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====== Dynamic DNS ======

FIXME We decided to just pay dyn.com for their services, but this info is still valid.

http://www.howtoforge.com/installing-powerdns-with-mysql-backend-and-poweradmin-on-centos-5.2

http://www.misdivision.com/blog/create-your-own-dynamic-dns-service-using-powerdns-and-mysql

https://www.poweradmin.org

http://www.tupa-dns.org/

http://gnudip2.sourceforge.net

Here we provide a dynamic DNS service using PowerDNS and MySQL.

You will also use two working name servers, presumably your own.

===== Install on CentOS 5 =====

Here we install the packages and set the MySQL root password.  Adjust as necessary:

<file>
yum install pdns pdns-backend-mysql mysql-server vim-enhanced

chkconfig mysqld on
chkconfig pdns on
service mysqld start
mysqladmin -u root password 'new-password'
mysqladmin -u root -h [your-server-fqdn] password 'new-password'
</file>

Now we log in to MySQL:

<file>
mysql -u root -p
</file>

Now, at the MySQL prompt, we configure MySQL permissions.

^MySQL User ID^Purpose^
|root|Master MySQL Administrator|
|powerdns|PowerDNS Database User|
|power_admin|PowerAdmin Database User (limited)|

Adjust as necessary:

<file>
CREATE DATABASE powerdns;

GRANT ALL ON powerdns.* TO 'powerdns'@'localhost' IDENTIFIED BY 'your_powerdns_password';
GRANT ALL ON powerdns.* TO 'powerdns'@'[your-server-fqdn]' IDENTIFIED BY 'your_powerdns_password';
GRANT SELECT, INSERT, UPDATE, DELETE ON powerdns.* TO 'power_admin'@'localhost' IDENTIFIED BY 'your_power_admin_password';
GRANT SELECT, INSERT, UPDATE, DELETE ON powerdns.* TO 'power_admin'@'[your-server-fqdn]' IDENTIFIED BY 'your_power_admin_password';
FLUSH PRIVILEGES;
</file>

Now we create the database:

<file>
USE powerdns;

CREATE TABLE domains (
id INT auto_increment,
name VARCHAR(255) NOT NULL,
master VARCHAR(128) DEFAULT NULL,
last_check INT DEFAULT NULL,
type VARCHAR(6) NOT NULL,
notified_serial INT DEFAULT NULL,
account VARCHAR(40) DEFAULT NULL,
primary key (id)
);

CREATE UNIQUE INDEX name_index ON domains(name);

CREATE TABLE records (
id INT auto_increment,
domain_id INT DEFAULT NULL,
name VARCHAR(255) DEFAULT NULL,
type VARCHAR(6) DEFAULT NULL,
content VARCHAR(255) DEFAULT NULL,
ttl INT DEFAULT NULL,
prio INT DEFAULT NULL,
change_date INT DEFAULT NULL,
primary key(id)
);

CREATE INDEX rec_name_index ON records(name);
CREATE INDEX nametype_index ON records(name,type);
CREATE INDEX domain_id ON records(domain_id);

CREATE TABLE supermasters (
ip VARCHAR(25) NOT NULL,
nameserver VARCHAR(255) NOT NULL,
account VARCHAR(40) DEFAULT NULL
);

quit;
</file>

===== Configure PowerDNS =====

<file>
vim /etc/pdns/pdns.conf
</file>

Add the following lines to 'Launch' section of pdns.conf:

<file>
#################################
# launch        Which backends to launch and order to query them in
#
# launch=
launch=gmysql
gmysql-host=127.0.0.1
gmysql-user=powerdns
gmysql-password=your_powerdns_password
gmysql-dbname=powerdns
</file>

Start PowerDNS:

<file>
service pdns start
</file>

===== Install PowerAdmin =====

https://www.poweradmin.org/trac/wiki/GettingPoweradmin

==== Command Line ====

<file>
yum install httpd php php-devel php-gd php-imap php-ldap php-mysql php-odbc php-pear php-xml php-xmlrpc php-mbstring php-mcrypt php-mhash gettext php-pear-DB php-pear-MDB2-Driver-mysql
</file>

Start web server:

<file>
chkconfig httpd on
/etc/init.d/httpd start
</file>

Get the latest PowerAdmin and install it:

<file>
wget https://github.com/downloads/poweradmin/poweradmin/poweradmin-2.1.6.tgz

tar xvfz poweradmin-2.1.6.tgz
mv poweradmin-2.1.6 /var/www/html/poweradmin
touch /var/www/html/poweradmin/inc/config.inc.php
chown -R apache:apache /var/www/html/poweradmin/
</file>

==== Using a Web Browser ====

Begin the web install using the FQDN or the server's IP address:

http://[your-server-fqdn]/poweradmin/install

^Installation Step^Action^
|Installation step 1|Choose your language|
|Installation step 2|Read then go to step 3|
|Installation step 3|Username: powerdns|
|                   |Password: your_powerdns_password|
|                   |Hostname: localhost|
|                   |Database: powerdns|
|                   |Poweradmin administrator password: your_powerdns_web_admin_password|
|Installation step 4|Username: power_admin|
|                   |Password: your_power_admin_password|
|                   |Hostmaster: Your DNS admin e-mail address with '@' changed to '.'|
|                   |Primary nameserver: ns1.yourdomain.com|
|                   |Secondary nameserver: ns2.yourdomain.com|
|Installation step 5|Skip this step because we already set it up|
|Installation step 6|Read and then go to step 7|
|Installation step 7|Read|

==== Finalize the Install ====

Back at the command line:

<file>
rm -rf /var/www/html/poweradmin/install
</file>

===== Using PowerDNS =====

http://[your-server-fqdn]/poweradmin

===== Troubleshooting =====

==== 403 Error on Install URL ====

<file>
touch /.autorelabel
reboot
</file>
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