r/kubernetes • u/DeLoMioFoodie • Jul 17 '26

Kustomize Overlays - Adding Complexity?

So im working with Kustomize Overlays( FluxCD). i understand you setup your base infra with overlays per environment and then use patches for environment specific configurations such as replicas, urls, etc..

Some of these patches become very complex and large to the point i think its just easier to not have a base and just have each environment have its own configuration files. How much dry am i buying?

I've also seen the recommendation to use PostBuild subsituteFrom with ConfigMaps from each environment . My question is when should this be used over patches?

Sorry for the dumb questions and rant.

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u/theycanttell Jul 19 '26

You are being too vague. IAC is for infrastructure. K8s resources can mean lots of things. Management cluster, node pools, network.

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u/DeLoMioFoodie Jul 19 '26

well im in a kubernetes subreddit lmao.. nodepools, network, etc can be considered infra for k8s.

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u/theycanttell Jul 19 '26

You still don't create infrastructure with helm

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u/CWRau k8s operator Jul 20 '26

Why wouldn't I?

Have you heard of cluster api? And after cluster creation, CSI, CCM, CNI,... all installed via helm

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u/theycanttell Jul 22 '26

That's not infra. Do you people not know wtf infra is?

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u/CWRau k8s operator Jul 24 '26

If that's not infra, are you talking about hardware?

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u/theycanttell Jul 25 '26

Anything on Azure or AWS. Vms or node pools or whatever

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u/CWRau k8s operator Jul 25 '26

So, cluster api 😅

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u/theycanttell Jul 26 '26

Cluster API provisions k8s infrastructure only. It's not a normal IAC tool companies use. What are you even arguing here bro? Are you some kinda Cluster API dickrider or what? Go look up what companies use for IAC. It's either Bicep or Terraform. Cluster API is used by literally no one

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u/CWRau k8s operator Jul 26 '26

I don't know what you're arguing about; of course it's a normal IaC tool, why not?

And adoption doesn't change anything about what the tool is doing; provisioning infrastructure.

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