how can I get ip of master node

[WilliamZhaoz]

when I get it via env variable AZ_BATCHAI_MPI_MASTER_NODE, I get follow error

File "src/scripts/submit_job/distributed.py", line 273, in set_environment_variables_for_nccl_backend
os.environ['MASTER_ADDR'] = os.environ['AZ_BATCHAI_MPI_MASTER_NODE']
File "/opt/conda/lib/python3.6/os.py", line 669, in getitem
raise KeyError(key) from None
KeyError: 'AZ_BATCHAI_MPI_MASTER_NODE'

[0mza987]

Did you find solution for this issue? Facing the same error here