I tried inputting “localhost” and “127.0.0.1” into pgadmin’s name field for setting up a new server, but got an error message that read “connection to the local server has been lost.”
Any help on what I should try next would be appreciated.
On Mon, 2020-02-24 at 22:25 -0500, Michael J. Cosentino wrote: > I am on a MacOS, (10.15.3), I am new to SQL in general, and I've downloaded both the Postgres.app and pgadmin 4 for the first time - trying to learn from a book from the library. > When I initially tried to open pgadmin, I got the error "The application server could not be contacted." > > I closed Postgres.app, and restarted pgadmin, and got past that initial error, and got pgadmin to load in my browser (Chrome), but there were no Servers in the object browser of pgadmin (the pane on > the left). > > I tried to connect a new server, and got the following error message: > "unable to connect to server. timeout expired" > > I tried inputting the server name for the server from Postgres.app, but that didn't seem to do anything. It looks like pgadmin is connecting to the correct port (5432), but I basically have no clue > what i'm doing wrong. > > attaching some screenshots of what i'm seeing in pg admin.
According to your screen shot, you used "PostgreSQL 12" as "host name/address", but that is not the name of the server.