### Setup development environment

Source: https://github.com/powerdns/pdns/blob/master/pdns/keyroller/README.md

Commands to initialize a virtual environment and install project dependencies.

```bash
$ virtualenv .venv
$ source .venv/bin/activate
$ pip install -r requirements.txt
```

--------------------------------

### Setup Python Virtual Environment for generate-repo-files.py

Source: https://github.com/powerdns/pdns/blob/master/build-scripts/docker/repo-test/README.md

Steps to set up a Python virtual environment, activate it, install dependencies, and run the `generate-repo-files.py` script.

```bash
python3 -m venv venv
bash
source venv/bin/activate
pip install --upgrade pip
pip install -r requirements.txt
```

--------------------------------

### Example Usage of Backend Methods

Source: https://github.com/powerdns/pdns/blob/master/docs/appendices/backend-writers-guide.md

Illustrative code examples demonstrating how to use the `lookup()`, `get()`, and `getSOA()` methods when implementing a PowerDNS backend.

```APIDOC
## Example Usage of Backend Methods

### Description
These examples show how to interact with a PowerDNS backend implementation.

### 1. Performing a Lookup and Retrieving Records

```cpp
YourBackend yb;
// Perform a CNAME lookup for www.powerdns.com
yb.lookup(QType::CNAME, "www.powerdns.com");

DNSResourceRecord rr;
// Retrieve and print CNAME records
while(yb.get(rr)) {
  cout << "Found cname pointing to '" + rr.content + "'" << endl;
}
```

### 2. Retrieving SOA Record and Listing Zone Contents

```cpp
YourBackend yb;
SOAData sd;

// Get the SOA record for "powerdns.com"
if (!yb.getSOA("powerdns.com", UnknownDomainID, sd)) {
  // Handle case where the backend is not authoritative
  return RCode::NotAuth;
}

// List all records for the zone ID obtained from SOA data
yb.list(sd.domain_id);
DNSResourceRecord rr;
// Print zone contents
while (yb.get(rr)) {
  cout << rr.qname << "\t IN " << rr.qtype.getName() << "\t" << rr.content << endl;
}
```

### Error Handling

- Real errors during backend operations should be reported by throwing an exception.
```

--------------------------------

### Install powerdns-client using Setuptools

Source: https://github.com/powerdns/pdns/wiki/Python-API-Client

Install the powerdns-client package locally using Setuptools.

```sh
python setup.py install --user
```

--------------------------------

### Enable and Start Nginx Service

Source: https://github.com/powerdns/pdns/wiki/How-to-configure-SSL-for-the-PowerDNS-api-using-Nginx

Ensure the Nginx service is enabled to start on boot and then start the service. Check its status to confirm it is running.

```bash
sudo systemctl enable nginx
sudo systemctl start nginx
sudo systemctl status nginx
```

--------------------------------

### Lua Configuration Examples

Source: https://github.com/powerdns/pdns/blob/master/pdns/dnsdistdist/docs/reference/config.rst

Examples of setting server order and adding a server to a pool using Lua syntax in dnsdist.

```lua
getServer(0).order=12         -- set order of server 0 to 12
getServer(0):addPool("abuse") -- add this server to the abuse pool
```

--------------------------------

### Start Docker Build Environment

Source: https://github.com/powerdns/pdns/wiki/Downstream-updates:-Alpine-Linux

Start a Docker container and mount the cloned `aports` directory for building packages.

```bash
$ docker run -ti --rm -v $(pwd)/aports:/aports alpine:edge
```

