How to change postgresql data directory

How to change postgresql data directory.

1. vim /etc/postgresql/8.2/main/postgresql.conf
2. set data directory path to the new directory path
3. Create new Server Certificate
   
1. openssl req -new -text -out server.req
2. openssl rsa -in privkey.pem -out server.key
3. rm privkey.pem
4. openssl req -x509 -in server.req -text -key server.key -out server.crt
5. chmod og-rwx server.key
6. chown postgres:postgres server.key
4. Stop and Restart Postgresql server
   

References:

1. http://developer.postgresql.org/pgdocs/postgres/ssl-tcp.html
2. http://www.linuxquestions.org/questions/linux-server-73/change-postgresql-data-directory-649911/
3. http://www.postgresql.org/docs/8.3/static/runtime-config-file-locations.html