psql: FATAL: Peer authentication failed for user “dev”

Question

when i create a new user, but it cannot login the database.
I do that like this:

postgres@Aspire:/home/XXX$ createuser dev
Shall the new role be a superu         


        

Answer 1

For people in the future seeing this, postgres is in the /usr/lib/postgresql/10/bin on my Ubuntu server.

I added it to the PATH in my .bashrc file, and add this line at the end

PATH=$PATH:/usr/lib/postgresql/10/bin

then on the command line

$> source ./.bashrc

I refreshed my bash environment. Now I can use postgres -D /wherever from any directory