meteatamel / knative-tutorial

A collection of samples for Knative Serving, Knative Eventing and Knative-GCP projects.

Hi 👋, I'm Mete Atamel

I’m a Software Engineer and a Developer Advocate with 18+ years of experience. Currently, I work in the Developer Relations team at Google in London. I build tools, demos, tutorials, and give talks to educate and help developers to be successful on Google Cloud. As a regular speaker at tech conferences, I have spoken over 345+ events since 2016 on modern application development topics such as Kubernetes, Istio, Knative, serverless, event-driven architectures, and microservice orchestration. Prior to my current role, I was a Software Engineer/Architect/Tech Lead at Nokia, EMC, Adobe, Skype, and Microsoft building various client and server technologies, resulting in multiple patents.

• 📝 I regularly write articles on https://atamel.dev/

• 📫 How to reach me [email protected]

• 📄 Know about my experiences https://www.linkedin.com/in/meteatamel

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knative-tutorial's Issues

Image processing pipeline - filter service

Image filter service to filter unsafe images determined by Vision API

Trigger configuration doesn't work as expected

While following instructions specified in https://github.com/meteatamel/knative-tutorial/blob/master/docs/helloworldeventing.md, trigger gets created but ready state is false.

kubectl get trigger
NAME READY REASON BROKER SUBSCRIBER_URI AGE
trigger-event-display False Unable to get the Subscriber's URI default 5s

Describe command on trigger returns following message:

failed to get ref &ObjectReference{Kind:Service,Namespace:default,Name:event-display,UID:,APIVersion:serving.knative.dev/v1,ResourceVersion:,FieldPath:,}: services.serving.knative.dev "event-display" not found

Update samples to use Knative 0.10.0

Add a Sequence sample

Add HTTPS setup scripts

Test and update for Knative 0.11

support istio v1.5

first off: huge thank you for this guide <3

Istio recently released v1.5; see https://istio.io/news/releases/1.5.x/announcing-1.5/

Why not use the CloudEvents SDK to parse events?

I'm curious why the translation example doesn't use the CloudEvents SDK?

Invalid Python syntax in app.py fro helloWorld example

from knative-tutorial/serving/python/app.py, it has an invalid character in the code when returning a string from hello_world function call

return f'Hello {target}\n'

and it should be

return 'Hello {target}\n'

Update tutorial for Knative v0.12

Add a Parallel sample

Add a HelloWorld eventing without Pub/Sub

Currently, HelloWorld eventing relies on Pub/Sub. Show a sample without Pub/Sub and change Pub/Sub sample to be Hello World to Pub/Sub or something similar.

install-knative-gcp & install-pubsub-serviceaccount to rely on init_control_plane_gke.sh

Add a buildpack sample

Add a buildpack sample that shows how to deploy code without Dockerfile

I was not able to reach my app (error 404)

curl --header "Host:http://cool-app.default.example.com" 34.x.x.x -v

I followed the exact steps in knative tutorial to create a cluster on GKE with istio and install knative, I am not able to reach my cool-app from out side of the cluster.

Can you please suggest if I am missing something?, seems like this problem is familiar among knative community. Thanks in advance

Add a complex delivery with replies example

Add a monitoring example

Remove Automatic Build sample from the tutorial

Inline builds are going away in Knative 0.7. That means Automatic Build sample is no longer relevant and should go away.

thorough workload identity tutorial setup of KNative-GCP

Hi Mete, can you provide a more thorough of setting up the knative-gcp installation with the focus on leveraging workload identity setup for the control plan.

Additionally the explicit data plane setup with workload identity is confusing as i don't get why it would be required to provide the spec.googleServiceAccount in the manifest.
https://github.com/google/knative-gcp/blob/master/docs/install/pubsub-service-account.md

** I did log an issue under the knative-gcp and Grace had mentioned this wasn't supported prior to 0.14.0 so i was eager to try when it was recently released. Hopefully you have better luck.

the annotated service account that would say run the data plane CloudPubSubSource for example should automagically be authorized and authenticated to use whatever google apis it's entitled to.

Add a broker based complex delivery example

Update Vision API sample to use storage events directly

Test and update for Knative v0.9

• Test the tutorial with Knative v0.9
• Update as needed

Update for Knative v0.14.0

install-knative-gcp script to rely on init_control_plane.sh

Update samples with .NET Core 3.0

permissions issue with Vision API

Hi Mete,

With Vision API, I get below error in pod logs instead of description. Is it related some permissions?

info: vision.Startup[0]
Storage url: gs://<STORAGE_BUCKET>/beach.jpg
fail: vision.Startup[0]
Something went wrong: Error opening file: gs://<STORAGE_BUCKET>/beach.jpg.
info: Microsoft.AspNetCore.Routing.EndpointMiddleware[1]
Executed endpoint '/ HTTP: POST'
info: Microsoft.AspNetCore.Hosting.Diagnostics[2]
Request finished in 908.7609ms 200

Update Tekton pipelines samples for the latest release v0.11.0-rc2

Update setup instructions for monitoring components

Add a private cluster-local sample

Add a sample for private cluster-local service

Update installation scripts for Knative v0.13.0

Test and update Python samples for Knative 0.10.0

Update eventing examples with Knative service sinks

Currently, eventing samples use Kubernetes deployment as sinks. We should also show Knative service as sinks.

I can not get the helloworld-python on.

I followed the doc, and went through this process.

Everything is OK and the pod can persist for sometime and will go away.
I am not sure if this is something wrong. But I found every is good. I think it is because not workload.

The hostname url is http://helloworld-python.default.example.com. I got this with cmd kubectl get ksvc helloworld-python --output=custom-columns=NAME:.metadata.name,URL:.status.url

but when I try to curl -H "Host: helloworld-python.default.example.com" http://$EXTERNAL_IP

it always complains that could not be resolved by DNS. I can not debug the cause.

Please help. Thanks.

Update Translation sample to use CloudEvents

Add scripts for setup

It'd be nice to add scripts for setup for the tutorial, similar to Mark's scripts: https://github.com/mchmarny/knative-demos/tree/master/setup

Update eventing samples for Knative v0.13.0

Fix python eventing samples for v0.9.0

Improve the Dockerfile for C# samples

The current Dockerfile for C# samples end up with images of 1.7GB. We should improve them to be leaner.

Update serving samples for Knative v0.13.0

Update event-display to log the full CloudEvent

Add a CloudStorageSource sample

Kaniko Build Template failed

knative 0.5.2
run command : kubectl apply -f https://raw.githubusercontent.com/knative/build-templates/master/kaniko/kaniko.yaml

response:
error: unable to recognize "https://raw.githubusercontent.com/knative/build-templates/master/kaniko/kaniko.yaml": no matches for kind "BuildTemplate" in version "build.knative.dev/v1alpha1"

how to fix it?
it's knative version is old?

Add an event reply sample

All links are broken

All your links are broken. Very frustrating to do some things and have to leave it because of this.

Add a complex delivery example

Add Knative CLI samples

Add a simple delivery example

Add a Event Registry sample

Add a CronJob event source sample

Investigate Knative Eventing samples with Knative Services

Knative Eventing samples do not work again with Knative Services as event sinks. Investigate what needs to be done and consider converting samples into Kubernetes Services instead to avoid issues going forward