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azurenetwork-programmingkubernetesazure-service-fabricazure-aks

Subnets in kubernetes

I'm still experimenting with migrating my service fabric application to kubernetes. In service fabric I have two node types (effectively subnets), and for each service I configure which subnet it will be deployed to. I cannot see an equivalent option in the kubernetes yml file. Is this possible in kubernetes?

Solution

  • First of all, they are not effectively subnets. They could all be in the same subnet. But with AKS you have node pools. similarly to Service Fabric those could be in different subnets (inside the same vnet*, afaik). Then you would use nodeSelectors to assign pods to nodes on the specific node pool.

    Same principle would apply if you are creating kubernetes cluster yourself, you would need to label nodes and use nodeSelectors to target specific nodes for your deployments.