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CentOS Blog: CentOS Community newsletter, November 2019 (#1911)

2019, november 4 - 20:33

Dear CentOS enthusiast,

CentOS is more than just code. If you want to contribute in other non-code ways - documentation, design, promotion, events - we want to hear from you. See the "Contributing" section below for more details.

IN THIS EDITION: News

This month the infrastructure team has been working hard on getting Centos 8 and CentOS Stream into the CBS (Community Build System). On the 29th, Thomas announced that this work had been completed and detailed what still needs to be done. If you're interested in building packages against either of these targets, you're encouraged to read that mailing list thread thoroughly, and ask any questions you may have there.

Earlier in the month, a meeting was held in Boston including representatives from various parts of Red Hat, discussing what needed to be done internally to facilitate the cooperation between the Red Hat Enterprise Linux (RHEL) Engineering and QE teams, and the CentOS community. There too, plenty remains to be done, but we're making progress towards making this a true upstream of RHEL. We appreciate your patience as we make the many changes that are needed to make this a success.

If you're considering using CentOS Stream, either in production, or as a development platform, we'd love to hear from you. We particularly want to hear what we can do better to help you succeed, so that we can make this platform something that serves everyone's needs.

Releases and updates

This month has seen a moderate number of updates/releases:

Errata and Enhancements Advisories We issued the following CEEA (CentOS Errata and Enhancements Advisories) during October:

Errata and Security Advisories We issued the following CESA (CentOS Errata and Security Advisories) during October: Errata and Bugfix Advisories We issued the following CEBA (CentOS Errata and Bugfix Advisories) during October:

Events

October was a quiet month for events, but we do have a couple of upcoming events that we want to be sure are on your calendar:

SuperComputing 19, Denver

As you may know, SuperComputing is overwhelmingly powered by CentOS. We'll be at SuperComputing19 in Denver in just a few weeks, hanging out at the Red Hat booth to discuss your SuperComputing and HPC needs.

FOSDEM and the CentOS Dojo

FOSDEM is one of the largest, and oldest, open source gatherings in the world. CentOS has had a presence there for many years, and we plan to be there again in 2020. FOSDEM is, as usual, the first weekend in February (Feb 1-2 2020) in Brussels Belgium.

CentOS expects to have a table in the main exhibitor area (we'll find out for sure in a couple weeks), and, from a content perspective, we encourage you to keep an eye on the distributions devroom, where content relating to CentOS, and other Linux distributions, will be presented.

Also, like every year, we plan to hold our CentOS Dojo on the Friday before FOSDEM - January 31st - at the Marriott Grand Place. Details are on the CentOS wiki. The call for presentations is now open. We want to hear what you're working on which may be of interest to the CentOS community. Have a look at last year's schedule for an idea of what kinds of talks we've run in the past.

The call for presentation closes on November 18th, so that we have time to build the schedule and promote the event a little more widely. So don't wait!

Contributing

As with any open source project, there's a lot more than just code. If you want to get involved, but you're not a programmer or packager, there's still a ton of places where you can plug in.

  • Design - Graphic and design elements for the product itself, the website, materials for events, and so on, are always a great need. This is true of any open source community, where the focus on code can tend to neglect other aspects.
  • Events - While CentOS has an official presence at a few events during the year, we want a wider reach. If you're planning to attend an event, and want to represent CentOS in some way, get in touch with us on the centos-promo mailing list to see how we can support you.
  • Promotion - The Promo SIG does a lot in addition to just events. This includes this newsletter, our social media presence, blog posts, and various other things. We need your help to expand this effort.
  • Documentation - Any open source project is only as good as its documentation. If people can't use it, it doesn't matter. If you're a writer, you are in great demand.

If any of these things are of interest to you, please come talk to us on the centos-devel mailing list, the centos-promo mailing list, or any of the various social media channels.

We look forward to hearing from you, and helping you figure out where you can fit in.

