Not sure exactly what happened but Postgresql flooded all the available SSD
space and obviously crashed. It has written a lot of data in the pg_wal
folder. Most likely it was caused by replication. The postgresql instance
that crashed was a subscriber and publisher at the same time. Even so, it
was not a heavy write replication, I mean the data that needed to be
replicated was rarely updated. Has anyone else encountered such an issue?
Best!