--------------------------------

### Example Dependency with SHA256 Hashes

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/docs/requirements.txt

This section shows an example of how package dependencies are listed with their corresponding SHA256 hashes. These hashes ensure the integrity and exact version of each installed package.

```text
--hash=sha256:19e51f073cd3df251856a8a4189fbdf1de4012c3ebacfb1884f94f1eb406079f \
    --hash=sha256:1a7dd0b3ee80d90150e3495a3a13ac34dbcbfd4f012996a6a1d8900e91b5c0fb \
    --hash=sha256:1d8ba486450b14f3b1d63bc521d410ec7565e52f887b9fb671791886436a42f7 \
    --hash=sha256:2108ba5c1eca18030634489dc544844144ee36357f2f9f780b93e7ddbb44b5 \
    --hash=sha256:228ee9bae8bef5b1e97ec58302f80357c37199e0d0a99174e138d28e6957b9d9 \
    --hash=sha256:23ace664830ee0bfe014a0c7bc248b1f7f25ed7ad103852c317624a1083af462 \
    --hash=sha256:2412e734dcb48da14d4e4006b82b46b74f2518b8a26ee7e58c6844a6cd6d03c4 \
    --hash=sha256:29c61fc04a3d840155ff08e475a04809278972fe6aef51e2720554e96367e34b \
    --hash=sha256:2f84c03c8607173d16b5a854ec68a2f9079ae03237a54fb506d13af47e1d018d \
    --hash=sha256:3009f12e4e90b7f88b4f9adb1b0c4a3d58fe7820f3238c190047209d148026df \
    --hash=sha256:3245406455a5d98187ec35530fd772b1d799b26667980872c8d4614991e2c4a2 \
    --hash=sha256:3447661d99f75a3683a4cf5c87da72f2161964611864dbbeac7fbb118bb4bfc0 \
    --hash=sha256:372429a130e469c9cd698925ce5fc50940b7a1336b0d82038e63d5bbc4edc519 \
    --hash=sha256:395aebd9183f9d112f569aeb5b2214d1a10a33bec8456447f7fbdfa51d38d4cd \
    --hash=sha256:3a233125ac121aa3ffba9a2b59edfc4a985a76092dc8279586ab4b71390875e7 \
    --hash=sha256:3be77f45df024d789a672ae34f8b06fb346c4f9f46ea714956660ea4862e89ac \
    --hash=sha256:3bf92c5d0e00fefaab325a4d27828fe6b6e2a21848686b5b60d2d9eeb09d76c6 \
    --hash=sha256:3ecbc122d18468d06ca279dc26a8c2e2d5acb10943bb35e36ae92096dc3b5565 \
    --hash=sha256:3fb702cd90b0446a3a1c5e470bfa0dd23c0233b676a9099ddcc964fa6ca13898 \
    --hash=sha256:428e04521a40150c85216fc8b85e8d39fece235a9cf5e383761238c7fa9b96fb \
    --hash=sha256:432c179df7874eeb73307aad2df0755e1ae0efa61ff0ea89b93e194411ae3928 \
    --hash=sha256:4a05d69cba51d852c5c3e92758653245a50c0b646ced0cf05bd793ed592839d6 \
    --hash=sha256:4c63ebc82684aa89d9a3bcbd13d515b3be44250dc68dd3bd81526c1cb31286c3 \
    --hash=sha256:4fc73cb559bdb54b1134a706a2802a4cddd27a0633f5abb7e53056268751ac6a \
    --hash=sha256:4fcbe087dbc2068af7eda3aa87634eba216dbda64d1ae73c8684b621d33f6596 \
    --hash=sha256:56cb4851bcaf3d117eddcef4fe66afd750a50274b0da8e22be256d10e5611987 \
    --hash=sha256:5855698a4856556d86e8e6cd8434bc3ac0314ee8e12089ae0e143f64c6256e4e \
    --hash=sha256:5a4330cdbc57162e4b3aa303f588ba752257694c9c9be3e7ebb11b4aca659b5d \
    --hash=sha256:5b712b53160b79a5850310b912a5ef8e57e56947c8ad690c227f5c9d7e561712 \
    --hash=sha256:5d5902252db0d3cedf8d4a1bc68f70eeb430f7e4c7104c8c476753519b423008 \
    --hash=sha256:617d7e2ca7dcb8c5cf6bcb8c59b8832c94b36196bbf1cbd1bfb56ed341905edd \
    --hash=sha256:62f875393d7f270851f20523dd2e29f082bcc82292d66db2b64ea71f64b6e1c1 \
    --hash=sha256:633147d34cf4550417f12e2b1a0383973bdf5cdfde212cb09e9a581cf10820be \
    --hash=sha256:66ce7632c22d837c95301830e111ad0128a32b8207533b60896a96c4915192ea \
    --hash=sha256:6b3ace8194b0e5204818c92802dcdca7fc6d88aabbb799d7c795540d9cd6d292 \
    --hash=sha256:6f2eeda33a839975441c86a4119e1383c50b47faf0cbb5176985565c6bb02c33 \
    --hash=sha256:7027560ee92211647d0d34e3f7cd6f50da56399d26a9c8ad0da286d3869a53f3 \
    --hash=sha256:7283d57845ecf5a163403eb0702dfc220cc4fbdd18919cb5ccea4f95ee1cdab4 \
    --hash=sha256:7a5f930472650a82629163023e630d160863fce524c616f4e5186e5de9d9a49b \
    --hash=sha256:7bfb192b3f4b9e8a89b6277b6ce787564f62cfd272055f6e685726b111dc7826 \
    --hash=sha256:811ff8e9c313ab425368bcbb36e5c4ebd7108c2bbf4e4089cfbb0b01eff63fac \
    --hash=sha256:8233f2947cf85404441fd7e0085f53b10c93e0ee78611099b5c7237e36aacbf7 \
    --hash=sha256:82cf5301172168103724d49a1444d3378cb20cdee30b116a1bd6031236298a5d \
    --hash=sha256:8358a950c8909158e3df31538a7e4edc2d7265a7c54b47f0864d9e5bae9dcebf \
    --hash=sha256:85bb3611ff1802f3ee7fdd7dbff26b56f343fb432d57a4728fdd49b6ef35e2f4 \
    --hash=sha256:86e1a4418c6cd97d60c95c71164158eaf7324fae7b0923264016baa993eba6fc \
    --hash=sha256:8b9bab013d1c7a79d3501ff86d0bc9c31bf587db4551677b96bec07df78c6b15 \
    --hash=sha256:8c5dac79fa1614d1e06ca695109c6105923bd9c7d1d6c918d4e637b7e6b32fd3 \
    --hash=sha256:8d0820e8192167f80d88d64038e609c31452eeca865b4e1d9950a27a4609b00b \
    --hash=sha256:8daafc69c93ee8a0204506a3b6b30f586ef54028f52aeeeb5c4cfc5184fd5914 \
    --hash=sha256:9037063db01f09b09e237c282b6792bd4da634b5402c4e7f0c61effed7701a04 \
    --hash=sha256:905a0ed8ea6f2d61c1738835f99b699348d7857379083e5fc497fa0c967a407c \
    --hash=sha256:90884113d8b48f760e9587002789ddd741e76ab9f89518cd1e43b1f1a52ec44b \
    --hash=sha256:91a06d2e259ecfbd8c901d70c3c507900458498142b3026a296b7de4d1322cc9 \
    --hash=sha256:926c9541b14b12b1681dca8a0b75feb510b06c6341b70a8e500c2fdcff837cce \
    --hash=sha256:9401557acd873c3a7f3eb9383edef8ac4968f9510e340f4808d427e75667e7b4 \
    --hash=sha256:9551187363ffc0de2a00b2e47c25aeaeb1020b69b668762966df15fc5659dd5a \
    --hash=sha256:962ccbab7b642487b1d8b7df90ef677e03134cf1fd8880bf698649b22a69371f
```