Kategóriák: Informatika

Fabian Arrotin: Fixing heat/fan issue on Thinkpad t490s running CentOS 8/Stream

2019, október 29 - 00:00

It's usually always a good thing to receive a newer laptop, as usually that means shiny new hardware, better performances and also better battery life. I was really pleased with previous Lenovo Thinkpad t460s and so the normal choice was its successor, also because default model following company standard, and so the t490s

When I received the laptop, I was a little bit surprized (had no real time to review/analyze in advance) by some choices :

  • No SD card reader anymore (useful when having to "dd" some image for armhfp tests)
  • Old docking style is gone and you have to connect through usb-c/thunderbolt
  • Embedded gigabit ethernet in the t490s (Intel Corporation Ethernet Connection (6) I219-LM (rev 30)) isn't used at all when docked, but going through usb-net device

Installing CentOS Stream (so running kernel 4.18.0-147.6.el8.x86_64 when writing this post) was a breeze, after I turned on SecureBoot (useful also because you can also use fwupd to get LVFS firmware updates automagically as I did for my t460s)

But quickly I realized a huge difference between my previous t460s and the new t490s : heat/temperature and so fan usage. To a point where it was really impossible to just even use our official video-conferencing solution : fan going crazy, laptop unresponsive (load average climbing to ~16), and video/sound completely "off-sync".

Dmesg was also full of such warnings :

[248849.131909] CPU1: Core temperature/speed normal [248894.211874] CPU1: Package temperature above threshold, cpu clock throttled (total events = 1221232) [248894.211897] CPU5: Package temperature above threshold, cpu clock throttled (total events = 1221232) [248894.211902] CPU3: Package temperature above threshold, cpu clock throttled (total events = 1221233) [248894.211903] CPU0: Package temperature above threshold, cpu clock throttled (total events = 1221233) [248894.211903] CPU6: Package temperature above threshold, cpu clock throttled (total events = 1221233) [248894.211904] CPU4: Package temperature above threshold, cpu clock throttled (total events = 1221233) [248894.211905] CPU2: Package temperature above threshold, cpu clock throttled (total events = 1221233) [248894.211905] CPU7: Package temperature above threshold, cpu clock throttled (total events = 1221233) [248894.212895] CPU1: Package temperature/speed normal [248894.212895] CPU5: Package temperature/speed normal [248894.212908] CPU4: Package temperature/speed normal

After some quick research, I found some links about known issues on some (recent) Lenovo thinkpads and some possible solutions explaining the issue[s]:

Nice, or not so (still waiting for Lenovo to fix this through FW update for the t490s - when writing this blog post). I quickly tried to rebuild a community proposed fix and rpm is available in my Copr repository.

But, as stated on said github repo, it doesn't work with SecureBoot, so I temporary disabled it to test said fix, but it wasn't magical either, so I decided to re-eanble SecureBoot and be back in "normal" mode.

Then I found another interesting forum thread about t480 and fan/heat issue, so I decided to have a look.

Indeed : 'Thunderbolt BIOS Assist Mode' was disabled too in my case (wondering why it came with that disabled, while it was coming with RHEL8 installed, and pre-loaded) : let's enable it and see how that goes :

OMG ! instead of having a terminal open with "watch sensors" running, I wanted to have a quick look directly from gnome, so just installed the gnome-shell-extension-system-monitor-applet (available now in epel8-testing) and so far so good :

When running normal workload, while connected to Dock and two external displays), it runs like this :

And yesterday I was happy (ultimate test) to be in a video conf-call for more than one hour, with no video/sound issue and temperature just climbed a little bit, but nothing unusual when using such video call :

Hope it helps, also not if you run Linux on a t490s but any recent Lenovo Thinkpad (or even Yoga it seems) model. Now still waiting on Lenovo to release firmware for the throttling issue but at least the laptop is currently usable :)

Kategóriák: Informatika

CentOS Blog: CentOS Community newsletter, October 2019 (#1910)

2019, október 8 - 17:40

Dear CentOS enthusiast,

If you'd like to help out with the process of putting together the newsletter, please see the Contributing section at the end. We're always looking for help!

IN THIS EDITION:

Releases and updates

The big news in September was the release of CentOS Linux 8, along with CentOS Stream. CentOS Linux 8 is exactly what you expected - a rebuild of Red Hat Enterprise Linux (RHEL) 8 - but CentOS Stream is a new aspect of the CentOS Project that needs a little more explanation.

