1. Intro to Docker Containers and Orchestration in the Cloud
11/18/2018 5:51 AM
Intro to Docker Containers and Orchestration in the Cloud
@JeremyLikness
Cloud Developer Advocate
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2. Jeremy Likness https://blog.jeremylikness.com/ @JeremyLikness
Cloud Dev Microsoft
20+ Year Professional Dev
@JeremyLikness

3. https://aka.ms/advocates
@azureAdvocates

4. 11/18/2018 5:51 AM
Containers, What?
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5. 11/18/2018 5:51 AM
Before 🌩 cloud
Copyright Computer Laboratory, University of Cambridge. Reproduced by permission.
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6. Microsoft Tech Summit FY17
11/18/2018 5:51 AM
What is the right size of
servers for my business needs?
How do I deploy new code to my server?
What happens in case of
server hardware failure?
What media should I
use to keep backup?
Which packages should be on my server?
Who monitors
my App?
What size of servers
should I buy?
How often should I backup my server?
How can I increase server utilization?
How can I scale my app?
Who has physical
access to my servers?
Which OS should I use?
Do I need secondary network connection?
Are my server in a
secure location?
What happens if the
power goes out?
Who monitors
my Servers?
Do I need a UPS?
What storage I need to use?
How many servers
do I need?
How can I dynamically configure my app?
It takes how long to provision a new server?
How often should
I patch my servers?
On-Premises
The “evolution” of application platforms
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

7. Microsoft Tech Summit FY17
11/18/2018 5:51 AM
What is the right size of servers for my business needs?
How can I increase server utilization?
How many servers do I need?
How can I scale my app?
How often should I patch my servers?
How do I deploy new code to my server?
How often should I backup my server?
Which OS should I use?
Which packages should be on my server?
Who monitors my App?
On-Premises
IaaS
The “evolution” of application platforms
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8. Microsoft Tech Summit FY17
11/18/2018 5:51 AM
What is the right size of “servers” for my business needs?
How can I increase “server” utilization?
How many “servers” do I need?
How can I scale my app?
On-Premises
IaaS
PaaS
The “evolution” of application platforms
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

9. Microsoft Tech Summit FY17
11/18/2018 5:51 AM
How do I architect my app?
What runtime do I deploy?
Where do I store my containers?
Which container orchestrator should I use?
Containers, lighter than IaaS more control than PaaS
On-Premises
IaaS
PaaS
Containers
The “evolution” of application platforms
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

10. Once upon a time, long long ago …
11/18/2018 5:51 AM
Once upon a time, long long ago …
Application
Runtime OS
Hardware
Source:
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11. Infrastructure-as-a-Service (IaaS)
11/18/2018 5:51 AM
Infrastructure-as-a-Service (IaaS)
Application
Runtime OS
Virtualization
Hardware
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12. Platform-as-a-Service (IaaS)
11/18/2018 5:51 AM
Platform-as-a-Service (IaaS)
Application
Runtime OS
Virtualization
Hardware
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13. Containers Application Application Runtime Runtime Docker Host OS
11/18/2018 5:51 AM
Containers
Application
Application
Runtime
Runtime
Docker Host OS
Hardware
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14. Containers Application Container Image Runtime 11/18/2018 5:51 AM
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15. Compact Container Benefits 11/18/2018 5:51 AM
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16. Compact Consistent Container Benefits 11/18/2018 5:51 AM
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17. Compact Consistent Isolated Container Benefits 11/18/2018 5:51 AM
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18. Compact Consistent Isolated Fast Container Benefits 11/18/2018 5:51 AM
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19. Container Benefits Compact Consistent Isolated Fast Simple
11/18/2018 5:51 AM
Container Benefits
Compact
Consistent
Isolated
Fast
Simple
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20. Container Benefits Compact Consistent Isolated Fast Simple Scale
11/18/2018 5:51 AM
Container Benefits
Compact
Consistent
Isolated
Fast
Simple
Scale
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21. The Simple Stuff docker run -it --name fun jess/hollywood docker ps
docker ps –a
docker stop
docker rm
// the image is the template.
// the container is the instance.
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22. Let’s build something FROM golang:alpine as build-env RUN mkdir /src
11/18/2018 5:51 AM
Let’s build something
FROM golang:alpine as build-env
RUN mkdir /src
ADD /src
RUN cd /src && go build -o goapp
FROM alpine
RUN mkdir /app
WORKDIR /app
COPY --from=build-env /src/goapp /app
ADD /app/zork1.dat
ENTRYPOINT ./goapp
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23. Let’s build something docker build –t zork . docker images
11/18/2018 5:51 AM
Let’s build something
docker build –t zork .
docker images
docker run –it --name zork zork
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24. Your first web server mkdir tinyweb cd tinyweb code .
11/18/2018 5:51 AM
Your first web server
mkdir tinyweb
cd tinyweb
code .
FROM busybox:latest
RUN mkdir /www
COPY index.html /www
EXPOSE 80
CMD ["httpd", "-f", "-p", "80", "-h", "/www"]
docker build –t tinyweb .
docker images
docker run –d –p 8080:80 tinyweb
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25. Take it to the Cloud 11/18/2018 5:51 AM
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26. DevOps: Old vs. New Check in Code Source Repo Build Assets Deploy Web
11/18/2018 5:51 AM
DevOps: Old vs. New
Check in
Code
Source
Repo
Build
Assets
Deploy
Web
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27. DevOps: Old vs. New Check in Code Source Repo Build Image Image Repo
11/18/2018 5:51 AM
DevOps: Old vs. New
Check in
Code
Source
Repo
Build
Image
Image
Repo
Deploy
Kubernetes
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28. “Doesn’t work on my laptop”
11/18/2018 5:51 AM
“Doesn’t work on my laptop”
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29. Azure Command Line Interface (CLI)
Command line tool for managing Azure resources
Facilitates scripting
Cross-platform (Windows, macOS, Linux)
Get the Azure CLI:
Use the Azure CLI in your browser without installing a thing!

