kraken
kine
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kraken | kine | |
---|---|---|
1 | 12 | |
54 | 1,416 | |
- | 5.0% | |
0.0 | 8.1 | |
about 1 year ago | 9 days ago | |
Go | Go | |
BSD 3-clause "New" or "Revised" License | Apache License 2.0 |
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kraken
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Building a bare-metal Kubernetes cluster on Raspberry Pi
https://github.com/kraken-hpc/kraken
Kraken is a state engine. In the case of the Pi cluster it would work to provide network images, install and configure nodes, reboot nodes, and manipulate their state as needed to keep things running.
Another fun piece of research on Pis out of LANL is that at their altitude, 7000ft, they estimate that on average a Raspberry Pi will crash once every 2 years due to bit flips caused by cosmic rays.
kine
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Apache APISIX without etcd
-- Kine (Kine is not etcd)
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Goodbye Etcd, Hello PostgreSQL: Running Kubernetes with an SQL Database
Looking at [1], is there any reason why this couldn’t run in something like DynamoDB? I feel like the operations required would fit
https://github.com/k3s-io/kine/blob/master/pkg/drivers/gener...
- K3s to Skill Up?
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What is going on with Kubernetes Microdistros?
I don't like some of the decisions that k3s makes which is why I stay away from it, but it's a great project. I'm not using kine yet, but I fantasize about using it exclusively every time I deal with etcd-induced slowness/random CPU spikes on my group of controller nodes. k0s supports kine too of course but I just haven't switched it on yet.
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Databases = Frameworks for Distributed Systems
Well in some situations you can also get away with CRDTs or Gossip (SWIM), but yeah in the general sense Paxos (Raft is a Paxos-family algo). There are lots of paxos family algos to choose from[0].
> I’m also currently building a distributed search engine using etcd for the service registry, broker peer announcements, and worker queue and it’s been a good experience so far.
As a random stranger on the internet, please build an abstraction layer around etcd. Even if there's only one implementation, I've found that so many distributed projects that just never reach the scale that etcd is built for would benefit from the option of writing their own drivers (you don't need a full plugin system just a regular abstraction layer).
One example is Kine[0] for k8s -- if k8s had a built in option for writing/reading from something like Postgres from the beginning it would have been a better project for it, IMO.
If you do build a plugin system though, you can pass off the work of maintaining the other implementations!
[0]: https://vadosware.io/post/paxosmon-gotta-concensus-them-all
[1]: https://github.com/k3s-io/kine
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K8s on Pg
I could spent >0s looking into this, but I've been curious how kline implements Etcd's Watch API. For the matter, I don't have much idea in general how kline handles data. Kline would be a great candidate for a blog post or introductory technical article on.
I do quickly see one issue- evidently watches presently use polling. The issue requests use of postgres triggers: https://github.com/k3s-io/kine/issues/20
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Kubernetes but with Hashicorp Consul instead of ETCD for the control plane?
check out https://github.com/k3s-io/kine
- Building a bare-metal Kubernetes cluster on Raspberry Pi
- Rancher Desktop, a Docker Desktop Replacement
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rqlite 6.0: the evolution of a distributed database design
Not to be mistaken for high-availability Dqlite[1], which is one of the options one can run the k3s kubernetes distribution on (instead of etcd), via the Kine etcd shim[2]. Ultimately though the K3s team replaced Dqlite with an embedded etcd to get high-availability[3].
[1] https://dqlite.io/
[2] https://github.com/k3s-io/kine
[3] https://rancher.com/docs/k3s/latest/en/installation/ha-embed...
What are some alternatives?
raspberry-pi-1u-server - A low power 1U Raspberry Pi cluster server for inexpensive colocation.
kubernetes - Production-Grade Container Scheduling and Management
raspi-cluster - Notes and scripts for setting up (yet another) Raspberry Pi computing cluster
k3s - Lightweight Kubernetes
warewulf - Warewulf is a stateless and diskless container operating system provisioning system for large clusters of bare metal and/or virtual systems.
dqlite - Embeddable, replicated and fault-tolerant SQL engine.
kilo - Kilo is a multi-cloud network overlay built on WireGuard and designed for Kubernetes (k8s + wg = kg)
flux2 - Open and extensible continuous delivery solution for Kubernetes. Powered by GitOps Toolkit.
kubernetes - Production-Grade Container Scheduling and Management [Moved to: https://github.com/kubernetes/kubernetes]
Bare-metal-Space-Invaders-Clone - A basic clone of space invaders that runs without an operating system just using BIOS calls.
cluster-api - Home for Cluster API, a subproject of sig-cluster-lifecycle