--------------------------------

### Setup dnsdist Build with Meson

Source: https://github.com/powerdns/pdns/blob/master/pdns/dnsdistdist/README.md

Initial setup for building dnsdist using Meson. This command creates the build directory.

```bash
meson setup build
```

--------------------------------

### Example: List zones of a view

Source: https://github.com/powerdns/pdns/blob/master/docs/http-api/views.md

Shows an example of how to retrieve all zones within a specific view, including authentication.

```http
GET /api/v1/servers/localhost/views/trusted HTTP/1.1
X-API-Key: secret
```

```http
HTTP/1.1 200 OK
Content-Type: application/json

{"zones":["example.com..trusted","otherdomain.com..untrusted"]}
```

--------------------------------

### Example Conversion of Recursor Configuration

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/docs/appendices/yamlconversion.rst

This example demonstrates the conversion process by showing the output of 'rec_control show-yaml' after navigating to the 'example' directory and specifying 'recursor.conf'. It highlights the '!override' tag and how '+= ' extends settings.

```sh
cd example
rec_control show-yaml recursor.conf
```

--------------------------------

### Activate Domain Key (JSON/RPC Example)

Source: https://github.com/powerdns/pdns/blob/master/docs/backends/remote.md

Example of a JSON/RPC call to activate a domain key. Requires the domain name and key ID.

```json
{"method":"activatedomainkey","parameters":{"name":"example.com","id":1}}
```

```json
{"result":true}
```

--------------------------------

### Install PowerDNS Recursor on FreeBSD

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/docs/getting-started.rst

Install via the ports system using pkg or compile from source.

```bash
pkg install pdns-recursor
```

```bash
cd /usr/ports/dns/powerdns-recursor/ && make install clean
```

