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My issue is that I have 40 dockerized containers set up behind a reverse proxy and, although I want to play with k8s to learn, I've already dumped so much time and effort into docker-compose that I'm cautious about migrating to a new system. Is the architecture substantially different?

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I went down that road a few years ago. Dockerized my app because I figured that was the first step. Then naturally docker-compose to bring the pieces together, right? No. Was upset that was not the next step to Kubernetifying an app. Use Kustomize instead. It's not that bad. Did take days or a few weekends but it requires very little maintenance now and its easy to spin up new apps.

Well it's distributed. I would say single machine vs distributed system is a really big difference. A lot problems and complexity.

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