Building Microservice Systems Without Cooking Your Laptop: Going “Remocal” with Docker, Telepresence & Kubernetes

Building Microservice Systems
Without Cooking Your Laptop
Going “Remocal” with Docker, Telepresence & Kubernetes
Daniel Bryant
@danielbryantuk
Felipe Cruz
@felipecruz

@danielbryantuk | @felipecruz
tl;dr
2
• The inner development loop can be painful with microservices & Kubernetes
• Docker Desktop enables your development journey to cloud native
• Telepresence “proxies” your local machine into the cluster, increasing fast feedback
• Docker Desktop Extension for Telepresence enables “remocal” development
• Telepresence supports several workflows to make you more productive

@danielbryantuk
3
Daniel Bryant
@danielbryantuk
Ambassador Labs
Felipe Cruz
@felipecruz
Docker

Setting the Scene
4

Inner and outer dev loops
5
Hat tip to Mitch Denny (now 404): https://mitchdenny.com/the-inner-loop/
http://jorgemoral.es/posts/2020_03_17-develop_apps…

SOA: There’s just more stu
ff
(and dependencies)
6

So, let’s run everything locally…
7

Docker Desktop becomes your second IDE
Body Text
8

But if you’re
successful…
Mo’ services,
mo’ problems
9

tl;dr
10
“My laptop only has 16GB
RAM and you’re asking it
to run Kubernetes and a
JVM and a database???”

Okay, let’s run everything remotely…
11

Inner and outer dev loops with K8s
can be the same
12
• Write code
• Build container
• Push to registry
• Deploy to cluster
• Test
And can be …. SLOW.

Automation can help…
13

tl;dr
14
But you want a really fast inner loop (no docker build/push) …

tl;dr
15 And you want to use your own tools.

tl;dr
16
And you want to avoid the “works on my machine”
production vs local development debacle

17
+

What are Docker Extensions?
Extend Docker Desktop
A way to add new functionality into
Docker Desktop
Improve your team workflows
Connect your favorite dev tools to your
application development and
deployment workflows
Distribution channel
for your tooling
A way for the community and partners
to reach million of developers
18

What is Telepresence
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• “Fancy Kubernetes VPN for development”
• “kubectl port-forward on steroids”
• “kubectl proxy all-the-things”
• A network bridge between your laptop and the Kubernetes cluster

Demo Time!
20

Our Emoji-User Demo App $$$
21
Web
Emoji
User
Ambassador
Edge Stack
(Ingress)
T
A
Traf
fi
c-
manager
User

Docker Desktop Extension for Telepresence
22
getambassador.io/testing-with-telepresence-and-docker

Key scenarios
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Remocal development
24
www.slideshare.net/dbryant_uk/jax-london-22-debugging-microservices-remocally-in-kubernetes-with-telepresence

Testing Microservices: What to use, when
25
Mocks Service virtualization Remocal
Unit tests ✅
Integration tests ✅ ✅
Component tests ✅ ✅ ✅
End-to-end tests ✅ ✅
Poking around an
existing API
✅
Building an API ✅ ✅

Continuous Delivery
26
https://learning.oreilly.com/library/view/continuous-delivery-in/9781491986011/ch01.html#idm140291459013360
https://www.youtube.com/watch?v=hJkhPP2OLA8&t=291s

27
Continuous Delivery and build pipelines

Wrapping up
28

Telepresence is a CNCF project, with a wide variety of users
29

Conclusion
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• The inner development loop can be painful with microservices & Kubernetes
• Docker Desktop enables your development journey to cloud native
• Telepresence “proxies” your local machine into the cluster, increasing fast feedback
• Docker Desktop Extension for Telepresence enables “remocal” development
• Telepresence supports several workflows to make you more productive

Thank you! Questions?
31
Sample code and extensions:
• github.com/ambassadorlabs/docker-extension-telepresence-java
• docs.docker.com/desktop/extensions/
Learn more:
• www.getambassador.io/kubernetes-learning-center/telepresence-docker-extension/
• hub.docker.com/extensions/ambassador/telepresence-docker-extension

Building Microservice Systems Without Cooking Your Laptop: Going “Remocal” with Docker, Telepresence & Kubernetes

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Building Microservice Systems Without Cooking Your Laptop: Going “Remocal” with Docker, Telepresence & Kubernetes