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Ciro S. Costa proslijedio/la je Tweet
Excited to what people do with the set_pipeline step!
https://twitter.com/concourseci/status/1214975064820604928 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Ciro S. Costa proslijedio/la je Tweet
https://gvisor.dev/blog/2019/11/18/gvisor-security-basics-part-1/ …
#gVisor security team put together a blog that shows the security and design principles behind gVisor! Should be a fun read for those who care about container security.Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Ciro S. Costa proslijedio/la je Tweet
The
@linuxplumbers Conference 2019 videos are now available on#Youtube https://www.linuxplumbersconf.org/blog/2019/videos-are-here/ … "[…] You can access and promote the#LinuxPlumbers Conference#YouTube channel here:" https://www.youtube.com/linuxplumbersconference …pic.twitter.com/pzgrhacnUt
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Ciro S. Costa proslijedio/la je Tweet
Defer gets cheaper, but panic/recover is more expensive. Cost of defer: 34ns -> 6ns. Cost of panic/recover: 62ns -> 255nshttps://twitter.com/bradfitz/status/1184547163235184640 …
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Ciro S. Costa proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Ciro S. Costa proslijedio/la je Tweet
We've got a new blog, and we're kicking it off with a long-awaited roadmap update!https://blog.concourse-ci.org/core-roadmap-towards-v10/ …
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Ciro S. Costa proslijedio/la je Tweet
Announcing my next book: BPF Performance Tools: Linux System and Application Observability, for which I developed over 100 new tools http://www.brendangregg.com/blog/2019-07-15/bpf-performance-tools-book.html …pic.twitter.com/FOWr4mG05U
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Ciro S. Costa proslijedio/la je Tweet
Did you ever ask yourself if cgroups (containers, pods, whathaveyou) can impact the
@golang runtime? I did and here's what I learned... (thread)
#Docker#Kubernetes#Linuxpic.twitter.com/4VlMBnnIVGPrikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Ciro S. Costa proslijedio/la je Tweet
One thing that seems to have gotten hidden from the GitHub announcements is actually THE MOST VALUABLE feature for open source maintainers: The ability to have private discussions and code review about security vulnerabilities WITHIN your repo. https://help.github.com/en/articles/about-maintainer-security-advisories …pic.twitter.com/dGMDP28r3T
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naturally, not on localhost - that's two pods communicating through a service on GKE with receiver & transmitter sitting on different nodes
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the details: - single connection - just `splice`ing from the receiving socket directly to a fd pointing to `/dev/null`
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it's just so crazy how "stressing" a linux node by making it receive at consistent 10Gbps reveals that just ~15% of sys time and ~14% of softirq time is needed (of a single core)
pic.twitter.com/iS6S8w8DqJ
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The cool thing is that once that's done, iterating on it becomes quite simple once you have images built in a multi-platform manner
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You also need to rebuild Concourse itself (which now is a single binary coming from a single repo) - we don't ship armv7 builds yet. With concourse + dependencies + resources types all built from scratch, you're good to go! Quite timely with Docker partnering with ARM
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Here's what it takes to get it bootstrapped: - modify gdn to include fix for idmapper to work on 32bit + disable seccomp (for now), - rebuild gdn + its dependencies (runc, dadoo, gdn-init ...) - make the `registry-image` platform-aware (so it finds ARM container image refs)
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yaaay
! I just got @concourseci workers running with almost full containerization on a Raspberry PI! https://hush-house.pivotal.io/teams/main/pipelines/arm-test/jobs/test/builds/1#L5cc4cd85:2 … (had to disable seccomp - which is arch-specific -, but it's almost there!) More on ARM it soonpic.twitter.com/nQ0nDBbm5e
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Ciro S. Costa proslijedio/la je Tweet
Finally! Great step forward by the community. The hype to reward ratio of tracing is skewed in the wrong direction, and competing projects/standards were not helping. Let's help folks get the data out so we can focus on better viz/analysis. Yay!
https://medium.com/opentracing/merging-opentracing-and-opencensus-f0fe9c7ca6f0 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Ciro S. Costa proslijedio/la je Tweet
This is how an exciting commit description starts: > This work adds a NAT engine in BPF which is working together with > Cilium's BPF-based connection tracker. [...] One of the final steps to a kube-proxy free k8s environment.https://github.com/cilium/cilium/pull/7527 …
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Ciro S. Costa proslijedio/la je Tweet
At long last, v5.0 is out! Release notes: https://concourse-ci.org/download.html#v500 … - there are literally too many big things to fit here. Thanks so much to all who took part in this. Looking forward releasing much more frequently from here on!
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