+++
title = "pdsql"
description = "*pdsql* - uses powerdns generic sql as backend."
weight = 10
tags = [  "plugin" , "pdsql" ]
categories = [ "plugin", "external" ]
date = "2017-12-09T10:26:00+08:00"
repo = "https://github.com/wenerme/coredns-pdsql"
home = "https://github.com/wenerme/coredns-pdsql/blob/master/README.md"
+++

# Description

*pdsql* uses PowerDNS [generic sql](https://github.com/PowerDNS/pdns/tree/master/pdns/backends/gsql) as backend.

Use [jinzhu/gorm](https://github.com/jinzhu/gorm) database drivers, supports as many databases as Gorm does.


## Syntax

~~~ txt
pdsql <dialect> <arg> {
    // enable debug mode
    debug [db]
    // create table for test
    auto-migrate
}
~~~

## Install Driver
pdsql needs db drivers for dialect, to install a driver you need to add an import in `plugin.cfg`, like

~~~ txt
pdsql_mysql:github.com/jinzhu/gorm/dialects/mysql
pdsql_sqlite:github.com/jinzhu/gorm/dialects/sqlite
~~~

pdsql_mysql and pdsql_sqlite are meaningless, specified to prevent duplicates.

## Examples

Start a server on port `1053`, use `test.db` as backend.

~~~ corefile
test.:1053 {
    pdsql sqlite3 ./test.db {
        debug db
        auto-migrate
    }
}
~~~

Prepare data for test.

~~~ bash
# Insert records for wener.test
sqlite3 ./test.db 'insert into records(name,type,content,ttl,disabled)values("wener.test","A","192.168.1.1",3600,0)'
sqlite3 ./test.db 'insert into records(name,type,content,ttl,disabled)values("wener.test","TXT","TXT Here",3600,0)'
~~~

When queried for "wener.test. A", CoreDNS will respond with:

~~~ txt
;; QUESTION SECTION:
;wener.test.			IN	A

;; ANSWER SECTION:
wener.test.		3600	IN	A	192.168.1.1
~~~

When queried for "wener.test. ANY", CoreDNS will respond with:

~~~ txt
;; QUESTION SECTION:
;wener.test.			IN	ANY

;; ANSWER SECTION:
wener.test.		3600	IN	A	192.168.1.1
wener.test.		3600	IN	TXT	"TXT Here"
~~~

### Wildcard

~~~ bash
# domain id 1
sqlite3 ./test.db 'insert into domains(name,type)values("example.test","NATIVE")'
sqlite3 ./test.db 'insert into records(domain_id,name,type,content,ttl,disabled)values(1,"*.example.test","A","192.168.1.1",3600,0)'
~~~

When queried for "first.example.test. A", CoreDNS will respond with:

~~~ txt
;; QUESTION SECTION:
;first.example.test.		IN	A

;; ANSWER SECTION:
first.example.test.	3600	IN	A	192.168.1.1
~~~