singularity
singularity
singularity | singularity | |
---|---|---|
3 | 6 | |
665 | 2,495 | |
2.3% | 0.6% | |
9.8 | 0.0 | |
7 days ago | over 1 year ago | |
Go | Go | |
GNU General Public License v3.0 or later | 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.
singularity
- is singularity-ce with centos 7 kernel 3.10.el7.x86
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Docker containers usually still reachable even if bound to 127.0.0.1
rkt (and many other container solutions) was introduced after docker was released and became popular... they even mentioned docker's shortcomings as a motivation for the project creation [0]. It had all the same problems as other replacement software: there were plenty of bugs and missing features, documentation was limited, and there are no community to help you (the announcement explicitly mentions "prototype quality release"). None of those would be fatal if it was significantly better than docker, but it was not -- it was basically the same functionality. So almost no one made the switch. It is closed now [1]
And why "rkt"? There were much better alternative container runtimes. For example Sylabs Singularity [2] -- container-as-a-file, instant mounting, etc... I wish more people knew about it.
[0] https://web.archive.org/web/20141201181834/https://coreos.co...
[1] https://github.com/rkt/rkt#warning-end-of-project-warning
[2] https://github.com/sylabs/singularity#singularityce
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ELI5: Why does the FreeBSD community hate Docker and Kubernetes so much?
Docker (and the current generation of OCI runtimes) is rather shitty at host OS isolation too. It may have started well, but over time more capabilities were added for the convenience of developers and at the cost of maintainers. I would personally love if the ecosystem were to shift to more isolated workloads with better HPC support. Singualrity looks promising but still maintains OCI compatibility.
singularity
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Just a warning about typos
Old Singularity repo: https://github.com/apptainer/singularity
- Singularity – Open Source Container System for Secure High Performance Computing
- Singularity – Open-Source Container System for Secure High Performance Computing
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Podman: A tool for managing OCI containers and pods
This sounds exactly like Singularity http://singularity.hpcng.org/
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What is a singularity container and how do I use it?
never used it but a very popular example of a container is docker (that link says what a container is) and singularity just looks like another container flavour (maybe specific to HPCs?)
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Youki, a container runtime in Rust, passed all the default tests provided by opencontainers.
The re-exec pattern is not the only way you can solve this in Go. I actually rebuilt a container runtime from C to Go (for the HPC market) and we had to solve this problem. We did it by essentially forking before any Go code gets run. Here’s the code for the main binary that actually spawns the container process. It’s half C, half Go. https://github.com/hpcng/singularity/tree/master/cmd/starter
What are some alternatives?
apptainer - Apptainer: Application containers for Linux
podman - Podman: A tool for managing OCI containers and pods.
singularity-cri - The Singularity implementation of the Kubernetes Container Runtime Interface
warewulf - Warewulf is a stateless and diskless container operating system provisioning system for large clusters of bare metal and/or virtual systems.
img - Standalone, daemon-less, unprivileged Dockerfile and OCI compatible container image builder.
gitlab-runner
ufw-docker - To fix the Docker and UFW security flaw without disabling iptables
kaniko - Build Container Images In Kubernetes
rkt
cockpit-podman - Cockpit UI for podman containers