Debian Tutorials » DNS http://www.debiantutorials.com Copy/Paste tutorials for Debian based Linux distros Tue, 27 Dec 2011 01:15:56 +0000 en hourly 1 http://wordpress.org/?v= Installing PowerDNS with MySql backend http://www.debiantutorials.com/installing-powerdns-with-mysql-backend/ http://www.debiantutorials.com/installing-powerdns-with-mysql-backend/#comments Tue, 27 Dec 2011 01:15:56 +0000 aip http://www.debiantutorials.com/?p=439 The PowerDNS Nameserver is a modern, advanced and high performance authoritative-only nameserver. It is written from scratch and conforms to all relevant DNS standards documents. Furthermore, PowerDNS interfaces with almost any database.

This tutorial has been tested and is working on Debian etch and lenny

1. Install the PowerDNS server and MySql backend using apt

apt-get install pdns-server pdns-backend-mysql

2. Create a new database (or use existing) and execute the following SQL queries to create the PowerDNS table structure:

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)
)type=InnoDB;
 
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)
)type=InnoDB;
 
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
);

3. Configure PowerDNS to use the MySql backend by adding this line into the configuration file (pico /etc/powerdns/pdns.conf)

launch=gmysql

4. Configure MySql login information for the PowerDNS server that can read from the tables you created earlier by adding lines similar to these (pico /etc/powerdns/pdns.d/pdns.local)

gmysql-host=127.0.0.1
gmysql-user=pdns
gmysql-password=password
gmysql-dbname=pdns

Replace the username, password and dbname with a valid login information and database name.

5. Restart PowerDNS

/etc/init.d/pdns restart

Now you should have a fully functional PowerDNS server installed. To manage the database (adding zones and records), consider using the Poweradmin web-based administration tool.

]]> http://www.debiantutorials.com/installing-powerdns-with-mysql-backend/feed/ 0 Installing PowerDNS as supermaster with slaves http://www.debiantutorials.com/installing-powerdns-as-supermaster-with-slaves/ http://www.debiantutorials.com/installing-powerdns-as-supermaster-with-slaves/#comments Sun, 11 Dec 2011 10:41:27 +0000 aip http://www.debiantutorials.com/?p=432 The PowerDNS Nameserver is a modern, advanced and high performance authoritative-only nameserver. It is written from scratch and conforms to all relevant DNS standards documents. Furthermore, PowerDNS interfaces with almost any database.

This tutorial has been tested to be working on Debian squeeze. It's assumed that you are installing one supermaster and one or more slaves that will sync with the master automatically.

On all servers

1. Install the PowerDNS server and MySql backend using apt

apt-get install pdns-server pdns-backend-mysql

2. Create a new database (or use existing) and execute the following SQL queries to create the PowerDNS table structure:

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)
)type=InnoDB;
 
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)
)type=InnoDB;
 
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
);

3. Configure PowerDNS to use the MySql backend by adding this line into the configuration file (pico /etc/powerdns/pdns.conf)

launch=gmysql

4. Configure MySql login information for the PowerDNS by adding lines similar to these (pico /etc/powerdns/pdns.d/pdns.local).

gmysql-host=127.0.0.1
gmysql-user=pdns
gmysql-password=password
gmysql-dbname=pdns

Replace the username, password and dbname with a valid login information and database name. Each DNS server in the cluster needs to have a dedicated local database.

On the master server

5. Allow zone transferes and enable master operation. (pico /etc/powerdns/pdns.conf)

allow-axfr-ips=10.0.0.2
disable-axfr=no
master=yes

6. Add a new zone

INSERT INTO domains (name, type) VALUES ('example.org', 'MASTER');
INSERT INTO records (domain_id, name, content, type, ttl, prio) VALUES (1, 'example.org', 'ns1.example.org hostmaster.example.org 1', 'SOA', 86400, NULL);
INSERT INTO records (domain_id, name, content, type, ttl, prio) VALUES (1, 'example.org', 'ns1.example.org', 'NS', 86400, NULL);
INSERT INTO records (domain_id, name, content, type, ttl, prio) VALUES (1, 'example.org', 'ns2.example.org', 'NS', 86400, NULL);
INSERT INTO records (domain_id, name, content, type, ttl, prio) VALUES (1, 'ns1.example.org', '10.0.0.1', 'A', 86400, NULL);
INSERT INTO records (domain_id, name, content, type, ttl, prio) VALUES (1, 'ns2.example.org', '10.0.0.2', 'A', 86400, NULL);

On the slaves

7. Enable slave operation (pico /etc/powerdns/pdns.conf)

slave=yes

8. Make the master server a supermaster for the slave. If supermaster is specified, all new zones will be added automatically to the slave when notified by the master.

