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Example with Canary deployments for Argo Rollouts and Prometheus

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codefresh-contrib/argo-rollout-canary-sample-app

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This is an example Go application that exposes Prometheus metrics.It is compiled using Codefresh.

Graphana Dashboard

Original code modified fromhttps://gabrieltanner.org/blog/collecting-prometheus-metrics-in-golang

How to build

Run:

  • go build to get the executable OR
  • docker build . -t example-app to create a container image if you prefer docker instead or don't have access to a Go dev environment

How to run the application on its own

  • go run . OR
  • docker run -p 8080:8080 example-app

Then visithttp://localhost:8080 orhttp://localhost:8080/metrics

To use with Argo Rollouts

To install the controller

kubectl create namespace argo-rolloutskubectl apply -n argo-rollouts -f https://raw.githubusercontent.com/argoproj/argo-rollouts/stable/manifests/install.yaml

To create the first deployment

kubectl create ns canarykubectl apply -f ./canary-manual-approval -n canary

To monitor the status

kubectl argo rollouts get rollout golang-sample-app-deployment --watch -n canary

To create a new color

kubectl argo rollouts set image golang-sample-app-deployment golang-sample-app-container=kostiscodefresh/argo-rollouts-canary-sample-app:9c7732e -n canary

To promote the color

kubectl argo rollouts promote golang-sample-app-deployment -n canary

To reject or undo the deployment

kubectl argo rollouts abort canary-sample-app-deployment -n canarykubectl argo rollouts undo canary-sample-app-deployment -n canary

To get the IP and port of the preview service

kubectl get svc  rollout-canary-preview -n canary -o jsonpath='{.status.loadBalancer.ingress[0].ip}'kubectl get svc  rollout-canary-preview -n canary -o jsonpath='{.spec.ports[0].port}'

To use this project in Codefresh

There is also acodefresh.yaml for easy usage with theCodefresh CI/CD platform.

More details can be found inCodefresh documentation

You can also importgraphana/graphana-dashboard.json as a premade dashboard

Enjoy!

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Example with Canary deployments for Argo Rollouts and Prometheus

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