--------------------------------

### Get Domain Keys (HTTP/RPC Example)

Source: https://github.com/powerdns/pdns/blob/master/docs/backends/remote.md

Example of an HTTP GET request to retrieve domain keys for a specific domain and zone. The response includes key details.

```http
GET /dnsapi/getdomainkeys/example.com/0 HTTP/1.1
```

```http
HTTP/1.1 200 OK
Content-Type: text/javascript; charset=utf-8

{"result":[{"id":1,"flags":256,"active":true,"published":true,"content":"Private-key-format: v1.2
Algorithm: 8 (RSASHA256)
Modulus: r+vmQll38ndQqNSCx9eqRBUbSOLcH4PZFX824sGhY2NSQChqt1G4ZfndzRwgjXMUwiE7GkkqU2Vbt/g4iP67V/+MYecMV9YHkCRnEzb47nBXvs9JCf8AHMCnma567GQjPECh4HevPE9wmcOfpy/u7UN1oHKSKRWuZJadUwcjbp8=
PublicExponent: AQAB
PrivateExponent: CYC93UtVnOM6wrFJZ+qA9+Yx+p5yk0CSi0Q7c+/6EVMuABQ5gNyTuu0j65lU3X81bwUk2wHPx6smfgoVDRAW5jjO4jgIFV6nE4inzk5YQKycQSL8YG3Nm9GciLFya1KUXs81sHsQpkvK7MNaSbvkaHZQ6iv16bZ4t73Wascwa/E=
Prime1: 6a165cIC0nNsGlTW/s2jRu7idq5+U203iE1HzSIddmWgx5KIKE/s3I+pwfmXYRUmq+4H9ASd/Yot1lSYW98szw==
Prime2: wLoCPKxxnuxDx6/9IKOYz8t9ZNLY74iCeQ85koqvTctkFmB9jpOUHTU9BhecaFY2euP9CuHV7z3PLtCoO8s1MQ==
Exponent1: CuzJaiR/7UboLvL4ekEy+QYCIHpX/Z6FkiHK0ZRevEJUGgCHzRqvgEBXN3Jr2WYbwL4IMShmGoxzSCn8VY9BkQ==
Exponent2: LDR9/tyu0vzuLwc20B22FzNdd5rFF2wAQTQ0yF/3Baj5NAi9w84l0u07KgKQZX4g0N8qUyypnU5YDyzc6ZoagQ==
Coefficient: 6S0vhIQITWzqfQSLj+wwRzs6qCvJckHb1+SD1XpwYjSgMTEUlZhf96m8WiaE1/fIt4Zl2PC3fF7YIBoFLln22w=="}]}
```

