Ceph stretch mode connect to local datacenter

[perrfect]

Hello.
I have a ceph cluster which works in stretch mode:
DC1:
node1 (osd, mon, mgr)
node2 (osd, mon)
node3 (osd, mds)

DC2:
node1 (osd, mon, mgr)
node2 (osd, mon)
node3 (osd, mds)

DC3:
node1 (tiebreaker mon)

Datacenters are distributions between different locations.
I use RBD on my clients as CSI plugin in nomad.
How can I set up my clients to connect to the local datacenter?
I don't need big traffic between datacenters only for replications, so my
client in DC1 should connect to ceph in DC1. But when something happened
with DC1 my clients in DC1 should still be working.
Is this possible at all?

[nixpanic]

This is (mostly) possible with topology aware provisioning, but that is only implemented for Kubernetes at the moment.