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by hatred
3519 days ago
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The concept of custom controllers looks similar to what schedulers are in Mesos. It's nice to see the two communities taking a leaf out of each other's books e.g., Mesos would introduce experimental support for task groups (aka Pods) in 1.1. Disclaimer: I work at Mesosphere on Mesos. |
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But they work differently. The operator does not really “schedule” containers. It finishes the controlling logic by using Kubernetes APIs. For example, it uses native Kubernetes health checking, service discovery, deployment. It works completely on top of Kubernetes API, so no specialized scheduler, executor or proxy are needed comparing to https://github.com/mesosphere/etcd-mesos/blob/master/docs/ar....
The advantages of Mesos is exposing lower level APIs and resources to allow more control. The etcd operator we built does not really need that. Building this kind of application operator may be simpler on k8s than on native Mesos.
Disclaimer: I work at CoreOS on Kubernetes and etcd.