Migration from Akka to Pekko

[iosyyy]

Cluster Bootstrap uses hostname with hyphens instead of IP (uses 10-121-129-17.default.pod.cluster.local instead of 10.121.129.17)

[pjfanning]

@iosyyy can you give a more detailed description?

[iosyyy]

When Pekko Cluster Bootstrap uses Kubernetes Discovery, it queries the Kubernetes API for endpoints (pods), and by default it resolves to the hostname of the pod. Kubernetes returns DNS-style names rather than raw IP addresses. However, this worked fine on Akka but not on Pekko.

Observed Error

Probing [http://10-121-129-19.default.pod.cluster.local:7626/bootstrap/seed-nodes] failed due to: Probing timeout of [http://10-121-129-19.default.pod.cluster.local:7626]

[pjfanning]

What version of Pekko? What version of Akka?
Pekko is a copy of Akka (from before they changed their license). If you use a newer version of Akka from after the license change then they might have extra changes that Pekko doesn't have. Pekko hasn't changed the cluster code much.
Are you using Pekko 1.1+?. One change in Pekko 1.1+ is that we upgraded to Netty 4 but Netty is not the default transport, Artery/Aeron is (and we haven't made big changes there).

[He-Pin]

He needs to retrieve the IP address from Kubernetes. Maybe use Pekko management.