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please i wanted to find out if it is possible to implement a blue-green deployment for my application on separate AKS clusters using nginx ingress controller. I have the current application (blue) running on one AKS cluster and i have a new AKS cluster (Green, with a new k8s version) where i want to migrate my workloads to. Is it possible to implement the blue-green deployment strategy between these 2 AKS clusters using nginx ingress controller? If so, please can someone give me a suggestion on how this can be implemented? Thank you

Rollson
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  • I am pretty sure you'll at the least need a service mesh for this. A service mesh like linkerd or istio can span multiple clusters, whereas nginx ingress is local to a single cluster. I would take a look at support for k8s b/g deployment tools such as [flagger](https://flagger.app/) or [argocd rollouts](https://argoproj.github.io/argo-rollouts/). – jordanm Aug 20 '22 at 16:09
  • you can check flagger https://docs.flagger.app/tutorials/linkerd-progressive-delivery – Adiii Aug 21 '22 at 09:37
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    why use two clusters when you can use two namespaces within same cluster? – YK1 Aug 28 '22 at 22:42
  • @YK1 One of the clusters is running an older version of k8s. Hence the reason for the new cluster with the new k8s version. I did not want to use the option of upgrading my control plane k8s version to the new k8s version and then upgrading the k8s version of the worker nodes – Rollson Sep 13 '22 at 13:06

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