--------------------------------

### Example Dependency with SHA256 Hashes

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/docs/requirements.txt

This section shows an example of how Python package dependencies are listed with their corresponding SHA256 hashes. These hashes are used to verify the integrity of the installed packages.

```text
--hash=sha256:8213afbe8a3a906fb9acb2014423fe3359ee783d0bf90995f70623a3217bfa6c \
    --hash=sha256:83bcf894486c9d78dd290d3c0124ff6dd8875d3025e2090a8ec49fcc37c55fdd \
    --hash=sha256:85264a90ff4c05c1568dd65f5921c837614b67c60358fb4c17df3b7f2e90690a \
    --hash=sha256:88647f43a73c4e01be19b04ceef0c8d3a1958153604d13c773becd8016f2a0cf \
    --hash=sha256:8895840ac4809e5f60c88fd07617cd71326e73d6e5a8aa783c5c0f7c24985de2 \
    --hash=sha256:8ba264fa49be666cd9cc56bf34ec7002fb3d27a4aee5bcb4d43d0d18feb1bb6f \
    --hash=sha256:8bff7073db3899158fff55ebf57b113a67030af26f80a18978f9f0aa60250ddf \
    --hash=sha256:8c43a8a973270fd173bf48cdf80bbe66312421cba68d40845034f174f2389049 \
    --hash=sha256:90bd6630002a1c7f09e7843dd79f0d24f3d2897cc25a753480917865d14f15b3 \
    --hash=sha256:90f628283be835db980c941767d41c9a27b5239e54ba0a9c1335247e82406964 \
    --hash=sha256:94068eb3ae6d43f5a786b7db96a406a34e6d5c24489feef32fd6e8946ea7b291 \
    --hash=sha256:980450826cf22e133c57e0835070bdd0dd3f73b9b708c3ce223def2cb9469e14 \
    --hash=sha256:99ab6ba7bfa2cb0f96a04e3652355bf04e3f51aceb1e943b8541dab7ba4828cc \
    --hash=sha256:9af8905b8f854990e40d5206aa5ac58d9b0fe0b7f351ff2bb086c20f6c8c6a47 \
    --hash=sha256:9baffb505aff33acc69b422a19f77806680f3c8632227d79f48de8a810d1c2c5 \
    --hash=sha256:9cdddb6c1207d284d94fd1530adf57fbd797fe7c4b8704ba85f49414f2557e7d \
    --hash=sha256:9e25b7088f9ccbfc0dfcaa52bf969300ca229e10ecf758974ebcbb080a4b37bb \
    --hash=sha256:a04df86b3f0fade39ec8fd0e0aab089b1da9fbd2b48df778a57ef96f5e7d38df \
    --hash=sha256:a05fa4f41f37ec97c9c260441a940450a192f78d774d2b097eee1379f1e1246a \
    --hash=sha256:a2999883eedf72fdfb7520b92c7d4ec2572a71ff40239377aa604cc529eecafc \
    --hash=sha256:aad1bff7f666b9598e573815affd666aac6a13a585dde336f843e33350c7fadc \
    --hash=sha256:abe76bcdba31e576cb83eeb8797aa0d882b738fef6dc65d0601fc753806a5b46 \
    --hash=sha256:ad3773236e95f7f33991eb125224b7da66f206504d032a253a02da7e134519fb \
    --hash=sha256:af03e34e860047bc7a352b842856fcf78798fbb81132cc98bd2f907ab4eb9cd2 \
    --hash=sha256:b1b964e3ab599e718dc46c018d104b1ebc007cbc6567d827c94a687fca56d77e \
    --hash=sha256:b1be5c35683684d5331b93600c210e8367c254683d8a6df6bd21bd2da3a334fb \
    --hash=sha256:b317c87a13f769a4e787819bd508aaa5d69aa09b0880de9af6d3a8a54571cdec \
    --hash=sha256:b3cc20c0d800af78fd0fac68086e28c1856cec51ea528bb81ea851aa40d39325 \
    --hash=sha256:b4e4bc98639ec915f512fde3aa7a95e0041d95d9c3cc86eea841fa63cb1e8600 \
    --hash=sha256:b5c30f3f04eef4fbd362226a6f31d7c8895ca4fbb6e0b790f6890a98d8da8559 \
    --hash=sha256:b5f077b44a4f7808520f66dae234988d867deb9aed9be5da057ce9ba831b2a41 \
    --hash=sha256:b6825cc329b290e93c5f6a9be2393118a763f6ccf6abd83704e0c102ca583644 \
    --hash=sha256:b8d2f912928d426e8cfa396f7f3f8d29a59e6689c86dcca3c420730c1096322b \
    --hash=sha256:b95d5e11fc712b752081183a55a244c03cd00570489edd7014d8899f8ceb8162 \
    --hash=sha256:b9a6528956191c48c52294a592dbd4a8386d7048bdb25c0efcb6b966466c6d83 \
    --hash=sha256:ba05adbf15d994c38ec0b7ab32e858e5110c21e9009a00a86545fd220f84e038 \
    --hash=sha256:c0f920015df2a504bebaba6d4c31ccf3fcf942f92655c086da30b671aad19aa6 \
    --hash=sha256:c396c1304de421050b3681ea70f371874b54d41b0151e96109758144c231e30b \
    --hash=sha256:c39f5b67a8a2e67179ada2a954227d670fe65fa9098457f698f56ddf248709b3 \
    --hash=sha256:c3df104083952a0e0c6f10de33e440eabe98fb6317d23e1a58c68f6df08d01b9 \
    --hash=sha256:c74005a7bb87752acf351c93897ec63ad77a07a0da7ecad9c050e32e7286ba34 \
    --hash=sha256:c93c629be4636cf54337bd5f06c104d55e42ced54d681f6fe21ae510a65116f6 \
    --hash=sha256:ca653c6546386227cd9800d1bef6a348099acf8db4250341da6d90f663d6dfcb \
    --hash=sha256:cacedb7a6e167680acba45ad5716e89067d225dc80da0d7040cae8c81d4572fa \
    --hash=sha256:cc68e231a77a5f0d774ae278a1f8e55c0456501820847c1e4efb3829f3441df6 \
    --hash=sha256:ce87129d9f2c14fa6c4a8601fb80eb4488c80d38a20cd13758ef11123e14995d \
    --hash=sha256:cea68bcd53467561ae2f96a6bdad1544299ba97b5b0ddcd5ac3d376e5c781c24 \
    --hash=sha256:cef8ac28d26f4dda3533060c20fbf80a325458fa9fd23ea72a73cdfa8e978838 \
    --hash=sha256:d0efbe45632665e53e3db8fe1e5692db58fc5cb9bab4459d570b83efefe11164 \
    --hash=sha256:d3858b908218ee108d0bbfb2095ccc237648053c9bf98affad7cb079acaf1d97 \
    --hash=sha256:de42116e69cb53b911cc34aee5ab98f36c597b822545045d49e938818b99e5e4 \
    --hash=sha256:df1d2a1996755b24b9ecee92cb4d36c28f86f464a6a173349c26bab41e94b8c2 \
    --hash=sha256:e07be2a9d7122bd6e82dea89814ef8dc893feb1aae97fec1630f3263bbb30e55 \
    --hash=sha256:e0b360f316d966b048b085857630b3cc51f3db2f07b06f440eac8f695374d1e3 \
    --hash=sha256:e10464d17df3b582745c25cec695cb9558bca2cb6ddb631aee1787fc72c767b2 \
    --hash=sha256:e3a8ae58895ac107ed934a6bf51e5846f95c53b9b940c2c6d310838fd5846358 \
    --hash=sha256:e4abbf391a70be864920858bf360f4fb380577c9a0f732438a1996726e2c195b \
    --hash=sha256:eaaea962c68cdc68d4a533ba985ab8e9484277910bbfaa2ab3ef7732667bfed8
```

--------------------------------

### Retrieve Collection List Response

Source: https://github.com/powerdns/pdns/blob/master/docs/common/api/dataformat.rst

Example response format for a GET request on a collection.

```json
[
  {
    "type": "AType",
    "id": "anid",
    "url": "/atype/anid",
    "a_field": "a_value"
  },
  {
    "type": "AType",
    "id": "anotherid",
    "url": "/atype/anotherid",
    "a_field": "another_value"
  }
]
```

