Обсуждение: Problem:- createdb: could not connect to database postgres: could not connect to server: No such file or directory

.11-0etch1_i3 86.deb) ...
Selecting previously deselected package postgresql-8.1.
Unpacking postgresql-8.1 (from .../postgresql-8.1_8.1.11-0etch1_i386.deb) ...
Setting up postgresql-client-8.1 (8.1.11-0etch1) ...

Setting up postgresql-8.1 (8.1.11-0etch1) ...
Creating new cluster (configuration: /etc/postgresql/8.1/main, data: /var/lib/po stgresql/8.1/main)...
Moving configuration file /var/lib/postgresql/8.1/main/postgresql.conf to /etc/p ostgresql/8.1/main...
Moving configuration file /var/lib/postgresql/8.1/main/pg_hba.conf to /etc/postg resql/8.1/main...
Moving configuration file /var/lib/postgresql/8.1/main/pg_ident.conf to /etc/pos tgresql/8.1/main...
Warning: The socket directory for owners other than 'postgres'
defaults to /tmp. You might want to change the unix_socket_directory parameter
in postgresql.conf to a more secure directory.
Configuring postgresql.conf to use port 5432...
Starting PostgreSQL 8.1 database server: main.

localhost:/home/user#
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I created data folder again. But When I tried to create a test database, I couldn't. Here is the steps I followed:-
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localhost:/home/user# adduser postgres
adduser: The user `postgres' already exists.
localhost:/home/user# mkdir /var/lib/postgresql/data
localhost:/home/user# chown postgres /var/lib/postgresql/data
localhost:/home/user# su - postgres
postgres@localhost:~$ /usr/lib/postgresql/8.1/bin/initdb -D /var/lib/postgresql/data
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

The database cluster will be initialized with locale en_IN.
The default database encoding has accordingly been set to UTF8.

fixing permissions on existing directory /var/lib/postgresql/data ... ok
creating directory /var/lib/postgresql/data/global ... ok
creating directory /var/lib/postgresql/data/pg_xlog ... ok
creating directory /var/lib/postgresql/data/pg_xlog/archive_status ... ok
creating directory /var/lib/postgresql/data/pg_clog ... ok
creating directory /var/lib/postgresql/data/pg_subtrans ... ok
creating directory /var/lib/postgresql/data/pg_twophase ... ok
creating directory /var/lib/postgresql/data/pg_multixact/members ... ok
creating directory /var/lib/postgresql/data/pg_multixact/offsets ... ok
creating directory /var/lib/postgresql/data/base ... ok
creating directory /var/lib/postgresql/data/base/1 ... ok
creating directory /var/lib/postgresql/data/pg_tblspc ... ok
selecting default max_connections ... 100
selecting default shared_buffers ... 1000
creating configuration files ... ok
creating template1 database in /var/lib/postgresql/data/base/1 ... ok
initializing pg_authid ... ok
enabling unlimited row size for system tables ... ok
initializing dependencies ... ok
creating system views ... ok
loading pg_description ... ok
creating conversions ... ok
setting privileges on built-in objects ... ok
creating information schema ... ok
vacuuming database template1 ... ok
copying template1 to template0 ... ok
copying template1 to postgres ... ok

WARNING: enabling "trust" authentication for local connections
You can change this by editing pg_hba.conf or using the -A option the
next time you run initdb.

Success. You can now start the database server using:

    /usr/lib/postgresql/8.1/bin/postmaster -D /var/lib/postgresql/data
or
    /usr/lib/postgresql/8.1/bin/pg_ctl -D /var/lib/postgresql/data -l logfile start

postgres@localhost:~$ /usr/lib/postgresql/8.1/bin/pg_ctl -D /var/lib/postgresql/data -l logfile start
postmaster starting
postgres@localhost:~$ /usr/lib/postgresql/8.1/bin/createdb test
createdb: could not connect to database postgres: could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
postgres@localhost:~$
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Where is the problem??
The logfile in home folder of postgres user is as follows:-
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 LOG:  could not bind IPv4 socket: Address already in use
HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
WARNING:  could not create listen socket for "localhost"
FATAL:  could not create any TCP/IP sockets
    ----------------------------------------
How can I correct it??