PostgreSQL 10 on Linux - LC_COLLATE locale en_US.utf-8 not valid

Question

ERROR: invalid locale name: \"en_US.utf-8\"

Running Ubuntu server 18.04 Beta 2 with PostgreSQL 10.

In running a database creatio

Answer 1

I had the same error, I generated the new locale:

locale-gen en_US.UTF-8 

I verified with locale -a that it was in fact present, then I logged out just to make sure, but I was still getting the same error on the database creation.

Finally, I solved the error by simply restarting the postgresql server with:

sudo systemctl restart postgresql

After that, the database creation command was working!