--------------------------------

### Example: List all views

Source: https://github.com/powerdns/pdns/blob/master/docs/http-api/views.md

Demonstrates a practical request to list all views on a server, including authentication headers.

```http
GET /api/v1/servers/localhost/views HTTP/1.1
X-API-Key: secret
```

```http
HTTP/1.1 200 OK
Content-Type: application/json

{"views":["trusted","untrusted"]}
```

--------------------------------

### Example YAML Settings Configuration

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/rec-rust-lib/README.md

A sample YAML file demonstrating the structure of settings, including sections for DNSSEC, logging, and webservice configuration.

```yaml
dnssec:
  log_bogus: true
incoming:
  listen:
  - 0.0.0.0:5301
  - '[::]:5301'
logging:
  common_errors: true
  disable_syslog: true
  loglevel: 6
recursor:
  daemon: false
  extended_resolution_errors: true
  socket_dir: /tmp/rec
  threads: 4
webservice:
  address: 127.0.0.1
  allow_from:
  - 0.0.0.0/0
  api_key: secret
  port: 8083
  webserver: true
```

--------------------------------

### BIND Configuration for TSIG Interoperability

Source: https://github.com/powerdns/pdns/blob/master/docs/tsig.md

Example BIND configuration equivalent to the PowerDNS TSIG setup for outbound AXFR.

```none
key test. {
        algorithm hmac-md5;
        secret "kp4/24gyYsEzbuTVJRUMoqGFmN3LYgVDzJ/3oRSP7ys=";
};

zone "powerdnssec.org" {
    type primary;
    file "powerdnssec.org";
    allow-transfer {  key test.; };
};
```

--------------------------------

### ixfrdist.yml Configuration Example

Source: https://github.com/powerdns/pdns/blob/master/docs/manpages/ixfrdist.yml.5.md

This is a sample ixfrdist.yml configuration file. It demonstrates how to set up listening addresses, access control lists, working directories, user/group permissions, and domain redistribution rules.

```yaml
listen:
  - 192.0.2.2
  - '[2001:DB8:ABCD::2]:5300'
  - 127.0.0.1

acl:
  - 127.0.0.1
  - '192.0.2.0/24'
  - '2001:DB8:ABCD:1234::/64'

work-dir: /var/lib/ixfrdist

uid: ixfrdist
gid: ixfrdist

domains:
  - domain: example.com
    master: 192.0.2.18:5301
    max-soa-refresh: 1800
    notify:
      - 192.0.3.1
      - 192.0.3.2:5301
  - domain: example.net
    master: 2001:DB8:ABCD::2
```

--------------------------------

### JSON/RPC Example for feedEnts

Source: https://github.com/powerdns/pdns/blob/master/docs/backends/remote.md

Illustrates populating missing non-terminals using JSON/RPC, as required by `pdnsutil zone rectify`. If a transaction was started, trxid identifies it.

```json
{"method":"feedEnts","parameters":{"domain_id":2,"trxid":1370416133,"nonterm":["_sip._udp","_udp"]}}
```

```json
{"result":true}
```

--------------------------------

### Install Nginx and Configure SELinux

Source: https://github.com/powerdns/pdns/wiki/How-to-configure-SSL-for-the-PowerDNS-api-using-Nginx

Install the Nginx web server and adjust SELinux settings to allow Nginx to establish network connections.

```bash
sudo yum install nginx -y
nginx -v
setsebool -P httpd_can_network_connect true
```

--------------------------------

### JSON/RPC Example for feedRecord

Source: https://github.com/powerdns/pdns/blob/master/docs/backends/remote.md

Demonstrates feeding a new record into the system using JSON/RPC. If a transaction was started, the trxId identifies it. This is not always called by PowerDNS.

```json
{"method":"feedRecord","parameters":{"rr":{"qtype":"A","qname":"replace.example.com","qclass":1,"content":"127.0.0.1","ttl":300,"auth":true},"trxid":1370416133}}
```

```json
{"result":true}
```

--------------------------------

### Initialize Backend (JSON/RPC)

Source: https://github.com/powerdns/pdns/blob/master/docs/backends/remote.md

Call the initialize method to set up the backend. This is mandatory except for HTTP connectors. Parameters are passed via the connection string.

```json
{"method":"initialize", "parameters":{"command":"/path/to/something", "timeout":"2000", "something":"else"}}
```

```json
{"result":true}
```

--------------------------------

### Create SVCRecordParameters for DoT and DoH

Source: https://github.com/powerdns/pdns/blob/master/pdns/dnsdistdist/docs/reference/svc.rst

