CODEWITHSUNDEEP
kubernetes
Gopinath Taget
Gopinath Taget

Reputation: 73

How can kubernetes pods discover each other?

I am trying to implement something like the etcd services that uses the consensus algorithm (https://raft.github.io/). In this case, multiple instances of the etcd services need to be aware of each other. For this to happen, if we have 3 pods of etcd instance in a replication controller, the pods need to be able to talk to each other (at least be able to know the IP of self and all the other pods).

Is there a way of achieving this in the replication controller or pod specs without having to use the kubernetes API in the pod container?

Upvotes: 6

Views: 2212

Answers (1)

Paul Morie
Paul Morie

Reputation: 15788

You can put a service in front of those pods by giving each pod some label (for example etcd-service=true), and making a kubernetes service with a selector that matches that label. Use the DNS add-on, and you will get a DNS A record for each endpoint in the service. You can read more in the docs here.

Upvotes: 4

Related Questions