Install PostgreSQL 9.4 And phpPgAdmin On Ubuntu 15.10
================================================================================
### Introduction ###
[PostgreSQL][1] is a powerful, open-source object-relational database system. It runs under all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS, Solaris, Tru64), and Windows OS.
Here is what **Mark Shuttleworth**, the founder of **Ubuntu**, says about PostgreSQL.
> Postgres is a truly awesome database. When we started working on Launchpad I wasn’t sure if it would be up to the job. I was so wrong. It’s been robust, fast, and professional in every regard.
>
> — Mark Shuttleworth.
In this handy tutorial, let us see how to install PostgreSQL 9.4 on Ubuntu 15.10 server.
### Install PostgreSQL ###
PostgreSQL is available in the default repositories. So enter the following command from the Terminal to install it.
sudo apt-get install postgresql postgresql-contrib
If you’re looking for other versions, add the PostgreSQL repository, and install it as shown below.
The **PostgreSQL apt repository** supports LTS versions of Ubuntu (10.04, 12.04 and 14.04) on amd64 and i386 architectures as well as select non-LTS versions(14.10). While not fully supported, the packages often work on other non-LTS versions as well, by using the closest LTS version available.
#### On Ubuntu 14.10 systems: ####
Create the file **/etc/apt/sources.list.d/pgdg.list**;
sudo vi /etc/apt/sources.list.d/pgdg.list
Add a line for the repository:
deb http://apt.postgresql.org/pub/repos/apt/ utopic-pgdg main
**Note**: The above repository will only work on Ubuntu 14.10. It is not updated yet to Ubuntu 15.04 and 15.10.
**On Ubuntu 14.04**, add the following line:
deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main
**On Ubuntu 12.04**, add the following line:
deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main
Import the repository signing key:
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc
----------
sudo apt-key add -
Update the package lists:
sudo apt-get update
Then install the required version.
sudo apt-get install postgresql-9.4
### Accessing PostgreSQL command prompt ###
The default database name and database user are “**postgres**”. Switch to postgres user to perform postgresql related operations:
sudo -u postgres psql postgres
#### Sample Output: ####
psql (9.4.5)
Type "help" for help.
postgres=#
To exit from posgresql prompt, type **\q** in the **psql** prompt return back to the Terminal.
### Set “postgres” user password ###
Login to postgresql prompt,
sudo -u postgres psql postgres
.. and set postgres password with following command:
postgres=# \password postgres
Enter new password:
Enter it again:
postgres=# \q
To install PostgreSQL Adminpack, enter the command in postgresql prompt:
sudo -u postgres psql postgres
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postgres=# CREATE EXTENSION adminpack;
CREATE EXTENSION
Type **\q** in the **psql** prompt to exit from posgresql prompt, and return back to the Terminal.
### Create New User and Database ###
For example, let us create a new user called “**senthil**” with password “**ubuntu**”, and database called “**mydb**”.
sudo -u postgres createuser -D -A -P senthil
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sudo -u postgres createdb -O senthil mydb
### Delete Users and Databases ###
To delete the database, switch to postgres user:
sudo -u postgres psql postgres
Enter command:
$ drop database <database-name>
To delete a user, enter the following command:
$ drop user <user-name>
### Configure PostgreSQL-MD5 Authentication ###
**MD5 authentication** requires the client to supply an MD5-encrypted password for authentication. To do that, edit **/etc/postgresql/9.4/main/pg_hba.conf** file:
sudo vi /etc/postgresql/9.4/main/pg_hba.conf
Add or Modify the lines as shown below
[...]
# TYPE DATABASE USER 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
host all all 192.168.1.0/24 md5
# IPv6 local connections:
host all all ::1/128 md5
[...]
Here, 192.168.1.0/24 is my local network IP address. Replace this value with your own address.
Restart postgresql service to apply the changes:
sudo systemctl restart postgresql
Or,
sudo service postgresql restart
### Configure PostgreSQL-Configure TCP/IP ###
By default, TCP/IP connection is disabled, so that the users from another computers can’t access postgresql. To allow to connect users from another computers, Edit file **/etc/postgresql/9.4/main/postgresql.conf:**
sudo vi /etc/postgresql/9.4/main/postgresql.conf
Find the lines:
[...]
#listen_addresses = 'localhost'
[...]
#port = 5432
[...]
Uncomment both lines, and set the IP address of your postgresql server or set ‘*’ to listen from all clients as shown below. You should be careful to make postgreSQL to be accessible from all remote clients.
[...]
listen_addresses = '*'
[...]
port = 5432
[...]
Restart postgresql service to save changes:
sudo systemctl restart postgresql
Or,
sudo service postgresql restart
### Manage PostgreSQL with phpPgAdmin ###
[**phpPgAdmin**][2] is a web-based administration utility written in PHP for managing PosgreSQL.
phpPgAdmin is available in default repositories. So, Install phpPgAdmin using command:
sudo apt-get install phppgadmin
By default, you can access phppgadmin using **http://localhost/phppgadmin** from your local system’s web browser.
To access remote systems, do the following.
On Ubuntu 15.10 systems:
Edit file **/etc/apache2/conf-available/phppgadmin.conf**,
sudo vi /etc/apache2/conf-available/phppgadmin.conf
Find the line **Require local** and comment it by adding a **#** in front of the line.
#Require local
And add the following line:
allow from all
Save and exit the file.
Then, restart apache service.
sudo systemctl restart apache2
On Ubuntu 14.10 and previous versions:
Edit file **/etc/apache2/conf.d/phppgadmin**:
sudo nano /etc/apache2/conf.d/phppgadmin
Comment the following line:
[...]
#allow from 127.0.0.0/255.0.0.0 ::1/128
Uncomment the following line to make phppgadmin from all systems.
allow from all
Edit **/etc/apache2/apache2.conf**:
sudo vi /etc/apache2/apache2.conf
Add the following line:
Include /etc/apache2/conf.d/phppgadmin
Then, restart apache service.
sudo service apache2 restart
### Configure phpPgAdmin ###
Edit file **/etc/phppgadmin/config.inc.php**, and do the following changes. Most of these options are self-explanatory. Read them carefully to know why do you change these values.
sudo nano /etc/phppgadmin/config.inc.php
Find the following line:
$conf['servers'][0]['host'] = '';
Change it as shown below:
$conf['servers'][0]['host'] = 'localhost';
And find the line:
$conf['extra_login_security'] = true;
Change the value to **false**.
$conf['extra_login_security'] = false;
Find the line:
$conf['owned_only'] = false;
Set the value as **true**.
$conf['owned_only'] = true;
Save and close the file. Restart postgresql service and Apache services.
sudo systemctl restart postgresql
----------
sudo systemctl restart apache2
Or,
sudo service postgresql restart
sudo service apache2 restart
Now open your browser and navigate to **http://ip-address/phppgadmin**. You will see the following screen.
Login with users that you’ve created earlier. I already have created a user called “**senthil**” with password “**ubuntu**” before, so I log in with user “senthil”.
Now, you will be able to access the phppgadmin dashboard.
Log in with postgres user:
That’s it. Now you’ll able to create, delete and alter databases graphically using phppgadmin.
Cheers!
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via: http://www.unixmen.com/install-postgresql-9-4-and-phppgadmin-on-ubuntu-15-10/
作者：[SK][a]
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[1]:http://www.postgresql.org/
[2]:http://phppgadmin.sourceforge.net/doku.php