[k8s] Identifying worker id from pods

[romilbhardwaj]

From user:

 there an easy way to tell which pod correspond to which worker? e.g. right now I have
NAME                                      READY   STATUS        RESTARTS      AGE
myclus-39f7-1e3c-worker        1/1     Running       0             10h
myclus-39f7-aaba-worker        1/1     Running       0             10h
myclus-39f7-b0f5-worker        1/1     Running       0             10h
myclus-39f7-d100-worker        1/1     Running       0             10h
myclus-39f7-d8ed-worker        1/1     Running       0             10h
myclus-39f7-d966-worker        1/1     Running       0             10h
myclus-39f7-head               1/1     Running       0             10h
I want to know which is worker 1 etc

We should look into naming the pod same as the worker id, and if that's not possible, patch a label on to the pod to identify worker id once the cluster is ready.

[romilbhardwaj]

Current workaround - use sky exec to get a mapping of worker id to pod name:

sky exec clus --num-nodes n -- 'echo worker$SKYPILOT_NODE_RANK: $HOSTNAME'
...
(worker2, rank=2, pid=1040, ip=10.244.0.38) worker2: clus-2ea4-c095-worker
(head, rank=0, pid=2370) worker0: clus-2ea4-head
(worker1, rank=1, pid=994, ip=10.244.0.37) worker1: clus-2ea4-92c1-worker