CentOS Stream is a rolling preview of what will be in the next minor release of RHEL. CentOS Stream will be updated regularly (the exact cadence is still a work in progress) and will give you the opportunity to verify your code and workloads against what’s coming next.

The motivation for doing this is to provide a platform where people can develop against CentOS Stream, and, by doing so, be ready for market the day that the next minor version of RHEL ships. CentOS Stream will be developer beta level code (not alpha) containing features ready for validation to include in the next minor release of RHEL. Red Hat wants CentOS Stream to be a great experience for developers to target the next minor release of RHEL (released every 6 months). Code that is delivered to CentOS Stream is what Red Hat engineers intend to go into the next minor release of RHEL and will have gone through CI.

If you’re interested in building a project on Stream, we encourage you to look into the SIGs - https://wiki.centos.org/SpecialInterestGroup - which are a place to package and test on CentOS, using the Community Build System (CBS) and the CentOS CI. Bring your ideas to the centos-devel mailing list, and we’ll help you figure out the way forward.

Finally, note that this is still a work in progress. We hope to have regular updates to CentOS Stream within the next few months, but tooling for that does not exist yet, and so there will be a lot of manual processes at first. We appreciate your patience while we get things up and running.

We are working on a feedback mechanism that is going to evolve over time. CentOS Stream must have the ability to get feedback and suggestions to be successful. We will announce details as things solidify.

You can download CentOS Stream, as well as CentOS Linux, at https://www.centos.org/download/ and you can read more details on the centos-devel mailing list, at https://lists.centos.org/pipermail/centos-devel/2019-October/017922.html

Errata and Enhancements Advisories

We issued the following CEEA (CentOS Errata and Enhancements Advisories) during September:

Errata and Security Advisories

We issued the following CESA (CentOS Errata and Security Advisories) during September:

Errata and Bugfix Advisories

We issued the following CEBA (CentOS Errata and Bugfix Advisories) during September:

Other releases

The following releases also happened during September:

Events

In September, we had a presence at the Webpros Summit (formerly the cPanel conference) in Atlanta, Georgia. The cPanel community are long-term supporters of CentOS, so this is always a fun event. It was also a great place for some early conversations about CentOS Stream as a place to develop and test products.

While there, Johnny Hughes gave an excellent presentation about the CentOS Linux 8 release, what's in it, and why it was a longer process than usual.

As usual, there's a number of events coming up where you can find members of the CentOS community.

October 28–30, in Portland, we'll be at LISA19, the\premier conference for operations professionals, where we share real-world knowledge about designing, building, securing, and maintaining the critical systems of our interconnected world. Come see us at the Red Hat booth with your CentOS questions and stories.

Then, in November, we'll be in Denver at SC19 - the international conference for high performance computing, networking, storage and analysis. Once again, come see us at the Red Hat booth. As usual, or main interest there is the always-awesome Student Cluster Competition, where tomorrow's HPC experts compete to build a supercomputer with off-the-shelf hardware and open source software ... and most of them choose CentOS. Supercomputing is #PoweredByCentOS!

Finally, I want to keep reminding you that we'll be doing another Dojo at FOSDEM, on January 31st 2020. Details will be coming soon to the CentOS Wiki. Think about what you might want to present about, and be sure to join us in Brussels!

Contributing to CentOS Pulse

We are always on the look-out for people who are interested in helping to:

  • Tell us what you're working on
  • Provide a report from the SIG on which you participate
  • Tell us about an event that you attended where there was CentOS content
  • Write an article on an interesting person or topic
  • Tell us about a news article that covered the use of CentOS in an interesting way
  • Suggest an topic that you'd like to see someone else write an article on

Please see the page with further information about contributing. You can also contact the Promotion SIG, or just email Rich directly (rbowen@centosproject.org) with ideas or articles that you'd like to see in the next newsletter.

 

 

Kategóriák: Informatika

CentOS Blog: CentOS 8 and CentOS Stream released

2019, szeptember 24 - 22:11

We are excited to announce the release of CentOS 8, and of the new RHEL upstream, CentOS Streams. Details can be found on the CentOS-Announce mailing list.

