Kubernetes is pushing out of the data center into stores, networks and factories. DevOps teams are excited about Kubernetes because it provides predictable operations and a cloud-like provisioning experience on just about any infrastructure. For the last year Rancher Labs has been working with organizations to create a lightweight implementation of Kubernetes that is easy to operate and can run on x86 and ARM infrastructure without using more than 512 MB of memory. To meet these requirements we’ve developed a new distribution of Kubernetes that is designed for teams that need to deploy applications quickly and reliably to resource-constrained environments. We’ve called it k3s. These slides are from an online meetup hosted March 13th, 2019, in which Rancher co-founders Shannon Williams and Darren Shepherd demonstrated k3s’ features and discussed: What you need to run k3s on the edge How to develop an operational model for single-node and clustered edge environments built using k3s How to manage hundreds of micro-clusters using k3s

1. March 13, 2019#k3s
Introducing k3s - a Lightweight
Kubernetes Distribution

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Darren Shepherd
Co-Founder/Chief Architect
Rancher Labs
@ibuildthecloud
#RancherMeetup
Shannon Williams
Co-Founder/VP Sales & Marketing
Rancher Labs
@smw355

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First things first…
This is a not a !
#RancherMeetup

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There are rules for a meetup!
• We won’t be done on time
• Questions are always welcome
• There are no bad questions
• Demo, then demo some more
• Things will break, be patient
#RancherMeetup

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This meetup is being recorded!
http://youtube.com/c/rancher
#RancherMeetup

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Join the conversation on Twitter
#RancherMeetup
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7. 7#RancherMeetup

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Agenda
1. Rancher Introduction - Shannon
2. Increasing demand for an edge-optimized Kubernetes - Shannon
3. Introducing k3s – a micro-distribution of Kubernetes - Darren
4. Demo - Darren
5. Questions and Getting Started

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Rancher is an Open Source
Container Management Platform
© 2018 Rancher Labs, Inc. – CONFIDENTIAL, DO NOT DISTRIBUTE
Team n
Container ManagementDevOps
Team 2
Team 1
Identity/RBA
C
Monitoring
Registry
Jenkins
Cassandra
Node
TeamCity
SQL
J2EE
Bamboo
MsSQL
.Net
Security
Logging
Central IT

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Rancher is an Open Source
Container Management Platform
Unified Cluster
Operations
Self Service
Kubernetes Environments
Infrastructure
GKE AKSEKS AnyRKE RKE
- User Interface
- Service
Catalog
- CI/CD
- Monitoring
- Logging
- Alerting
Central
IT
DevOps - Provisioning
- Auth/RBAC
- Policy
- Security
- Capacity
- Cost

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Introducing Submariner.io
https://info.rancher.com/meetup-introducing-submariner-multicluster-networking

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Introducing K3s

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In the last year we’ve seen a major increase in the
demand for Kubernetes outside the datacenter
https://www.youtube.com/watch?v=8edDcy3oeUo

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In the last year we’ve seen a major increase in the
demand for Kubernetes outside the datacenter
https://tech.target.com/infrastructure/2018/06/20/enter-unimatrix.html

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In the last year we’ve seen a major increase in the
demand for Kubernetes outside the datacenter
https://kccncchina2018english.sched.com/event/FzEF?iframe=no

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Containers and Kubernetes are an excellent choice
for deploying complex software to the edge
• Containers are awesome
• Consistent across a wide variety of infrastructure
• Capable of standalone or clustered operations
• Easy to upgrade and/or replace containers
• Support for different infrastructure configs (storage, cpu, etc)
• Strong ecosystem (monitoring, logging, CI, management, etc)

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Our journey to building an edge-optimized k8s
distro started with Rancher
- Open source
- Multi-cluster management
- Deploy k8s anywhere
- Manage any k8s cluster

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In late 2017, we pulled out RKE our Kubernetes
installer
- Open-source k8s
installer and distribution
- Externally define cluster
config
- Launch services and
add-ons as part of
deployment

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However, running Kubernetes on the edge left us
with some challenges
• Most Kubernetes distributions don’t support ARM
• Kubernetes could easily consume up to 4gb of RAM
• Kubernetes wasn’t built for embedded or offline management
• Need for simplified operations

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Introducing k3s
• Lightweight certified Kubernetes distro
• Built for production operations
• 40MB binary, 512MB memory consumption
• Single process w/ integrated Kubernetes master,
Kubelet, and containerd
• SQLite in addition to etcd
• Simultaneously released for x86_64, ARM64, and
ARMv7
• Open source project, not yet a Rancher product

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To build k3s we removed unnecessary code and
made a few enhancements

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How k3s works

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K3s use cases
1. Edge computing and Embedded systems
2. IOT Gateway
3. CI environments
4. Single-App Clusters
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Get started with k3s in two easy steps

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Demo

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Fleet Management for Edge Clusters
1. Multi-cluster operations (monitoring, logging, etc.)
2. Centralized access control and user management
3. Centralized security policies
4. Multi-cluster application templates
5. CI environments

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Building Operations for 1000s of clusters
Centralized Operations
Infrastructure
k3s k3sk3s k3sk3s k3s
- Cluster Ops
- OS Management
- Application
Management
- Monitoring
- Logging
- Alerting
- Policy
- Security
- Capacity
- Offline Clusters

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http://k3s.io

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https://github.com
/rancher/k3s

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Rancher Quick Start Guide
https://rancher.com/docs/rancher/v2.x/en/quick-start-guide/

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Rancher, RancherOS, k3s, RKE are in GitHub
http://github.com/rancher

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Thank you
@Rancher_Labs · #RancherMeetup