CODEWITHSUNDEEP
kubernetes
abhink
abhink

Reputation: 9116

Pop to Pod communication for pods within the same Deployment

I have a Kubernetes deployment that has 3 replicas. It starts 3 pods which are distributed across a given cluster. I would like to know how to reliably get one pod to contact another pod within the same ReplicaSet.

The deployment above is already wrapped up in a Kubernetes Service. But Services do not cover my use case. I need each instance of my container (each Pod) to start-up a local in memory cache and have these cache communicate/sync with other cache instances running on other Pods. This is how I see a simple distributed cache working on for my service. Pod to pod communication within the same cluster is allowed as per the Kubernetes Network Model but I cannot see a reliable way to address each a pod from another pod.

I believe I can use a StatefulSet, however, I don't want to lose the ClusterIP assigned to the service which is required by Ingress for load balancing.

Upvotes: 1

Views: 551

Answers (1)

Kun Li
Kun Li

Reputation: 2755

Ofcourse you can use statefulset, and ingress doesn't need ClusterIP that assigned to the service, since it uses the endpoints, so 'headless service' is ok.

Upvotes: 3

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