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I think the combination of Cockroach and Kubernetes is going to be a game changer. Modern orchestration tools really are still struggling with single points of failure and Cockroach really shines there. The fact that both tools are maturing at around the same time is a real win for Cockroach. Additionally its use of certificate authentication just fits in with the rest of Kubernetes.

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How does Kubernetes help with failover?

It's distributed, with no single point of failure. Your machines or vms that manage the cluster (should be) separate from those running the containers.

Ideally you set up 3 master nodes, with distributed etcd cluster for state, and enough machines to run your services with replication.

All of which is not bad at all to get started with if you use something like Kops.

Some useful docs: https://kubernetes.io/docs/admin/high-availability/building/

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