docker_powerdns_authorative_dockerfile

FROM alpine:3.16.2


MAINTAINER "[email protected]" 
LABEL maintainer="[email protected]" 
LABEL image="ginhoux.net/powerdns-authorative"
LABEL tag="4.6.3-alpine-3.16.2"
LABEL description=""


ENV POWERDNS_VERSION=4.6.3
ENV POWERDNS_BUILD_MODULES="bind gmysql gpgsql gsqlite3"
# ENV MYSQL_DEFAULT_AUTOCONF=true
# ENV MYSQL_DEFAULT_HOST="mysql"
# ENV MYSQL_DEFAULT_PORT="3306"
# ENV MYSQL_DEFAULT_USER="root"
# ENV MYSQL_DEFAULT_PASS="root"
# ENV MYSQL_DEFAULT_DB="pdns"


RUN apk --update add bash libpq sqlite-libs libstdc++ libgcc mariadb-client mariadb-connector-c lua-dev curl-dev && \
    apk add --virtual build-deps g++ make mariadb-dev postgresql-dev sqlite-dev curl boost-dev mariadb-connector-c-dev && \
    curl -sSL https://downloads.powerdns.com/releases/pdns-$POWERDNS_VERSION.tar.bz2 | tar xj -C /tmp && \
    cd /tmp/pdns-$POWERDNS_VERSION && \
    ./configure --prefix="" --exec-prefix=/usr --sysconfdir=/etc/pdns --with-modules="$POWERDNS_BUILD_MODULES" && \
    make && \
    make install-strip && \
    cd / && \
    mkdir -p /etc/pdns/conf.d && \
    addgroup -S pdns 2>/dev/null && \
    adduser -S -D -H -h /var/empty -s /bin/false -G pdns -g pdns pdns 2>/dev/null && \
    cp /usr/lib/libboost_program_options.so* /tmp && \
    apk del --purge build-deps && \
    mv /tmp/lib* /usr/lib/ && \
    rm -rf /tmp/pdns-$POWERDNS_VERSION /var/cache/apk/*


# EXPOSE 53/tcp 53/udp


# ADD schema.sql /etc/pdns/
# ADD pdns.conf /etc/pdns/
ADD entrypoint.sh /


ENTRYPOINT ["/entrypoint.sh"]

docker_powerdns_authorative_entrypoint.sh

#!/bin/bash
set -e


# usage: file_env VAR [DEFAULT]
#    ie: file_env 'XYZ_DB_PASSWORD' 'example'
# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
#  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
# source: https://github.com/docker-library/mariadb/blob/master/docker-entrypoint.sh
file_env() {
  local var="$1"
  local fileVar="${var}_FILE"
  local def="${2:-}"
  if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
    echo "Both $var and $fileVar are set (but are exclusive)"
    exit 1
  fi
  local val="$def"
  if [ "${!var:-}" ]; then
    val="${!var}"
  elif [ "${!fileVar:-}" ]; then
    val="$(< "${!fileVar}")"
  fi
  export "$var"="$val"
  unset "$fileVar"
}


# Loads various settings that are used elsewhere in the script
docker_setup_env() {
  # Initialize values that might be stored in a file
  file_env 'MYSQL_AUTOCONF' $MYSQL_DEFAULT_AUTOCONF
  file_env 'MYSQL_HOST' $MYSQL_DEFAULT_HOST
  file_env 'MYSQL_DNSSEC' 'no'
  file_env 'MYSQL_DB' $MYSQL_DEFAULT_DB
  file_env 'MYSQL_PASS' $MYSQL_DEFAULT_PASS
  file_env 'MYSQL_USER' $MYSQL_DEFAULT_USER
  file_env 'MYSQL_PORT' $MYSQL_DEFAULT_PORT
}


docker_setup_env


# --help, --version
[ "$1" = "--help" ] || [ "$1" = "--version" ] && exec pdns_server $1
# treat everything except -- as exec cmd
[ "${1:0:2}" != "--" ] && exec "$@"

if $MYSQL_AUTOCONF ; then
  # Set MySQL Credentials in pdns.conf
  sed -r -i "s/^[# ]*gmysql-host=.*/gmysql-host=${MYSQL_HOST}/g" /etc/pdns/pdns.conf
  sed -r -i "s/^[# ]*gmysql-port=.*/gmysql-port=${MYSQL_PORT}/g" /etc/pdns/pdns.conf
  sed -r -i "s/^[# ]*gmysql-user=.*/gmysql-user=${MYSQL_USER}/g" /etc/pdns/pdns.conf
  sed -r -i "s/^[# ]*gmysql-password=.*/gmysql-password=${MYSQL_PASS}/g" /etc/pdns/pdns.conf
  sed -r -i "s/^[# ]*gmysql-dbname=.*/gmysql-dbname=${MYSQL_DB}/g" /etc/pdns/pdns.conf
  sed -r -i "s/^[# ]*gmysql-dnssec=.*/gmysql-dnssec=${MYSQL_DNSSEC}/g" /etc/pdns/pdns.conf

  MYSQLCMD="mysql --host=${MYSQL_HOST} --user=${MYSQL_USER} --password=${MYSQL_PASS} --port=${MYSQL_PORT} -r -N"

  # wait for Database come ready
  isDBup () {
    echo "SHOW STATUS" | $MYSQLCMD 1>/dev/null
    echo $?
  }

  RETRY=10
  until [ `isDBup` -eq 0 ] || [ $RETRY -le 0 ] ; do
    echo "Waiting for database to come up"
    sleep 5
    RETRY=$(expr $RETRY - 1)
  done
  if [ $RETRY -le 0 ]; then
    >&2 echo Error: Could not connect to Database on $MYSQL_HOST:$MYSQL_PORT
    exit 1
  fi

  # init database if necessary
  echo "CREATE DATABASE IF NOT EXISTS $MYSQL_DB;" | $MYSQLCMD
  MYSQLCMD="$MYSQLCMD $MYSQL_DB"

  if [ "$(echo "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = \"$MYSQL_DB\";" | $MYSQLCMD)" -le 1 ]; then
    echo Initializing Database
    cat /etc/pdns/schema.sql | $MYSQLCMD
    # Run custom mysql post-init sql scripts
    if [ -d "/etc/pdns/mysql-postinit" ]; then
      for SQLFILE in $(ls -1 /etc/pdns/mysql-postinit/*.sql | sort) ; do
        echo Source $SQLFILE
        cat $SQLFILE | $MYSQLCMD
      done
    fi
  fi

  unset -v MYSQL_PASS
fi


# Run pdns server
trap "pdns_control quit" SIGHUP SIGINT SIGTERM
pdns_server "$@" &
wait