153 lines
4.4 KiB
Markdown
153 lines
4.4 KiB
Markdown
---
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title: PowerDNS
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---
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[toc]
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## Installation
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For the autoriative server install this package
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`# apt install pdns-server`
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This is the PowerDNS resolver package
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`# apt install pdns-recursor`
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### Different Backends can be installed on Debian
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Mysql Backend
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`# apt install pdns-backend-mysql mariadb-server`
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## Configuration Authoritative Server
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Set the backend you chose in the `launch=` option of PowerDNS' configuration file.
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The config can be found under `/etc/powerdns/pdns.conf`
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For MySQL I chose `launch=gmysql`
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> A [list of backends can be found here](https://doc.powerdns.com/authoritative/backends/index.html)
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Add the following parameters below `launch=gmysql`
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```
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gmysql-host=127.0.0.1
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gmysql-socket=/run/mysqld/mysqld.sock
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gmysql-user=(user)
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gmysql-password=(password)
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gmysql-dbname=pdns
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# Add this for dnssec support
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gmysql-dnssec=yes
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```
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Prepare database
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`# mariadb -u root -p`
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`CREATE DATABASE pdns;`
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`GRANT ALL ON pdns.* TO 'pdns'@'localhost' IDENTIFIED BY '<password>';`
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Import the schema utilised by PowerDNS. This can be done with the user you just created
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`$ mysql -u pdns -p pdns < /usr/share/doc/pdns-backend-mysql/schema.mysql.sql`
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`# systemctl restart pdns`
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### Zones
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Create Zone and add a name server
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`# pdnsutil create-zone (domain) ns1.(domain)`
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Add "A"-Record. **Mind the (.) after the domain**
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"Name" is the hostname you wish to assign.
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`# pdnsutil add-record (domain). (name) A (ip address)`
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### Dynamic DNS
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`# apt install bind9utils`
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Generate key
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`# dnssec-keygen -a hmac-md5 -b 128 -n USER (keyname)`
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Edit the configuration file and change `dnsupdate=no` to `dnsupdate=yes` and set `allow-dnsupdate-from=` to empty.
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Allow updates from your DHCP server
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`# pdnsutil set-meta (domain) ALLOW-DNSUPDATE-FROM (dhcp server ip)`
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If you set up a reverse-zone, also allow that
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`# pdnsutil set-meta (reverse ip).in-addr.arpa ALLOW-DNSUPDATE-FROM (dhcp server ip)`
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Import the key
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`# pdnsutil import-tsig-key (keyname) hmac-md5 (key)`
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Enable for domain
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`# pdnsutil set-meta (domain) TSIG-ALLOW-DNSUPDATE (keyname)`
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And for reverse-zone
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`# pdnsutil set-meta (reverse ip).in-addr.arpa TSIG-ALLOW-DNSUPDATE (keyname)`
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You also have to configure the DHCP server to provide updates, see [the DHCP article](https://wiki.realstickman.net/en/linux/services/dhcp-server)
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#### Testing with nsupdate
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`# nsupdate -k Kdhcpdupdate.+157+12673.key`
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```
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> server 127.0.0.1 5300
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> zone testpdns
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> update add test.testpdns 3600 A 192.168.7.10
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> send
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```
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## Configuration Recursive Resolver
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The config file can be found under `/etc/powerdns/recursor.conf`
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In `/etc/powerdns/pdns.conf` set `local-address=127.0.0.1` and `local-port=5300` to allow the recursor to run on port 53
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In `/etc/powerdns/recursor.conf` set `forward-zones=(domain)=127.0.0.1:5300` to forward queries for that domain to the authoritative DNS
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Also set `local-address` and `allow-from`
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To bind to all interfaces, use `local-address=::,0.0.0.0`
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### Wipe Cache
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`# rec_control wipe-cache $`
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## DNSSEC
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### Authoritative Server
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> *TODO*
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> https://doc.powerdns.com/authoritative/dnssec/index.html
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### Recursor Server
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To fully enable DNSSEC, set `dnssec=process-no-validate` to `dnssec=validate`
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To allow a domain without DNSSEC, modify `/etc/powerdns/recursor.lua`
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Add `addNTA('(domain)')` to disable DNSSEC for the selected domain.
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Show domains with disabled DNSSEC
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`# rec_control get-ntas`
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> [DNSSEC Testing](https://wiki.debian.org/DNSSEC#Test_DNSSEC)
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## WebGUI
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### PowerDNS-Admin
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`# mkdir /etc/pda-data`
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`# chmod 777 -R /etc/pda-data`
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```
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# podman run -d \
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--name powerdns-admin \
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-e SECRET_KEY='q5dNwUVzbdn6gc7of6DvO0syIhTHVq1t' \
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-v /etc/pda-data:/data \
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--net=host \
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docker://ngoduykhanh/powerdns-admin:latest
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```
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#### Enabling API
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A few settings in `/etc/powerdns/pdns.conf` need to be changed.
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```
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api=yes
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api-key=(random key)
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webserver=yes
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```
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Following this, the API access can be configured in the webgui
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Now you should see all your configured Domains and be able to modify records
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#### Systemd Service
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`/etc/systemd/system/powerdns-admin.service`
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```
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[Unit]
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Description=Powerdns Admin Podman container
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[Service]
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Restart=always
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ExecStart=/usr/bin/podman start -a powerdns-admin
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ExecStop=/usr/bin/podman stop -t 10 powerdns-admin
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[Install]
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WantedBy=multi-user.target
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```
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`# systemctl daemon-reload`
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`# systemctl enable --now powerdns-admin`
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