INSERT INTO supermasters (ip, nameserver, account) VALUES ('10.0.0.1', 'ns2.example.org', '');

Assuming the master IP address is 10.0.0.1

On master and slaves

9. Restart PowerDNS

/etc/init.d/pdns restart

On the master

10. Trigger a notify

UPDATE records SET content = 'ns1.example.org hostmaster.example.org 2' WHERE type = 'SOA' AND name = 'example.org';

Increasing the serial will sync data from the master to the slave

]]> http://www.debiantutorials.com/installing-powerdns-as-supermaster-with-slaves/feed/ 0 Installing PowerDNS Recursor http://www.debiantutorials.com/installing-powerdns-recursor/ http://www.debiantutorials.com/installing-powerdns-recursor/#comments Mon, 14 Jun 2010 07:01:21 +0000 aip http://www.debiantutorials.net/?p=317 PowerDNS Recursor is a resolving DNS server, that runs as a separate process. The authoritative pdns_server can be configured to proxy recursive queries to the recursor, and optionally overlay authoritative zone data.

The Recursor is used by several of the largest Internet providers of the world, including AOL, Shaw Cable and Neuf Cegetel.

1. Install the pdns-recursor package

apt-get install pdns-recursor

2. Configure the server to listen to all interfaces and allow queries from the local network (pico /etc/powerdns/recursor.conf)

allow-from=192.168.1.0/24
local-address=0.0.0.0

Replace 192.168.1.0/24 with your local network or the network allowed to query the resolving NS server.

3. Restart the DNS server

/etc/init.d/pdns-recursor restart

]]> http://www.debiantutorials.com/installing-powerdns-recursor/feed/ 0 Installing PowerDNS on etch/lenny http://www.debiantutorials.com/installing-powerdns-on-eth-lenny/ http://www.debiantutorials.com/installing-powerdns-on-eth-lenny/#comments Sat, 16 May 2009 23:15:18 +0000 aip http://debiantutorials.net/?p=45 The PowerDNS Nameserver is a modern, advanced and high performance authoritative-only nameserver. It is written from scratch and conforms to all relevant DNS standards documents. Furthermore, PowerDNS interfaces with almost any database.

This tutorial has been tested and is working on Debian etch and lenny

1. Install the PowerDNS server and MySql backend using apt

apt-get install pdns-server pdns-backend-mysql

2. Create a new database (or use existing) and execute the following SQL queries to create the PowerDNS table structure:

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)
)type=InnoDB;
 
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)
)type=InnoDB;
 
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
);

3. Configure PowerDNS to use the MySql backend by adding this line into the configuration file (pico /etc/powerdns/pdns.conf)

launch=gmysql

4. Configure MySql login information for the PowerDNS server that can read from the tables you created earlier by adding lines similar to these (pico /etc/powerdns/pdns.d/pdns.local)

gmysql-host=127.0.0.1
gmysql-user=pdns
gmysql-password=password
gmysql-dbname=pdns

Replace the username, password and dbname with a valid login information and database name.

5. Restart PowerDNS

/etc/init.d/pdns restart

Now you should have a fully functional PowerDNS server installed. To manage the database (adding zones and records), consider using the Poweradmin web-based administration tool.

