Postgres SQL

From Blue-IT.org Wiki

Revision as of 16:13, 28 September 2007 by Apos (talk | contribs) (3. Edit the configuration files)

General

This guide is tested on ubuntu feisty with postgresql 8.2. It should work for former and future versions of both too.

General documentation you will find here: postgresql.org - interactive (!) manual with comments.

You should read this in advance to make shure the concepts behind postgresql configuration, startup and security (e.g. 'roles).

User Management

See postgresql-org - user management.

Ubuntu Feisty

Thanks to the article on hocuspok.us, it was very easy to set up postgresql-8.2 running on ubuntu.

Installation

Install postgresql

sudo apt-get install postgresql-8.2 postgresql-client-8.2

For administration we install pgadmin3

sudo apt-get install pgadmin3 pgadmin3-data

Set database admin account

Alter the password for the standard postgres user account (as root)

sudo su
postgres -c psql template1

Inside the database:

template1=# ALTER USER postgres WITH PASSWORD 'new_password';
template1=# \q

/etc/postgresql/8.2/main/postgresql.conf

Assure that the server is accessible on localhost

sudo gedit /etc/postgresql/8.2/main/postgresql.conf
listen_addresses = 'localhost'
password_encryption = on

/etc/postgresql/8.2/main/pg_hba.conf

Security settings

sudo gedit /etc/postgresql/8.2/main/pg_hba.conf
# Allow any user on the local system to connect to any database under
# any user name using Unix-domain sockets (the default for local
# connections).
#
# Database administrative login by UNIX sockets
local all all trust

# TYPE DATABASE USER CIDR-ADDRESS METHOD

# "local" is for Unix domain socket connections only
local all all md5

# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 md5

# Connections for all PCs on the subnet
#
# TYPE DATABASE USER IP-ADDRESS IP-MASK METHOD
# e.g. host all all 192.168.0.0/24 md5
# e.g. host all all 192.168.0.10 255.255.255.0 md5
host all all [ip address] [subnet mask] md5

Restart postgresql

sudo /etc/init.d/postgresql-8.2 restart

Initial registration with pgAdminIII

Working with pgAdminIII

ODBC, Postgres and Openoffice

According to PostgreSQL-Datenbanken in OpenOffice.org 2.0 unter Linux.

Ubuntu Gutsy - not working

Not possible until now --Apos 17:32, 28 September 2007 (CEST). See the end of this section.

  1. libodbcpsql.so is not installed
  2. Cannot compile unixodbc manually due to compile error

Don't read further.


1. Openoffice <-> ODBC

For connection between openoffice and odebc:

apt-cache search odbc | grep unix
   unixodbc - ODBC tools libraries
   unixodbc-bin - Graphical tools for ODBC management and browsing

apt-get install unixodbc unixodbc-bin

2. ODBC <-> Postgresql

For connection between the odbc layer and the database:

apt-cache search odbc
   odbc-postgresql - ODBC driver for PostgreSQL

apt-get install odbc-postgresql

Unfortunately there ist no libpostgresql.so library in this file. You have to build it by yourself. On your ubuntu installation you'll find the documentation

firefox file://usr/share/doc/odbc-postgresql/docs/unix-compilation.html

First install the unixodbc package:

apt-get install unixodbc 

To be able to compile the source package of the odbc driver you have to install the development package of the server (where #.# is you postgres version):

apt-get install postgresql-server-dev-#.#

Get the package from here.

tar xzvf psqlodbc-*.tar.gz
cd  psqlodbc-*
./configure

TODO ... ends with an error about not finding odbcinst ...

3. Edit the configuration files

Ubuntu installs its odbc libraries in /usr/lib/odbc

vim /etc/odbcinst.ini
[PostgreSQL]
Description = PostgreSQL ODBC Driver

TODO libodbcpsql.so does not exit after installation of unixodbc package.

Driver = /usr/lib/odbc/libodbcpsql.so 
Setup = /usr/lib/odbc/libodbcpsqlS.so

For system wide database location you have to edit the /etc/odbc.ini file.

There is a section Driver. You have to insert exactly the same name as defined in the odbcinst.ini between the braces, e.g. use PostgreSQL, if your odbcinst.ini is defined as [PostgreSQL]:

vim /etc/odbc.ini
[pgTestDBSource]
Description = PostgreSQL Test Database
Driver = PostgreSQL
Servername = localhost
Database = pgtest
Port = 5432
ReadOnly = No