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K8s is just a standardized api for running "programs" on hardware, which is a really difficult problem it solves fairly well.

Is it complex? Yes, but so is the problem it's trying to solve. Is its complexity still nicer and easier to use than the previous generation of multimachine deployment systems? Also yes.

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Just as a quick aside, I tried Coolify, Dokploy, Dockge, and Komodo, and if you're trying to do a Heroku-style PaaS, Dokploy is really good. Hands down the best UX for delivering apps & databases. It's too bad about the licensing. (e.g. OIDC + audit logs behind a paid enterprise license.)

Coolify is full of features, but the UX suffers and they had a nasty breaking bug at one point (related to Traefik if you want to search it.) Dockge is just a simple interface into your running Docker containers and Komodo is a bit harder to understand/come up with a viable deployment model, and has no built-in support for things like databases.

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If you're open, love to get your thoughts on https://miren.dev. We've doing similar things, but leaning into the small team aspects of these systems, along with giving folks an optional cloud tie in to help with auth, etc.
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I use Cosmos Cloud on a free 24g oracle VM. Nice UI, solid system
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Cosmos Cloud looks neat! At a first glance from looking at the web page, it looks more focused on delivering a "personal cloud" or "1-click deploy apps."

Dokploy is more Heroku-styled: while you can deploy third-party apps (it's just Docker after all), it seems really geared towards and intended for you to be deploying your own apps that you developed, alongside a "managed" database (meaning, the DB is exposed in the UI, includes backup functionality, and can even be temporarily exposed publicly on the internet for debugging.)

Coolify feels a bit like a mix of the two deployment models, while Dockge is "bring your own deployment" and Komodo offers to replace Terraform/Ansible/docker-compose through its own declarative GitOps-style file-based config but lacks features like managed databases, or built-in subdomain provisioning.

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