]]> http://www.debiantutorials.com/installing-powerdns-on-eth-lenny/feed/ 1 Monitoring PowerDNS with MRTG http://www.debiantutorials.com/monitoring-powerdns-with-mrtg/ http://www.debiantutorials.com/monitoring-powerdns-with-mrtg/#comments Sat, 30 Aug 2008 01:21:30 +0000 admin http://debiantutorials.net/monitoring-powerdns-with-mrtg/ Monitoring PowerDNS is easy with MRTG, just install these two packages and create a config file and you're good to go!

apt-get install libsnmp-session-perl mrtg

Add this to a config file, for example /etc/mrtg.cfg (pico /etc/mrtg.cfg)

Interval: 5
WorkDir: /var/www/mrtg
WriteExpires: yes
Options[_]: growright,nopercent
XSize[_]: 600
 
Target[udp-queries]: `/etc/init.d/pdns mrtg udp-queries udp-answers`
Options[udp-queries]: growright,nopercent,perminute
MaxBytes[udp-queries]: 600000
AbsMax[udp-queries]: 600000
Title[udp-queries]: Queries per minute
PageTop[udp-queries]: <h1>Queries per minute</h1>
WithPeak[udp-queries]: ymwd
YLegend[udp-queries]: queries/minute
ShortLegend[udp-queries]: q/m
LegendI[udp-queries]: udp-questions
LegendO[udp-queries]: udp-answers
 
Target[perc-failed]: `/etc/init.d/pdns mrtg udp-queries udp-answers`
Options[perc-failed]: growright,dorelpercent,perminute
MaxBytes[perc-failed]: 600000
AbsMax[perc-failed]: 600000
Title[perc-failed]: Queries per minute, with percentage success
PageTop[perc-failed]: <h1>Queries per minute, with percentage success</h1>
WithPeak[perc-failed]: ymwd
YLegend[perc-failed]: queries/minute
ShortLegend[perc-failed]: q/m
LegendI[perc-failed]: udp-questions
LegendO[perc-failed]: udp-answers
 
Target[packetcache-rate]: `/etc/init.d/pdns mrtg packetcache-hit udp-queries`
Options[packetcache-rate]: growright,dorelpercent,perminute
Title[packetcache-rate]: packetcache hitrate
MaxBytes[packetcache-rate]: 600000
AbsMax[packetcache-rate]: 600000
PageTop[packetcache-rate]: <h1>packetcache hitrate</h1>
WithPeak[packetcache-rate]: ymwd
YLegend[packetcache-rate]: queries/minute
ShortLegend[packetcache-rate]: q/m
LegendO[packetcache-rate]: total
LegendI[packetcache-rate]: hit
 
Target[packetcache-missrate]: `/etc/init.d/pdns mrtg packetcache-miss udp-queries`
Options[packetcache-missrate]: growright,dorelpercent,perminute
Title[packetcache-missrate]: packetcache MISSrate
MaxBytes[packetcache-missrate]: 600000
AbsMax[packetcache-missrate]: 600000
PageTop[packetcache-missrate]: <h1>packetcache MISSrate</h1>
WithPeak[packetcache-missrate]: ymwd
YLegend[packetcache-missrate]: queries/minute
ShortLegend[packetcache-missrate]: q/m
LegendO[packetcache-missrate]: total
LegendI[packetcache-missrate]: MISS
 
Target[latency]: `/etc/init.d/pdns mrtg latency`
Options[latency]: growright,nopercent,gauge
MaxBytes[latency]: 600000
AbsMax[latency]: 600000
Title[latency]: Query/answer latency
PageTop[latency]: <h1>Query/answer latency</h1>
WithPeak[latency]: ymwd
YLegend[latency]: usec
ShortLegend[latency]: usec
LegendO[latency]: latency
LegendI[latency]: latency
 
Target[recursing]: `/etc/init.d/pdns mrtg recursing-questions recursing-answers`
Options[recursing]: growright,nopercent,gauge
MaxBytes[recursing]: 600000
AbsMax[recursing]: 600000
Title[recursing]: Recursive questions/answers
PageTop[recursing]: <h1>Recursing questions/answers</h1>
WithPeak[recursing]: ymwd
YLegend[recursing]: queries/minute
ShortLegend[recursing]: q/m
LegendO[recursing]: recursing-questions
LegendI[recursing]: recursing-answers

Make mrtg create a new report every 5 minutes by adding the following line in crontab (type crontab -e):

0,5,10,15,20,25,30,35,40,45,50,55 * * * * env LANG=C /usr/bin/mrtg /etc/mrtg.cfg

Create a summary page showing all graphs:

indexmaker /etc/mrtg.cfg > /var/www/mrtg/index.html

If using the default mrtg/apache configuration you can access the graphs here: http://yourserver/mrtg

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