PowerDNS LUA Install

#!/usr/bin/env bash
set -ex

systemctl stop systemd-resolved
touch /etc/dnsmasq.hosts
systemctl disable systemd-resolved
systemctl mask systemd-resolved
rm /etc/resolv.conf
# sed -i 's/nameserver.*/nameserver 8.8.8.8/' /etc/resolv.conf
echo "nameserver 10.64.4.1" > /etc/resolv.conf


db_name=pdns
db_user=pdns
db_pass=pdns
export PGPASSWORD="pdns"
. /etc/os-release
echo "deb [arch=amd64] http://repo.powerdns.com/$ID $VERSION_CODENAME-auth-master main" > /etc/apt/sources.list.d/pdns.list
echo "Package: pdns-*
Pin: origin repo.powerdns.com
Pin-Priority: 600" > /etc/apt/preferences.d/pdns
sudo apt-get update
sudo apt install postgresql-12
curl https://repo.powerdns.com/CBC8B383-pub.asc | sudo apt-key add - &&
  sudo apt-get update &&
  sudo apt-get install -y pdns-server pdns-backend-pgsql
systemctl stop pdns
# sql="SELECT pg_terminate_backend(pg_stat_activity.pid)
# FROM pg_stat_activity
# WHERE pg_stat_activity.datname = '$db_name' --  change this to your DB
#   AND pid <> pg_backend_pid()"
# sudo -i -u postgres psql -c $sql || true
sudo pkill psql || true
sudo -i -u postgres psql -c "DROP DATABASE $db_name" || true
sudo -i -u postgres psql -c "DROP OWNED BY $db_user CASCADE" || true
sudo -i -u postgres psql -c "DROP ROLE $db_user" || true
sudo -i -u postgres psql -c "CREATE ROLE $db_user WITH SUPERUSER CREATEDB CREATEROLE LOGIN ENCRYPTED PASSWORD '$db_pass'"
sudo -i -u postgres psql -c "CREATE DATABASE $db_name OWNER $db_user"
sudo psql -U pdns password=$db_pass -h 127.0.0.1 pdns < /usr/share/doc/pdns-backend-pgsql/schema.pgsql.sql
sudo psql -U pdns password=$db_pass -h 127.0.0.1 pdns < /root/luadns.sql

# cp -p /usr/share/doc/pdns-backend-pgsql/examples/pdns.local.gpgsql.conf  /etc/powerdns/pdns.d/
echo "enable-lua-records=yes
# PostgreSQL Configuration
#
# Launch gpgsql backend
launch+=gpgsql

# gpgsql parameters
gpgsql-host=127.0.0.1
gpgsql-port=5432
gpgsql-dbname=pdns
gpgsql-user=pdns
gpgsql-password=pdns
gpgsql-dnssec=yes" > /etc/powerdns/pdns.d/pdns.local.gpgsql.conf

systemctl start pdns
systemctl is-active --quiet pdns
systemctl is-active --quiet postgresql

dig +short www.example.com @127.0.0.1
dig +short pickclosest.example.com @127.0.0.1
dig +short ifportup.example.com @127.0.0.1

/root/luadns.sql

INSERT INTO domains (name, type) values ('example.com', 'NATIVE');
-- INSERT INTO domains (id, name, type) VALUES (1, 'example.com', 'NATIVE');
INSERT INTO records (domain_id, name, content, type,ttl,prio)
VALUES (1,'example.com','localhost admin.example.com 1 10380 3600 604800 3600','SOA',86400,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio)
VALUES (1,'example.com','dns-us1.powerdns.net','NS',86400,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio)
VALUES (1,'example.com','dns-eu1.powerdns.net','NS',86400,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio)
VALUES (1,'www.example.com','192.0.2.10','A',120,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio)
VALUES (1,'mail.example.com','192.0.2.12','A',120,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio)
VALUES (1,'localhost.example.com','127.0.0.1','A',120,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio)
VALUES (1,'example.com','mail.example.com','MX',120,25);


-- Enable Lua records for the zone (if not enabled globally)
INSERT INTO domainmetadata (domain_id, kind, content)
VALUES (1, 'ENABLE-LUA-RECORDS', 1);

-- Create a pickClosest() Lua A record.
-- Double single quotes are used to escape single quotes in both MySQL and PostgreSQL
INSERT INTO records (domain_id, name, type, content, ttl)
VALUES (
          1,
          'pickclosest.example.com',
          'LUA',
          'A "pickclosest({''192.0.2.1'',''192.0.2.2'',''198.51.100.1''})"',
          600
);


INSERT INTO records (domain_id, name, type, content, ttl)
VALUES (
          1,
          'ifurlup.example.com',
          'LUA',
        'A "ifurlup(''https://www.uvoo.io/'', {''192.168.1.1'', ''192.168.1.2''})"',
        600
);

INSERT INTO records (domain_id, name, type, content, ttl)
VALUES (
          1,
          'ifportup.example.com',
          'LUA',
        'A "ifportup(''443'', {''10.64.7.62'', ''172.217.164.4''})"',
        -- 'A "ifportup(''443'', {''10.64.7.62'', ''10.64.7.63''})"',
        600
);