runc
buildah
runc | buildah | |
---|---|---|
32 | 25 | |
11,441 | 7,019 | |
0.8% | 1.0% | |
9.3 | 9.6 | |
about 17 hours ago | about 15 hours ago | |
Go | Go | |
Apache License 2.0 | Apache License 2.0 |
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.
runc
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Nanos – A Unikernel
I can speak to this. Containers, and by extension k8s, break a well known security boundary that has existed for a very long time - whether you are using a real (hardware) server or a virtual machine on the cloud if you pop that instance/server generally speaking you only have access to that server. Yeh, you might find a db config with connection details if you landed on say a web app host but in general you still have to work to start popping the next N servers.
That's not the case when you are running in k8s and the last container breakout was just announced ~1 month ago: https://github.com/opencontainers/runc/security/advisories/G... .
At the end of the day it is simply not a security boundary. It can solve other problems but not security ones.
- Several container breakouts due to internally leaked fds
- Container breakout through process.cwd trickery and leaked fds
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US Cybersecurity: The Urgent Need for Memory Safety in Software Products
It's interesting that, in light of things like this, you still see large software companies adding support for new components written in non-memory safe languages (e.g. C)
As an example Red Hat OpenShift added support for crun(https://github.com/containers/crun) this year(https://cloud.redhat.com/blog/whats-new-in-red-hat-openshift...), which is written in C as an alternative to runc, which is written in Go(https://github.com/opencontainers/runc)...
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Run Firefox on ChromeOS
Rabbit hole indeed. That wasn't related to my job at the time, lol. The job change came with a company-provided computer and that put an end to the tinkering.
BTW, I found my hacks to make runc run on Chromebook: https://github.com/opencontainers/runc/compare/main...gabrys...
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Crun: Fast and lightweight OCI runtime and C library for running containers
being the main author of crun, I can clarify that statement: I am not a fan of Go _for this particular use case_.
Using C instead of Go avoided a bunch of the workarounds that exists in runc to workaround the Go runtime, e.g. https://github.com/opencontainers/runc/blob/main/libcontaine...
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Best virtualization solution with Ubuntu 22.04
runc
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Bringing Memory Safety to sudo and su - with Ferrous Systems and Tweedegolf
Not OP, but if I had to guess, a lot of this can be picked up by just observing common security issues in the Linux space, since similar mistakes and oversights have caused quite a few real-world CVEs in the past, e.g. this random example of a TOCTTOU vulnerability in runc.
- Containers - entre historia y runtimes
- [email protected]+incompatible with ubuntu 22.04 on arm64 ?
buildah
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A gopher’s journey to the center of container images
For the task of building the graph image, my first idea was to rely on buildah. In fact, our design was already heavily relying on containers/image for all things regarding copying images from one registry to the other, or from one registry to an archive. The obvious choice was to use the same suite of modules in order to keep dependencies to a minimum.
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Podman Desktop for Java Development
I appreciate that podman can run daemonless, but I've gotten tired of waiting for them to implement heredoc support and have continued to use docker.
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How to use Podman inside of a container
You do realize that, under the hood, buildah uses a container engine (runc by default)? See https://github.com/containers/buildah/blob/main/docs/buildah...
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Container and image vocabulary
buildah
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How to use Buildah to create a build-service written in golang
I found this small tutorial: https://github.com/containers/buildah/blob/main/docs/tutorials/04-include-in-your-build-tool.md and it works.
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From code to customers in just 13 seconds.
# https://github.com/containers/buildah/issues/3666 volume /var/lib/containers
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Podman v4.4, Buildah v1.29 released!
Last week, Buildah version 1.29 was also released. The prune command has been added to clean intermediate images as well as the build and mount cache. Support for the –group-add option to the from and build commands was added. One useful feature of this, it to use the –group-add keep-groups option, which allows rootless users to take advantage of their group access to file and devices mounted into the build containers. And the –cache-from and –cache-to options for the build command now allow for multiple sources. This can be used to improve the speed of builds, especially in CI/CD environments.
- Crafting container images without Dockerfiles
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Rails on Docker · Fly
Unfortunately this syntax is not generally supported yet - it's only supported with the buildkit backend and only landed in the 1.3 "labs" release. It was moved to stable in early 2022 (see https://github.com/moby/buildkit/issues/2574), so that seems to be better, but I think may still require a syntax directive to enable.
Many other dockerfile build tools still don't support it, e.g. buildah (see https://github.com/containers/buildah/issues/3474)
Useful now if you have control over the environment your images are being built in, but I'm excited to the future where it's commonplace!
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Container Deep Dive 2: Container Engines
For more information regarding the bundled tools see: CRI tools.
What are some alternatives?
crun - A fast and lightweight fully featured OCI runtime and C library for running containers
kaniko - Build Container Images In Kubernetes
Moby - The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems
buildkit - concurrent, cache-efficient, and Dockerfile-agnostic builder toolkit
youki - A container runtime written in Rust
rules_docker - Rules for building and handling Docker images with Bazel
podman - Podman: A tool for managing OCI containers and pods.
SSVM - WasmEdge is a lightweight, high-performance, and extensible WebAssembly runtime for cloud native, edge, and decentralized applications. It powers serverless apps, embedded functions, microservices, smart contracts, and IoT devices.
containerd - An open and reliable container runtime
conmon - An OCI container runtime monitor.
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