Postgresql – Upgrade PostgreSQL 9.1 to 9.3 and server no longer starts

I found a temporary solution to my problem. I edited the pg_hba.conf of the 9.3 server to say trust in the first two active lines. And after restarting (sudo service postgresql restart) I can connect to the server again using pgadmin. The downside is that the server might now not be password protected (I will open a separate question if I encounter any problems with that).

    # Database administrative login by Unix domain socket
    local   all             postgres                                trust

    # TYPE  DATABASE        USER            ADDRESS                 METHOD

    # "local" is for Unix domain socket connections only
    local   all             all                                     trust
    # IPv4 local connections:
    host    all             all             127.0.0.1/32            md5
    # IPv6 local connections:
    host    all             all             ::1/128                 md5
    # Allow replication connections from localhost, by a user with the
    # replication privilege.
    #local   replication     postgres                                peer
    #host    replication     postgres        127.0.0.1/32            md5
    #host    replication     postgres        ::1/128                 md5

Your client (Windows) is running on a different machine than your server (Ubuntu).

You cannot read the remote file system. Inspecting the logs only works if your client is on the same machine (or has access to the remote file system by way of some advanced trickery.)

To suppress the error message remove the log file from the display.
In the Server Status window press Ctrl-Alt-F
Or uncheck View -> Logfile.