Ignite Kubernetes Community Meeting Presentation

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1 Fire up your VMs with Weave Ignite Lucas Käldström - CNCF Ambassador 29th of August, 2019 - Kubernetes Community Meeting Image credit: @ashleymcnamara

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2 $ whoami Lucas Käldström, soon-to-be University Student, 19 yo CNCF Ambassador, Certiﬁed Kubernetes Administrator and (former) Kubernetes WG/SIG Lead KubeCon Speaker in Berlin, Austin, Copenhagen, Shanghai & Seattle KubeCon Keynote Speaker in Barcelona Kubernetes approver and subproject owner, active in the community for 3+ years. Got kubeadm to GA. Weave Ignite creator Driving luxas labs which currently performs contracting for Weaveworks

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3 https://www.weave.works/blog/fire-up-your-vms-with-weave-ignite

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4 Weave Ignite “An open source Virtual Machine (VM) manager with a container UX and built-in GitOps management” - Firecracker MicroVMs & OCI containers to unify containers and VMs. - Works in a GitOps fashion; manages VMs declaratively

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5 Why? Originates from my Finnish conscription time; where I worked on programming tasks We needed to: a) Use open source (no “normal” VM licenses) b) Run legacy applications with “special requirements” c) Integrate with containers

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6 How? BUT: Firecracker is HARD to use (for those who happen to not be KVM devs)

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8 Weave Ignite User Stories “I can boot a VM in less than a second!” “I can run fast & secure VMs alongside containers” “I can declaratively manage a ﬂeet of VMs through Git” “I can boot up a Kubernetes cluster in seconds”

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9 # Let's run the weaveworks/ignite-ubuntu docker image as a VM # Use 2 vCPUs and 1GB of RAM, enable automatic SSH access and name it my-vm ignite run weaveworks/ignite-ubuntu \ --cpus 2 \ --memory 1GB \ --ssh \ --name my-vm # List running VMs ignite ps # List Docker (OCI) and kernel images imported into Ignite ignite images ignite kernels # Get the boot logs of the VM ignite logs my-vm # SSH into the VM ignite ssh my-vm Demo!

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10 Ways to use Ignite - Docker-like UX - imperatively, using the CLI - GitOps or Manifest Directory - declaratively, using YAML/JSON ﬁles - (Future) Virtual Kubelet - declaratively, using the Kubernetes API

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11 Design & Architecture Use OCI for: a) content distribution b) monitoring processes c) process isolation Device Mapper & DHCP bridges containers + VMs

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12 Building VM images (the new way)

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13 GitOps all the things! a) Store desired state in Git b) Run an app reconciling desired => actual state c) App writes status back to Git d) Can observe diffs between observed and desired state

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14 => gitops-toolkit Prototype to make any app Git-backed Generic framework built upon k8s.io/apimachinery Common code broken out from Ignite

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15 Run Kubernetes on top of Ignite VMs - kind (yet TODO) - kubeadm HA sample guide - Footloose (like docker-compose) - Cluster API providers

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16 Read the Docs

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Thank you! @luxas on Github @luxas on Kubernetes’ Slack @kubernetesonarm on Twitter [email protected]