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I want to connect to my local installation of PostgreSQL 9.1 using my machine user (who is vagrant). So, after reading PostgreSQL documentation, I thought I just needed to:

  1. Add username map in pg_ident.conf:

    vp vagrant postgres

  2. Using the map in pg_hba.conf

    local all all peer map=vp

But I'm getting the error

sql: FATAL:  Peer authentication failed for user "vagrant"

If I try to connect to my server using psql.

I guess I'm misunderstanding the PostgreSQL manual. But, how could I get what I need? (locally connect with the user vagrant like if it was the postgres user)

Many thanks in advance

  • That looks fine to me as written; where's that line in pg_hba.conf? Is there a prior line for local that might match the database/user combo before this one does? Did you reload/restart PostgreSQL? – Craig Ringer Aug 7 '14 at 0:53
  • Yes, there is a previous line in pg_hba.conf like: local postgres peer (meaning 'use peer authentication for local connection of postgres user, and I didn't add map) – Jorge Arévalo Aug 7 '14 at 8:37
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Per comments, there was a prior pg_hba.conf line that also matched the criteria, and didn't have a map entry.

It was being matched first, so the one with the map wasn't reached.

  • You're right! I've added the map=vp to the first entry of pg_hba.conf (local all postgres peer map=vp), and it works now. The user 'vagrant' is mapped with 'postgres', as desired. Thanks! – Jorge Arévalo Aug 8 '14 at 17:51

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