Example demonstrating how to create SVCRecordParameters for both DNS-over-TLS (DoT) and DNS-over-HTTPS (DoH) services. This setup is used with SpoofSVCAction to respond to SVCB queries.

```Lua
local svc = { newSVCRecordParameters(1, "dot.powerdns.com.", { mandatory={"port"}, alpn={ "dot" }, noDefaultAlpn=true, port=853, ipv4hint={ "192.0.2.1" }, ipv6hint={ "2001:db8::1" } }),
                  newSVCRecordParameters(2, "doh.powerdns.com.", { mandatory={"port"}, alpn={ "h2" }, port=443, ipv4hint={ "192.0.2.2" }, ipv6hint={ "2001:db8::2" }, key7 = "/dns-query{?dns}" })
                }
    addAction(AndRule{QTypeRule(64), QNameRule('_dns.resolver.arpa.')}, SpoofSVCAction(svc))
    -- reply with NODATA (NXDOMAIN would deny all types at that name and below, including SVC) for other types
    addAction(QNameRule('_dns.resolver.arpa.'), NegativeAndSOAAction(false, '_dns.resolver.arpa.', 3600, 'fake.resolver.arpa.', 'fake.resolver.arpa.', 1, 1800, 900, 604800, 86400))
```

--------------------------------

### Export All Internal Tags via Remote Logging

Source: https://github.com/powerdns/pdns/blob/master/pdns/dnsdistdist/docs/reference/protobuf.rst

Configure remote logging to export all internal tags using the '*' wildcard. This example demonstrates the setup in both YAML and Lua configurations.

```yaml
remote_logging:
  protobuf_loggers:
    - name: "pblog"
      address: "127.0.0.1:5301"
query_rules:
  - name: Export queries including internal tags
    selector:
      type: All
    action:
      type: RemoteLog
      logger_name: "pblog"
      export_tags: "*"
```

--------------------------------

### Configure Protobuf Server with Options

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/docs/lua-config/protobuf.rst

Demonstrates configuring the protobuf server with specific options like timeout, max queued entries, reconnect wait time, and tagged only entries.

```lua
protobufServer({"127.0.0.1:5300"}, {timeout=2, maxQueuedEntries=100, reconnectWaitTime=1, taggedOnly=false})
```

--------------------------------

### Run pdns_server in Foreground with Custom Configuration

Source: https://github.com/powerdns/pdns/blob/master/docs/running.md

Starts PowerDNS in the foreground without loading on-disk configuration. Useful for testing new database configurations or specific backend setups.

```shell
pdns_server --no-config --daemon=no --local-port=5300 --launch=gmysql --gmysql-user=my_user --gmysql-password=mypassword
```

--------------------------------

### Get Server Config Settings using PowerDNS Client

Source: https://github.com/powerdns/pdns/wiki/Python-API-Client

Example of how to configure the API key and retrieve configuration settings for a specific server using the powerdns-client library. Ensure you replace 'YOUR_API_KEY' with your actual API key.

```python
from __future__ import print_function
import time
import powerdns_client
from powerdns_client.rest import ApiException
from pprint import pprint

# Configure API key authorization: APIKeyHeader
configuration = powerdns_client.Configuration()
configuration.api_key['X-API-Key'] = 'YOUR_API_KEY'
# Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
# configuration.api_key_prefix['X-API-Key'] = 'Bearer'

# create an instance of the API class
api_instance = powerdns_client.ConfigApi(powerdns_client.ApiClient(configuration))
server_id = 'server_id_example' # str | The id of the server to retrieve

try:
    # Returns all ConfigSettings for a single server
    api_response = api_instance.get_config(server_id)
    pprint(api_response)
except ApiException as e:
    print("Exception when calling ConfigApi->get_config: %s\n" % e)

```

--------------------------------

### Basic Lua 'Hello World' TXT Record

Source: https://github.com/powerdns/pdns/wiki/Lua-Examples-(Authoritative-LUA-records)

A simple 'Hello World' example demonstrating the basic syntax for a Lua TXT record in PowerDNS. Ensure logging is configured to see output.

```lua
test.example.org  60 IN LUA TXT ";pdnslog('Hello world'); return 'Hello world TXT record'"
```

--------------------------------

### Display `start-test-stop` Help

Source: https://github.com/powerdns/pdns/blob/master/regression-tests/README.md

View available test suites and options for the `start-test-stop` script.

```sh
./start-test-stop help
```

--------------------------------

### Example: Listing All Servers

Source: https://github.com/powerdns/pdns/blob/master/docs/http-api/server.md

This example demonstrates how to list all PowerDNS servers using the API, including the necessary request headers and an example of a successful response.

```http
GET /api/v1/servers HTTP/1.1
X-API-Key: secret
```

```http
HTTP/1.1 200 OK
Content-Type: application/json

[{"autoprimaries_url": "/api/v1/servers/localhost/autoprimaries{/autoprimary}", "config_url": "/api/v1/servers/localhost/config{/config_setting}", "daemon_type": "authoritative", "id": "localhost", "type": "Server", "url": "/api/v1/servers/localhost", "version": "4.6.1", "zones_url": "/api/v1/servers/localhost/zones{/zone}"}]
```