Kategóriák: Informatika

CentOS Blog: Release for CentOS Linux 7 (1908) on the x86_64 Architecture

2019, szeptember 17 - 16:55

We are pleased to announce the general availability of CentOS Linux 7 (1908) for the x86_64 architecture. Effectively immediately, this is the current release for CentOS Linux 7 and is tagged as 1908, derived from Red Hat Enterprise Linux 7.7 Source Code.

Full details are on the centos-devel mailing list.

Kategóriák: Informatika

CentOS Blog: CentOS Community Newsletter, September 2019 (#1909)

2019, szeptember 2 - 14:51

Dear CentOS enthusiast,

If you'd like to help out with the process of putting together the newsletter, please see the Contributing section at the end. We're always looking for help!

IN THIS EDITION:

Releases and updates

August was unusually slow in terms of updates and errata - primarily because everyone has been focused on the CentOS 8 build.

Errata and Security Advisories

We issued the following CESA (CentOS Errata and Security Advisories) during August:

Errata and Bugfix Advisories

We issued the following CEBA (CentOS Errata and Bugfix Advisories) during August:

Events

August was another busy month for CentOS events.

At the beginning of the month, CentOS had a presence at DevConf.IN, the annual developer event in India. Vipul Siddharth represented us there, and wrote up a summary of that event.

The following week, we had a table at Flock, the annual Fedora conference, in Budapest, and Vipul also wrote a great writeup of that event on his blog.

On the 14th, we held our second annual CentOS Dojo at DevConf.US, featuring talks about Keylime, Terraform, Buildah, and other topics. We had roughly 35 people in attendance. The videos of the presentations are now available on the CentOS YouTube channel .

Then, we were at the Red Hat booth at the Open Source Summit in San Diego, August 21-23. We were able to meet many people who use CentOS in a variety of industries, and find out about their interests and concerns. If you dropped by, thanks. It's always a pleasure to talk with you at events.

Next month, we'll be at the cPanel event in Atlanta, September 23rd - 25th at the Atlanta Marriott Marquis. Our own Johnny Hughes will be talking about what's up with CentOS 8, and we'll have a booth where you can drop by for your CentOS swag needs. As you probably know, CentOS is the backbone of the web hosting industry, and the cPanel event is where they gather to discuss their trade. I hope to see you there!

And, looking forward just a little further, remember that FOSDEM is coming in just a few months, and we'll be there. We will, once again, be running a Dojo at FOSDEM. You can see details from this year's event in the CentOS wiki, and the 2020 event should look similar. Watch Twitter, the mailing lists, or whatever is your preferred channel, for updates soon.

SIG (Special Interest Group) Report

SIGs - Special Interest Groups - are where people work on the stuff that runs on top of CentOS.

The following are the SIG reports for this month.

CentOS Virtualization SIG Quarterly Report Purpose

Packaging and maintaining different FOSS based virtualization applications that one can install and run natively on CentOS.

https://wiki.centos.org/SpecialInterestGroup/Virtualization

Membership Update

We are always looking for new members.

No changes in members this month.

Releases and Packages

oVirt 4.3 has been released and Virt SIG repositories are publicly available. oVirt 4.4 development is in progress upstream now

Health and Activity

The Virtualization SIG remains fairly healthy. All the projects within the SIG are updating regularly on biweekly meetings.

oVirt is planning a conference in Rome in  October 2019

Issues for the Board

oVirt pushed a patch for having a CentOS appliance including oVirt Guest Agent in https://github.com/CentOS/sig-cloud-instance-build/pull/127, it's under consideration for CentOS 7.7 inclusion.

oVirt would have been happy to consume CentOS 8 alpha / beta / development builds to be ready to ship packages for CentOS 8 on its GA. Would be nice to get early access to the rpms within the SIGs.

 

Opstools quarterly report, 01 June - Aug 31 2019 Purpose

Opstools provides tools for operators.

https://wiki.centos.org/SpecialInterestGroup/OpsTools

Membership update

No members left or were added to the SIG in the last quarter.

Health and activity

We are phasing out fluentd and sensu; patches have been proposed to OpenStack. Their respective replacements are rsyslog (included in RHEL) and collectd-sensubility. The latter is a plugin to collectd; it will create events in collectd which can be acted on as on other collectd events.

