RAC 12.2 
Cluster installation in graphical mode went OK except that we can have one ASM instance up only at at time (either one). When I try to start the second one, it remains started for about 2mn then crashes with the following messages in that instance alert.log:
ERROR: Possible Network configuration issues detected,
ERROR: See LMON and oraping logs for detail.
2020-01-10 19:00:44.931000 +01:00
Instance Critical Process (pid: 14, ospid: 4587932, LMON) died unexpectedly
PMON (ospid: 16056668): terminating the instance due to error 481
I found it's because HAIP is not started on the other node. But it won't start:
crsctl start res ora.cluster_interconnect.haip -init
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'machine1'
CRS-2674: Start of 'ora.cluster_interconnect.haip' on machine1 failed
CRS-2679: Attempting to clean 'ora.cluster_interconnect.haip' on machine1
CRS-2681: Clean of 'ora.cluster_interconnect.haip' on machine1 succeeded
CRS-4000: Command Start failed, or completed with errors.