--------------------------------

### List autoprimaries example

Source: https://github.com/powerdns/pdns/blob/master/docs/http-api/autoprimaries.md

Example request and response for listing autoprimaries on localhost.

```http
GET /servers/localhost/autoprimaries HTTP/1.1
X-Api-Key: secret
Content-Type: application/json
```

```http
HTTP/1.1 200 Ok
Content-Type: application/json

[{"ip":"192.0.2.1","nameserver":"ns.example.com","account":""},{"ip":"192.0.2.50","nameserver":"ns.example.org","account":"example"}]
```

--------------------------------

### Example: Set NSEC3 Parameters

Source: https://github.com/powerdns/pdns/blob/master/docs/dnssec/operational.md

An example of setting NSEC3 parameters for a specific domain. For versions prior to 5.0, a different command syntax is used.

```shell
pdnsutil zone set-nsec3 example.net '1 0 0 -'
```

```shell
pdnsutil set-nsec3 example.net '1 0 0 -'
```

--------------------------------

### Install PowerDNS Recursor on macOS

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/docs/getting-started.rst

Install via the Homebrew package manager.

```bash
brew install pdnsrec
```

--------------------------------

### Initialize SQLite3 Database

Source: https://github.com/powerdns/pdns/blob/master/docs/guides/basic-database.md

Create the database directory, initialize the schema, and set appropriate file permissions.

```shell
sudo mkdir /var/lib/powerdns
sudo sqlite3 /var/lib/powerdns/pdns.sqlite3 < /usr/share/doc/pdns-backend-sqlite3/schema.sqlite3.sql
sudo chown -R pdns:pdns /var/lib/powerdns
```

--------------------------------

### Install PowerDNS Recursor on OpenBSD

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/docs/getting-started.rst

Install via the OpenBSD ports system.

```bash
pkg_add pdns-recursor
```

--------------------------------

### Prometheus Metrics Format Example

Source: https://github.com/powerdns/pdns/blob/master/pdns/recursordist/docs/metrics.rst

Example of the Prometheus-formatted output provided by the /metrics endpoint.

```text
# HELP pdns_recursor_all_outqueries Number of outgoing UDP queries since starting
# TYPE pdns_recursor_all_outqueries counter
pdns_recursor_all_outqueries 7
```

--------------------------------

### Initialize Backend Lookup

Source: https://github.com/powerdns/pdns/blob/master/docs/appendices/backend-writers-guide.md

Start a query by calling the lookup method on the backend instance.

```cpp
YourBackend yb;
yb.lookup(QType::CNAME,"www.powerdns.com");
```

--------------------------------

### Initialize Test Variables

Source: https://github.com/powerdns/pdns/blob/master/regression-tests.recursor/README.md

Copy the sample variables file and define the network prefix and daemon execution commands.

```bash
$ cp vars.sample vars
```

```bash
PREFIX=10.0.3
```

```bash
AUTHRUN="exec authbind ../../../pdns/pdns_server --config-dir=. > logfile 2>&1"
```

```bash
RECRUN="exec authbind ../../../pdns/recursordist/pdns_recursor --config-dir=. --socket-dir=. --daemon=no --trace=yes --dont-query= --local-address=$PREFIX.9 --hint-file=hintfile --packetcache-ttl=0 --max-cache-ttl=15 --threads=1 > logfile 2>&1"
```

--------------------------------

### Delete an autoprimary example

Source: https://github.com/powerdns/pdns/blob/master/docs/http-api/autoprimaries.md

Example request and response for deleting an existing autoprimary entry.

```http
DELETE /servers/localhost/autoprimaries/192.0.2.1/ns.example.com HTTP/1.1
X-Api-Key: secret
Content-Type: application/json
```

```http
HTTP/1.1 204 No Content
```

--------------------------------

### Run dnsdist with Configuration File

Source: https://github.com/powerdns/pdns/blob/master/pdns/dnsdistdist/docs/quickstart.rst

Starts dnsdist using a specified configuration file and listens on all available network interfaces on a given port.

```bash
dnsdist -C dnsdist.yml --local=0.0.0.0:5300
```

--------------------------------

### Create an autoprimary example

Source: https://github.com/powerdns/pdns/blob/master/docs/http-api/autoprimaries.md

Example request and response for creating a new autoprimary entry.

```http
POST /servers/localhost/autoprimaries HTTP/1.1
X-Api-Key: secret
Content-Type: application/json

{"ip":"192.0.2.1","nameserver":"ns.example.com","account":""}
```

```http
HTTP/1.1 201 Created
```