.cloud |https://alasca.cloud/ > > Let's learn. Let's discuss. Let's inspire. Let's tech-talk. > Alle News zu den ALASCA-Tech-Talks gibt es hier:https://alasca.cloud/alasca-tech-talks/ > > Verantwortliche i.S.d. § 55 Abs. 2 RStV: > Dr. Marius Feldmann (Vorsitzender | Cloud&Heat Technologies GmbH) > Josephine Seifert (Stellvertretende Vorsitzende) > Steffen Brauß (Schatzmeister | Schwarz IT KG) > > Registergericht: Amtsgericht Dresden > Registernummer: VR 12961 > Steuernummer: 202/140/21049 -- Helena Ott Communication and Documentation Specialist ALASCA - Verband für betriebsfähige, offene Cloud-Infrastrukturen e.V. c/o Cloud&Heat Technologies GmbH Königsbrücker Straße 96 | 01099 Dresden +49 351 479 367 00 hello(a)alasca.cloud |https://alasca.cloud/ Let's learn. Let's discuss. Let's inspire. Let's tech-talk. Alle News zu den ALASCA-Tech-Talks gibt es hier:https://alasca.cloud/alasca-tech-talks/ Verantwortliche i.S.d. § 55 Abs. 2 RStV: Dr. Marius Feldmann (Vorsitzender | Cloud&Heat Technologies GmbH) Josephine Seifert (Stellvertretende Vorsitzende) Steffen Brauß (Schatzmeister | Schwarz IT KG) Registergericht: Amtsgericht Dresden Registernummer: VR 12961 Steuernummer: 202/140/21049

March 5, 2026

ALASCA SCOMB GitLab

by Helena Ott

Hi Guys, attached to this mail you'll find the meeting notes for our last call. As a reminder: we have established action items to work on, which I have now integrated into the ALASCA SCOMB Gitlab. Most of the issues don't have people assigned to them yet, since not everyone has joint the repository and not all task where taken by someone in our last call. If you'd like to be included and want to start working on SCOMB with us, please request access to join this repository <https://gitlab.com/alasca.cloud/scomb>. You can also join our Matrix channel <https://matrix.to/#/!RbUuBLWOKNKYPHtFDF:matrix.org?via=matrix.org&via=matri…> for the project. Ideally, these issues will be our basis for progress tracking in our montly calls. As of now, the issues I've created are not up to my preferred standard yet and are missing some clear instructions and/or expectations, which is due to the fact, that I don't fully understand the material. Please bear with me, as I learn. ☺️ Feel free to join the repository, grab tasks and let's get started! Please also feel free to add your own issues if you think of any or specify the ones I have added with more detailed information. Thanks for your support! Greetings Helena -- Helena Ott Communication and Documentation Specialist ALASCA - Verband für betriebsfähige, offene Cloud-Infrastrukturen e.V. c/o Cloud&Heat Technologies GmbH Königsbrücker Straße 96 | 01099 Dresden +49 351 479 367 00 hello(a)alasca.cloud |https://alasca.cloud/ Let's learn. Let's discuss. Let's inspire. Let's tech-talk. Alle News zu den ALASCA-Tech-Talks gibt es hier:https://alasca.cloud/alasca-tech-talks/ Verantwortliche i.S.d. § 55 Abs. 2 RStV: Dr. Marius Feldmann (Vorsitzender | Cloud&Heat Technologies GmbH) Josephine Seifert (Stellvertretende Vorsitzende) Steffen Brauß (Schatzmeister | Schwarz IT KG) Registergericht: Amtsgericht Dresden Registernummer: VR 12961 Steuernummer: 202/140/21049

March 5, 2026

Re: MLAG support in SONiC Community build

by Martin Pilka

Hello Rankan, thanks for your quick reply. Currently we won't build SONiC because installation date is too close now (next week), however please let us know once community build with MLAG support is available - we will give it a try with our next cluster installed. Thanks, Martin -- Kind Regards Martin Pilka Dipl.-Ing. CEO & Founder *dNation - MAKING CLOUD EASY* dNation <https://dnation.cloud/> On 3/2/26 09:49, Rankan Sen wrote: > > Hello Martin, > > The SONiC community build already supports MLAG, I was able to > successfully built an image aswell. However, as of now it is not > published anywhere, but we are in the process of setting that up. You can > find a comprehensive instructions set to build the image here: > > https://gitlab.com/alasca.cloud/scomb/sonic-guides > > This also includes a guide on setting up MLAG on two switches. Let me > know if you are facing any issues with the build or MLAG setup. > > Regards, > > Rankan Sen > > On 2/28/26 20:39, Martin Pilka wrote: >> >> Hello Rankan, >> >> please let us know once your SONiC Community build contains MLAG support >> - we will give it a try. >> >> Have a nice day, >> Martin >> >> -- >> Signature >> Kind Regards >> >> >> >> >> Martin Pilka >> Dipl.-Ing. >> CEO & Founder >> *dNation - MAKING CLOUD EASY* >> >> dNation <https://dnation.cloud/> >> >> > -- > *Rankan Sen > Student > * > ** > > Cloud&Heat > > Cloud&Heat Technologies GmbH > Königsbrücker Straße 96 (Halle 15) | 01099 Dresden > *+49 351 479 367 00* > *rankan.sen(a)cloudandheat.com | **www.cloudandheat.com* > <https://www.cloudandheat.com> > > *Green, Open, Efficient.* > Ihr Cloud-Service- und Cloud-Technologie-Provider aus Dresden. > <https://www.cloudandheat.com/> > > Commercial Register: District Court Dresden > Register Number: HRB 30549 > VAT ID No.: DE281093504 > Managing Director: Nicolas Röhrs > Authorized signatory: Dr. Marius Feldmann >

March 2, 2026