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Kubernetes k3s lightweight distro
Smooth Operator
The End Is Nigh
I hope your appetite has been suitably whetted. I can't help but think k3s is going to change the way I test Kubernetes.
Being a Linux fan, I often find myself telling non-technical people that most of their televisions, broadband routers, and smartphones use Linux (never mind spacecraft and space stations), and I wonder how long it will be before I'm saying that about embedded versions of Kubernetes.
If you run into problems with k3s, detailed, well-presented docs can be found at the main website [6]. You can use the /usr/local/bin/k3s-uninstall.sh
file to uninstall k3s after testing. The output from the script is nice and clear.
Lest you forget the venerable Docker, the docs state: "K3s includes and defaults to containerd …. If you want to use Docker instead of containerd then you simply need to run the agent with the --docker
flag" [12].
You can see the Docker run time in action with:
$ k3s agent -u ${MASTER} --token ${TOKEN} --docker &
The next time you have your dog chipped or your washing machine does a software update to change the tune it plays after finishing a load of washing, consider where the IoT evolution is taking us and exactly what part you and the technology you use might play in it.
Infos
- "100,000 IoT sensors line canal in China's ambitious water diversion project" by Andrew Hobbs, Internet of Business , January 15, 2018: https://internetofbusiness.com/100000-iot-sensors-line-chinas-ambitious-water-diversion-project
- k3s: https://k3s.io
- Rancher website: https://rancher.com
- GitHub: https://github.com/rancher/k3s
- etcd: https://etcd.io
- k3s docs: https://rancher.com/docs/k3s/latest/en/
- containerd: https://containerd.io
- Cluster networking broken? https://github.com/rancher/k3s/issues/24
- AWS: https://aws.amazon.com/
- Terraform: https://www.terraform.io/
- Roles for Worker nodes: https://github.com/rancher/k3s/issues/878
- Docker as the container run time: https://rancher.com/docs/k3s/latest/en/advanced/
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