Once we'll have CentOS 8, we'd be rebuilding all our packages for RHEL8; opstools packages used to be consumed by OpenStack Kolla, but since there are no CentOS 8 builds, this relation has been dropped for now.

We intend to get the integration back, once there are builds based on CentOS 8.

Collectd has been updated to 5.9.0 and 5.9.1 upstream. We did not include these releases for now,
as they contain some severe bugs.

Issues for the board

none at the moment.

Contributing to CentOS Pulse

We are always on the look-out for people who are interested in helping to:

  • Tell us what you're working on
  • Provide a report from the SIG on which you participate
  • Tell us about an event that you attended where there was CentOS content
  • Write an article on an interesting person or topic
  • Tell us about a news article that covered the use of CentOS in an interesting way
  • Suggest an topic that you'd like to see someone else write an article on

Please see the page with further information about contributing. You can also contact the Promotion SIG, or just email Rich directly (rbowen@centosproject.org) with ideas or articles that you'd like to see in the next newsletter.

 

 

Kategóriák: Informatika

CentOS Blog: CentOS Community Newsletter, August 2019 (#1908)

2019, augusztus 7 - 21:02

Dear CentOS enthusiast,

It's been another busy month, but better a few days late than never!

If you'd like to help out with the process of putting together the newsletter, please see the Contributing section at the end. We're always looking for help!

Releases and updates

We had a very large number of updates/enhancements in July:

Errata and Enhancements Advisories

We issued the following CEEA (CentOS Errata and Enhancements Advisories) during July:

Errata and Security Advisories

We issued the following CESA (CentOS Errata and Security Advisories) during July:

Errata and Bugfix Advisories

We issued the following CEBA (CentOS Errata and Bugfix Advisories) during July:

Events

Last week we were at DevConf.in in Bangalore. If you dropped by, thanks!

Next week - August 14th - we'll be gathering at Boston University, in Boston, Massachusetts, for the second annual CentOS Dojo at DevConf.US. There's still space to register, if you wish to attend. In addition to the regular sessions, there will be an opportunity to give lightning talks about what you're working on, as requested by last year's attendees. More details are available on the event wiki page.

And the week after that - August 21-23 - we will be at the Open Source Summit in San Diego. Drop by to see us at the Red Hat booth!

If you are presenting anything about CentOS, at any event anywhere in the world, please do let us know, so that we can promote your presence there, and your talk.

If you'd like to run a CentOS Dojo, or other community event, we may be able to help. Get in touch via the centos-devel mailing list, or via our Twitter account @CentOSProject.

Contributing to CentOS Pulse

We are always on the look-out for people who are interested in helping to:

  • Tell us what you're working on
  • Provide a report from the SIG on which you participate
  • Tell us about an event that you attended where there was CentOS content
  • Write an article on an interesting person or topic
  • Tell us about a news article that covered the use of CentOS in an interesting way
  • Suggest an topic that you'd like to see someone else write an article on

Please see the page with further information about contributing. You can also contact the Promotion SIG, or just email Rich directly (rbowen@centosproject.org) with ideas or articles that you'd like to see in the next newsletter.

 

Kategóriák: Informatika

CentOS Blog: CentOS Dojo at DevConf.US – August 14th, 2019 in Boston

2019, augusztus 6 - 18:11

The CentOS Project is pleased to be hosting a one-day Dojo, in conjunction with the upcoming DevConfUS conference, on August 14, 2019.

The one-day event, located on the campus of Boston University in the George Sherman Union Building, will feature talks on:

  • Running CentOS and Terraform on AWS
  • Supercomputing at NC State University
  • An Introduction to Keylime
  • Using Applications Streams
  • Lightning talks about what you’re working on

The event is free, but attendees should register for the event so planners can get an idea of attendance. 

In the evening we’ll be gathering at a local watering hole for less formal discussions, accompanied by food and great local beers - location to be announced on the day of the event!

CentOS will continue its presence at DevConfUS with a booth and various talks, so even if you miss the Dojo, there’s still plenty of time to meet with folks working on CentOS. We look forward to seeing you soon!

Kategóriák: Informatika

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