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https://github.com/m4rcu5nl/docker-pdns-recursor-alpine
Docker image for PowerDNS-recursor 4.1.9 on Alpine 3.8
https://github.com/m4rcu5nl/docker-pdns-recursor-alpine
alpine-linux docker-image pdns-recursor
Last synced: about 1 month ago
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Docker image for PowerDNS-recursor 4.1.9 on Alpine 3.8
- Host: GitHub
- URL: https://github.com/m4rcu5nl/docker-pdns-recursor-alpine
- Owner: m4rcu5nl
- Created: 2017-08-31T19:43:56.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2019-05-17T01:51:09.000Z (over 5 years ago)
- Last Synced: 2024-08-04T08:06:49.126Z (3 months ago)
- Topics: alpine-linux, docker-image, pdns-recursor
- Language: Shell
- Homepage:
- Size: 34.2 KB
- Stars: 2
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Lightweight pdns-recursor Docker image
 [](https://travis-ci.org/m4rcu5nl/docker-pdns-recursor-alpine) [](https://github.com/m4rcu5nl/docker-pdns-recursor-alpine/issues)
Docker image for PowerDNS Recursor 4.1.x. Super lightweight thanks to the Alpine Linux 3.8 base image. Total image size for the current build is **27.2MB**
- - -
## Getting the image
You can either clone this repo and build the image yourself or pull it from Docker Hub. The `:latest` tag on Docker Hub is a daily automated build.
```bash
# Example command to build an image
sudo docker image build -t pdns-recursor .
# Example command to pull an image
sudo docker image pull m4rcu5/pdns-recursor:latest
```
- - -
## Using the image
#### Default configuration
The recursor will work out of the box as long as you query it from a private network. To create a container without any additional configuration simply run:
```bash
docker container run \
--detach \
--hostname resolver.local \
--name pdns-recursor \
--mount type=bind,src=/etc/localtime,dst=/etc/localtime,readonly=true \
m4rcu5/pdns-recursor:latest
```
Let's assume the container can be reached on `172.17.0.4`. You can now query it with dig for example:
```
dig +tcp @172.17.0.4 google.com
; <<>> DiG 9.10.3-P4-Ubuntu <<>> +tcp google.com @172.17.0.4
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55033
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;google.com. IN A
;; ANSWER SECTION:
google.com. 300 IN A 216.58.211.110
;; Query time: 37 msec
;; SERVER: 172.17.0.4#53(172.17.0.4)
;; WHEN: Thu Aug 31 23:35:44 CEST 2017
;; MSG SIZE rcvd: 55
```
#### Custom configuration
It is possible to overwrite default settings by defining them in custom `.conf` files in `/data/recursor-conf.d/`. As an example this repo contains a zone file for the localhost zone and a configuration file to tell the recursor it has authority for that zone. Let's assume this repo has been cloned to `/opt` of the container host resulting in something similar to this:
```
/opt
└── pdns-recursor
└── data
├── recursor-conf.d
│ └── auth-zones.conf
├── scripts
└── zones
└── localhost
```
Now this local folder can be mounted as a volume inside the container:
```bash
docker container run \
--detach \
--hostname resolver.local \
--name pdns-recursor \
--mount type=bind,src=/etc/localtime,dst=/etc/localtime,readonly=true \
--mount type=bind,src=/opt/pdns-recursor/data,dst=/data,readonly=true \
m4rcu5/pdns-recursor:latest
```
Now the recursor will look in `/data/zones/localhost` whenever it receives a query for that zone.
Let's say we also want the recursor to validate DNSSEC queries. This can be accomplished by creating a `.conf` file for it and restarting the container:
```bash
# Create the config file
echo 'dnssec=validate' > /opt/pdns-recursor/data/recursor-conf.d/dnssec.conf
# Restart the container
docker container restart pdns-recursor
```
A complete list of settings for the recursor can be found on [https://doc.powerdns.com/md/recursor/settings/](https://doc.powerdns.com/md/recursor/settings/)