Cloud Native Computing Foundation KubeCon + CloudNativeCon Europe 2021, 15 May 2021

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From YouTube: Sponsored Session: Mirantis - Introducing K0s 0.13 and kosctl

Description

Don’t miss out! Join us at our upcoming event: KubeCon + CloudNativeCon North America 2021 in Los Angeles, CA from October 12-15. Learn more at https://kubecon.io The conference features presentations from developers and end users of Kubernetes, Prometheus, Envoy, and all of the other CNCF-hosted projects.

Sponsored Session: Mirantis - Introducing K0s 0.13 and kosctl

Speakers: Miska Kaipiainen

K0s (k0sproject.io/https://github.com/k0sproject) is a single-binary Kubernetes distribution engineered to make Kubernetes frictionless. It installs with a single command and runs on (almost) any Linux, on i86 and arm6/7 hardware, on Raspberry Pis, VMs, or datacenter bare metal. In this session, we'll demo k0s 0.13, which uses kube-router as CNI (released on Friday, April 9). We'll show native (i.e., one-command) deployment, and more sophisticated deployments using the open-source, community-developed 'kosctl' management framework.

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Hello, I'm john janeshig from mirantis and today, I'm here to talk about k0s k0s is a single binary, kubernetes distribution. It's packaged with its own cli has a lot of features, helpers flexibility options. It runs on pretty much anything from raspberry pi's to data centers, x86 3264, arm 3264..

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It runs on linux, but apart from a kernel version requirement, it's very agnostic there as well. It runs on ubuntu, rel, amazon, linux, alpine, raspberry pios and so on.

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K0S has a lot of downloads on github. It has 3.5 k, star, gazers, 139, forks lots of activity, a very, very interesting and committed community. So a lot of people are involved in this project.

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One of the things that's most interesting- at least you know to people like me about k0s- is how many different ways there are to install it and how easy, fundamentally installing it is no matter which way you choose. I'm going to show you three ways to install k0s today.

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The first one is simply by starting at a docker container, just install docker and issue a command to start a container. Everything gets pulled in.

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And in about 20 seconds, k0s is running. I'm going to speed life up a little bit. The k0cli is packaged inside the container and gives access to coupe ctl. So you can issue commands directly through the container exec.

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You can also grab a cube config through the exec, save it locally, and then you can copy it and use it to light up the kubernetes ide lens.

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The second way you can install a lens is manually there's a single script that can be used to download lens on nodes and then the cli lets you start and enable services.

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Here I've set up two ubuntu 1804 machines on virtual boxes as controller and worker. I just log into what will be the controller node node 1 and run the script.

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Then you run an install command that builds directories and sets other things up.

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And then you start and enable the installed services giving yourself a controller node that survives restarts.

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Now that your controller node is running, we're going to grab the auto generated, qpml called admin conf in this case and we're going to copy it over to lens and use it to connect to the cluster. Once we've created a worker node for the moment, we'll leave lens connecting to the controller. In the background back on our controller, we're going to generate a worker token and we will again cut and paste it this time to the other machine.

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Popping a new terminal window, we ssh into node 2 and perform the same formula. First, we run the script to install.

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Then we cut and paste the token from our other machine into a file on the worker machine.

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Then we run the install again this time, handing the k0cli the token to create a worker.

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And then, as with the controller, we start and enable the worker services.

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Backend lens, which shows as real call we've attached to the cluster already all that's left, is to watch all the services spin up.

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The third and probably best way to build uh k-series clusters is with its community-created lifecycle manager. K0Ctl k0ctl runs on linux, mac and windows as a command line application just download it, make it executable and run it use the koctl cli to generate a config file which is easy to modify. I'm hooking it up with ip addresses and other parameters for three servers. I just started on aws then apply the config.

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Okay 0ctl goes out checks, machine facts, pulls back information, installs all the components and waits for them to start up then hands you what you need to know to connect to the cluster again, I'm going to copy the kube config to a file, and I'm going to use it to light up lens.

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Of course, the aws vms are much faster. So by the time we spin up, everything is green.

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The last thing I'm going to show you is a lens extension lens has an entire framework built in that allows creation and easy loading of extensions from the community. This is an extension that creates a force-directed graph of all the resources in your kubernetes cluster, and it's a lot of fun to play with. So that's it. Please visit the mirantis booth. If you get a chance talk to us about k0s, about lens or about the other stuff. That mirantis makes and thank you for watching and listening.