enhancements
duf
enhancements | duf | |
---|---|---|
58 | 26 | |
3,257 | 12,280 | |
0.7% | - | |
9.7 | 2.9 | |
7 days ago | 2 months ago | |
Go | Go | |
Apache License 2.0 | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
enhancements
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IBM to buy HashiCorp in $6.4B deal
> was always told early on that although they supported vault on kubernetes via a helm chart, they did not recommend using it on anything but EC2 instances (because of "security" which never really made sense their reasoning).
The reasoning is basically that there are some security and isolation guarantees you don't get in Kubernetes that you do get on bare metal or (to a somewhat lesser extent) in VMs.
In particular for Kubernetes, Vault wants to run as a non-root user and set the IPC_LOCK capability when it starts to prevent its memory from being swapped to disk. While in Docker you can directly enable this by adding capabilities when you launch the container, Kubernetes has an issue because of the way it handles non-root container users specified in a pod manifest, detailed in a (long-dormant) KEP: https://github.com/kubernetes/enhancements/blob/master/keps/... (tl;dr: Kubernetes runs the container process as root, with the specified capabilities added, but then switches it to the non-root UID, which causes the explicitly-added capabilities to be dropped).
You can work around this by rebuilding the container and setting the capability directly on the binary, but the upstream build of the binary and the one in the container image don't come with that set (because the user should set it at runtime if running the container image directly, and the systemd unit sets it via systemd if running as a systemd service, so there's no need to do that except for working around Kubernetes' ambient-capability issue).
> It always surprised me how these conversations went. "Well we don't really recommend kubernetes so we won't support (feature)."
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Exploring cgroups v2 and MemoryQoS With EKS and Bottlerocket
0 is not the request we've defined. And that makes sense. Memory QoS has been in alpha since Kubernetes 1.22 (August 2021) and according to the KEP data was still in alpha as of 1.27.
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Jenkins Agents On Kubernetes
Note: There's actually a Structured Authentication Config established via KEP-3331. It's in v1.28 as a feature flag gated option and removes the limitation of only having one OIDC provider. I may look into doing an article on it, but for now I'll deal with the issue in a manner that should work even with a bit older versions versions of Kubernetes.
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Isint release cycle becoming a bit crazy with monthly releases and deprecations ?
Kubernetes supports a skew policy of n+2 between API server and kubelet. This means if your CP and DP are both on 1.20, you could upgrade your control plane twice (1.20 -> 1.21 -> 1.22) before you need to upgrade your data plane. And when it comes time to upgrade your data plane you can jump from 1.20 to 1.22 to minimize update churn. In the future, this skew will be opened to n+3 https://github.com/kubernetes/enhancements/tree/master/keps/sig-architecture/3935-oldest-node-newest-control-plane
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Kubernetes SidecarContainers feature is merged
The KEP (Kubernetes Enhancement Proposal) is linked to in the PR [1]. From the summary:
> Sidecar containers are a new type of containers that start among the Init containers, run through the lifecycle of the Pod and don’t block pod termination. Kubelet makes a best effort to keep them alive and running while other containers are running.
[1] https://github.com/kubernetes/enhancements/tree/master/keps/...
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What's there in K8s 1.27
This is where the new feature of mutable scheduling directives for jobs comes into play. This feature enables the updating of a job's scheduling directives before it begins. Essentially, it allows custom queue controllers to influence pod placement without needing to directly handle the assignment of pods to nodes themselves. To learn more about this check out the Kubernetes Enhancement Proposal 2926.
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Dependencies between Services
What your asking is a (vanilla) Kubernetes non-goal, others have mentioned fluxcd and other add ons that provide primitives for dependency aware deployments. The problem space is so large, that it's unreasonable to to address these concerns in Kubernetes itself, instead, make it extensible... Look at this KEP for example: https://github.com/kubernetes/enhancements/issues/753 Sidecar containers have existed, and been named as such since WAY before that KEP's inception, defining what these things should and shouldn't do is largely arbitrary. Aka: your use-case is niche, if you don't like the behavior, use flux or argo, or write something yourself.
- When you learn the Sidecar Container KEP got dropped from the Kubernets release. Again.
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Kubernetes 1.27 will be out next week! - Learn what's new and what's deprecated - Group volume snapshots - Pod resource updates - kubectl subcommands … And more!
If further interested, I may recommend checking out the KEP. I love how they document the decision making, and all these edge cases :).
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How can I force assign an IP to my Load Balancer ingress in “status.loadBalancer”?
See https://kubernetes.io/docs/reference/kubectl/conventions/#subresources and https://github.com/kubernetes/enhancements/issues/2590
duf
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Go: What We Got Right, What We Got Wrong
Not sure these are really popular, but I cannot resist advertising a few utilities written in Go that I regularly use in my daily workflow:
- gdu: a NCDU clone, much faster on SSD mounts [1]
- duf: a `df` clone with a nicer interface [2]
- massren: a `vidir` clone (simpler to use but with fewer options) [3]
- gotop: a `top` clone [4]
- micro: a nice TUI editor [5]
Building this kind of tools in Go makes sense, as the executables are statically compiled and are thus easy to install on remote servers.
[1]: https://github.com/dundee/gdu
[2]: https://github.com/muesli/duf
[3]: https://github.com/laurent22/massren
[4]: https://github.com/xxxserxxx/gotop
[5]: https://github.com/zyedidia/micro
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Clean mount lists in Linux
Somewhat related - `duf` is "a better `df` alternative":
https://github.com/muesli/duf
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dysk, a better df
I'm normally using duf but this looks pretty neat.
- FLaNK Stack Weekly 3 April 2023
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PPA or not to PPA
Otherwise the last option is to get the deb/appimage files from their official git repos or website, like for my use cases, MongoDB Compass (which was not officially maintained on flatpak) or duf (not available in Ubuntu repos)
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What "nice-to-have" CLI tools do you know?
duf
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What little CLI tools do you know, that do something useful and faster than regular commands? For example DUF.
What cool CLI tools do you know, that are do something faster than regular commands, and do something useful? For example: https://github.com/muesli/duf.
- Ncdu – NCurses Disk Usage
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I wrote a "12 favourite terminal tools" list-article, what did I left out that should be absolutely included?
duf - Disk Usage/Free Utility - a better 'df' alternative.
- DUF - Linux “DU” clone, shows all the details about the Linux systems disks & storage
What are some alternatives?
kubeconform - A FAST Kubernetes manifests validator, with support for Custom Resources!
hacktoberfest-swag-list - Multiple companies go above and beyond for Hacktoberfest, and this repo tries to list them all.
spark-operator - Kubernetes operator for managing the lifecycle of Apache Spark applications on Kubernetes.
gdu - Fast disk usage analyzer with console interface written in Go
kubernetes-json-schema - Schemas for every version of every object in every version of Kubernetes
rust-memchr - Optimized string search routines for Rust.
klipper-lb - Embedded service load balancer in Klipper
lakeFS - lakeFS - Data version control for your data lake | Git for data
Hey - HTTP load generator, ApacheBench (ab) replacement
visx - 🐯 visx | visualization components
connaisseur - An admission controller that integrates Container Image Signature Verification into a Kubernetes cluster
QDirStat - QDirStat - Qt-based directory statistics (KDirStat without any KDE - from the original KDirStat author)