A hands-on guide to deploying applications in Rancher's new Kubernetes environments Over the last few months our team at Rancher Labs has been adding support for Kubernetes natively within Rancher. Our implementation of Kubernetes takes advantage of Rancher’s platform orchestration, simple UI, access control, networking and storage capabilities to deliver simple to deploy Kubernetes clusters for managing applications. In our February meetup we introduced this new support, and discussed how these Kubernetes environments compare with our native Docker environments and help you understand when and how each can be used to power your containers. Our new support for Kubernetes will be available in Rancher in our next major release in March. In this recording we demonstrated: - Deploying a Kubernetes Cluster within Rancher - Launching Kubernetes Pods and Replication Controllers - Leveraging Rancher services within Kubernetes - Understanding the differences between Kubernetes and native Docker environments - Service discovery, scheduling and high availability within Kubernetes

1. © 2015 Rancher Labs, Inc.© 2015 Rancher Labs, Inc .
Introducing Kubernetes Environments
in Rancher
February 25, 2016
#ranchermeetup

2. © 2015 Rancher Labs, Inc.
Shannon Williams
Co-Founder/VP Marketing
@smw355
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Darren Shepherd
Co-Founder/Chief Architect
@ibuildthecloud
Freenode: darren0
#ranchermeetup

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First things first…
This is a not a !
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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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Join the conversation on Twitter
#ranchermeetup

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Agenda
• Introducing Kubernetes Environments in Rancher – Shannon
• Demo: Launching a Kubernetes Environment – Darren
• Demo: Deploying an Application on Kubernetes – Darren
• Latest Rancher Updates – Darren
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Rancher Labs
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Rancher Overview
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Rancher Catalog
AD/LDAP
Alerts/Events
Environment 1 Environment N
…
Network Services Storage Services
Container Orchestration and Scheduling
User Mgmt Ops Mgmt
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9. © 2015 Rancher Labs, Inc.
Introducing
Kubernetes
Environments
in Rancher
#ranchermeetup

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Kubernetes
Kubernetes is open source software for managing a
cluster of servers and deploying applications.
• Started by Google, but widely contributed to at
this point
• Latest version is 1.2
• Powerful app management concepts
• First project contributed to the Cloud Native
Computing Foundation (CNCF)
• Kubernetes.io
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Native Kubernetes support in Rancher
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• Automated deployment of an unlimited number of
Kubernetes clusters
• Control user access to Kubernetes clusters
• Simple to use UI for Kubernetes
• Supports cross zone, cloud or datacenter
deployments
• Node provisioning through Docker Machine
• Access Rancher services including:
- Multi-host Networking
- Load Balancer
- Application Catalog
- Persistent Storage Services
- Metadata Service

12. © 2015 Rancher Labs, Inc.
Inside a Rancher Kubernetes
Environment
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Environment A
apiserver
etcd
scheduler
controller
kubelet
proxy
dns service
metadata service
network agent
system services

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• Pods are the smallest unit in
Kubernetes
• Each pod is a group of
tightly coupled containers
and volumes
• Unique ID, allocated to a
specific host.
• Rancher allocates a private
IP on the rancher network to
each pod
Kubernetes Pods

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• Replication Controllers
define the number of copies
of a pod that are launched.
• RCs are managed by the
Kubernetes controller, which
works with the scheduler to
achieve the desired state.
Kubernetes Replication Controllers

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Inside a Rancher Kubernetes
Environment
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system services
Environment A
replication controller
container
pods pods
containerapp2
container
pods pods pods
container container
replication controllerapp1

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• Services in Kubernetes
typically define a cluster IP
for a group of pods
• Cluster IPs are on a
separate subnet from the
pod IPs.
Kubernetes Services

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Inside a Rancher Kubernetes
Environment
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system services
Environment A
replication controller
container
pods pods
containerapp2
container
pods pods pods
container container
replication controllerapp1
Pod IP
10.42.x.x
Pod IP
10.42.x.x
Pod IP
10.42.x.x
Pod IP
10.42.x.x
Pod IP
10.42.x.x
Service IP
10.43.x.x
service
service
Service IP
10.43.x.x

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• Simple web access to
Kubectl for running any
Kubernetes commands.
• Leverage Rancher users
and authentication to control
access to Kubectl.
Full access to Kubectl

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Demo
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Latest Rancher Enhancements
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0.56
• Improved Rancher Managed Network
• UI Enhancements
• Health Check Action Strategies
• Rancher Metadata Service Update
0.59
• Support Retaining Container IP on container upgrade or
destroy
• Added support for Docker 1.10
• Split Rancher Catalog into Library & Community
#ranchermeetup

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http://info.rancher.com/beta

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Getting Started
Rancher and RancherOS are in GitHub – Get Involved, Join the Beta
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http://github.com/rancher

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New eBook: Building a CI/CD Pipeline
with Docker & Rancher
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http://info.rancher.com/cicd-with-docker-ebook

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Thank you
rancher.com
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