In the parent task it was discussed that the ml-serve clusters should have labels like:
failure-domain.beta.kubernetes.io/region: {eqiad,codfw}
failure-domain.beta.kubernetes.io/zone: row-{a,b,c,d,e1,e2,....}The zone will be mixed between "old" per-row redundancy scheme (row-{a,b,c,d}) and new per-rack scheme of row E/F (row-{e1,e2,e3,..,f1,f2..}). Since we cannot add the labels via puppet, because in k8s 1.16 node labels can be added only upon the first run of the Kubelet, we'll have to add them manually and possibly add a comment in puppet to remember to properly add them when we'll migrate to the new k8s version (the labels are deprecated in the new version so we'll need something new of course).