WARNING: Open MPI failed to TCP connect to a peer MPI process. This should not happen.

[jiapei100]

......
--------------------------------------------------------------------------
WARNING: Open MPI failed to TCP connect to a peer MPI process.  This
should not happen.

Your Open MPI job may now fail.

  Local host: pi02
  PID:        24783
  Message:    connect() to 169.254.140.13:1026 failed
  Error:      Resource temporarily unavailable (11)
--------------------------------------------------------------------------
[pi01:28731] 3 more processes have sent help message help-mpi-btl-tcp.txt / dropped inbound connection
[pi01:28731] Set MCA parameter "orte_base_help_aggregate" to 0 to see all help / error messages
[pi01:28731] 3 more processes have sent help message help-mpi-btl-tcp.txt / client connect fail

My hostfile is:

$ cat ~/hostfile 
192.168.1.253   slots=4
192.168.1.251   slots=4
192.168.1.249   slots=4
192.168.1.247   slots=4

[Egbert-Azure]

have you been able to solve the problem? I'm getting the same error out of the sudden