30. Create Container Registry
11/18/2018 5:51 AM
Create Container Registry
// anywhere
az group create --name devnexus-group --location eastus
az acr create --resource-group devnexus-group --name devnexuscr --sku Basic
az acr update -n devnexuscr --admin-enabled true
// on machine with image
az acr login --name devnexuscr
az acr list --resource-group devnexus-group --query "[].{acrLoginServer:loginServer}" --output table
docker tag tinyweb <loginsvr>/tinyweb:v1
docker push <loginsvr>/tinyweb:v1
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31. For Google Cloud Developers …

32. Azure Container Instance
11/18/2018 5:51 AM
Azure Container Instance
// Azure Container Instances
export PASSWORD=$(az acr credential show --name devnexuscr --query "passwords[0].value" | tr -d \")
az container create --resource-group devnexus-group --name tinyweb --image devnexuscr.azurecr.io/tinyweb:v1 --registry-password $PASSWORD --ip-address public --ports 80
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33. Demo: Web App for Containers
11/18/2018 5:51 AM
Demo: Web App for Containers
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34. 11/18/2018 5:51 AM
Composition
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35. Image A Container 1 Docker Host Crash 11/18/2018 5:51 AM
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36. Load Balancer Image A Container 2 Image A Container 1 Docker Host Bang
11/18/2018 5:51 AM
Docker Host
Load Balancer
Bang
Image A Container 1
Image A Container 2
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37. Docker Host Load Balancer Image A Container 3 Image A Container 2
11/18/2018 5:51 AM
Docker Host
Load Balancer
Image A Container 3
Image A Container 2
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38. docker-compose.yml user-facing Web Proxy service-facing Go 1 Go 2 Go 3
11/18/2018 5:51 AM
docker-compose.yml
version: '2'
networks:
user-facing:
driver: bridge
service-facing:
services:
webserver:
image: webserver
build: ./webserver
ports:
- 8000:80
- user-facing
goservice:
image: goservice
build: ./goservice
- 8080
- service-facing
proxy:
image: dockercloud/haproxy
volumes:
- /var/run/docker.sock:/var/run/docker.sock
- 8080:80
links:
- goservice
user-facing
Web
Proxy
service-facing
Go 1
Go 2
Go 3
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39. Demo: Docker Compose 11/18/2018 5:51 AM
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40. What Now? Docker Host Load Balancer Image A Container 3
11/18/2018 5:51 AM
What Now?
Docker Host
Load Balancer
Image A Container 3
Image A Container 2
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41. 11/18/2018 5:51 AM
Orchestration
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42. Orchestration: manage containers at scale
11/18/2018 5:51 AM
Orchestration: manage containers at scale
Resiliency
Scale out
Load balancing
Service discovery
Roll-out and roll-back
Secrets and configs
Storage management
Batch jobs
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43. Popular orchestrators
11/18/2018 5:51 AM
Popular orchestrators
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44. Popular orchestrators
11/18/2018 5:51 AM
Popular orchestrators
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45. K8S Concepts Container 1 Container 2 Storage 11/18/2018 5:51 AM
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46. 11/18/2018 5:51 AM
K8S Concepts
Pod
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47. K8S Concepts Node Kubelet Docker 11/18/2018 5:51 AM
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48. K8S Concepts Cluster Master 11/18/2018 5:51 AM
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49. 11/18/2018 5:51 AM
K8S high level summary
A pod is a group of related containers and storage that share an IP
A service is a related group of pods with access policies (some pods may be internal to the cluster, others may be exposed externally) and a virtual IP
A node is a working agent that runs pods and services
Nodes may span VMs
The master coordinates all nodes in the cluster
The master also handles deployments for creating and updating application instances (manage replicas)
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50. Putting it all Together
11/18/2018 5:51 AM
Putting it all Together
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51. What we’ll create …
Don’t worry … it’s easier than it looks!

52. Create and Use a Kubernetes Cluster
11/18/2018 5:51 AM
Create and Use a Kubernetes Cluster
az aks create –n devnexus-k8s –g devnexus-group
sudo az aks install-cli
az aks get-credentials –n devnexus-k8s –g devnexus-group
kubectl get nodes
// do secret stuff here
kubectl run goservice –-image devnexuscr.azurecr.io/goservice:v1
kubectl get pods
kubectl expose deployments goservice –-port=8080 -–type=LoadBalancer
kubectl get svc
Kubectl scale deployments/goservice –-replicas=3
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53. For Google Cloud Developers …

54. What we learned … Hardware -> IaaS -> PaaS -> Containers
Image vs. Instance
Docker as the host
Composition for multiple containers
Orchestration for containerized applications
Azure ACR, ACI, Web App for Containers and AKS
Kubernetes

55. https://aka.ms/dock-web

56. https://blog.jeremylikness.com/ @JeremyLikness
11/18/2018 5:51 AM
@JeremyLikness
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