Init Commit
This commit is contained in:
Simon Waldburger
46
Dockerfile
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46
Dockerfile
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FROM debian:trixie-slim
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LABEL maintainer="Simon M. Waldburger <simon.waldburger@i-xperts.com>"
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LABEL last_changed="2025-10-09"
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RUN apt-get update && \
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apt-get -y upgrade && \
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apt-get install -y curl ca-certificates locales && \
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localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8 && \
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apt-get clean && \
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rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
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ADD https://www.postgresql.org/media/keys/ACCC4CF8.asc /etc/apt/keyrings/postgres-pub.asc
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ADD build/postgres.source /etc/apt/sources.list.d/postgres.source
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ADD https://repo.powerdns.com/FD380FBB-pub.asc /etc/apt/keyrings/powerdns-pub.asc
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ADD build/pdns.sources /etc/apt/sources.list.d/pdns.sources
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ADD build/pdns.preferences /etc/apt/preferences.d/pdns
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RUN chmod 644 /etc/apt/keyrings/powerdns-pub.asc && \
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apt-get update && \
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echo "path-include /usr/share/doc/*/*.sql" >> /etc/dpkg/dpkg.cfg.d/docker && \
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DEBIAN_FRONTEND=noninteractive apt-get install -q -y pdns-server pdns-backend-pgsql postgresql-client-18 && \
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rm /etc/powerdns/pdns.d/*.conf && rm /etc/powerdns/*.conf && \
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apt-get clean && \
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rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
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USER root
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RUN mkdir -p /app
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COPY build/entrypoint.sh /app/entrypoint.sh
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COPY build/pdns.conf.tpl /app/pdns.conf.tpl
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RUN chmod 755 /app/entrypoint.sh /app/wait-for-it.sh
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RUN chown -R pdns: /app
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ENV VERSION=4.9 \
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PDNS_guardian=yes \
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PDNS_setuid=pdns \
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PDNS_setgid=pdns \
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PDNS_launch=gpgsql
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EXPOSE 8081 53 53/udp
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HEALTHCHECK --interval=10s --timeout=10s --retries=3 --start-period=2s CMD ["pdns_control", "ping"]
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ENTRYPOINT [ "/docker-entrypoint.sh" ]
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CMD [ "/usr/sbin/pdns_server" ]
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127
build/entrypoint.sh
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127
build/entrypoint.sh
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#!/bin/sh
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set -eu
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: "${DEBUG:=0}"
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if [ "${DEBUG}" -eq 1 ]; then
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set -x
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fi
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##### Function definitions ####
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derivePostgreSQLSettingsFromExistingConfigFile() {
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if [ ! -f /etc/pdns/pdns.conf ]; then
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echo "Use of existing file /etc/pdns/pdns.conf requested but file does not exist!"
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exit 1
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fi
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PDNS_gpgsql_host=$(sed -n 's/^gpgsql-host=\(.*\)/\1/p' < /etc/pdns/pdns.conf)
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PDNS_gpgsql_port=$(sed -n 's/^gpgsql-port=\(.*\)/\1/p' < /etc/pdns/pdns.conf)
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PDNS_gpgsql_user=$(sed -n 's/^gpgsql-user=\(.*\)/\1/p' < /etc/pdns/pdns.conf)
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PDNS_gpgsql_password=$(sed -n 's/^gpgsql-password=\(.*\)/\1/p' < /etc/pdns/pdns.conf)
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PDNS_gpgsql_dbname=$(sed -n 's/^gpgsql-dbname=\(.*\)/\1/p' < /etc/pdns/pdns.conf)
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}
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derivePostgreSQLSettingsFromEnvironment() {
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# Configure gpgsql env vars
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: "${PDNS_gpgsql_host:=pgsql}"
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: "${PDNS_gpgsql_port:=5432}"
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: "${PDNS_gpgsql_user:=${PGSQL_ENV_POSTGRES_USER:-postgres}}"
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: "${PDNS_gpgsql_password:=${PGSQL_ENV_POSTGRES_PASSWORD:-powerdns}}"
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: "${PDNS_gpgsql_dbname:=${PGSQL_ENV_POSTGRES_DB:-powerdns}}"
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# Use first part of node name as database name suffix
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if [ "${NODE_NAME:-}" ]; then
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NODE_NAME=$(echo "${NODE_NAME}" | sed -e 's/\..*//' -e 's/-//')
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PDNS_gpgsql_dbname="${PDNS_gpgsql_dbname}${NODE_NAME}"
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fi
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export PDNS_gpgsql_host PDNS_gpgsql_port PDNS_gpgsql_user PDNS_gpgsql_password PDNS_gpgsql_dbname
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}
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generatePostgreSQLCommand() {
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PGSQL_COMMAND="psql -h ${PDNS_gpgsql_host} -p ${PDNS_gpgsql_port} -U ${PDNS_gpgsql_user}"
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}
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createDatabaseIfRequested() {
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# Initialize DB if needed
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if [ "${SKIP_DB_CREATE:-false}" != 'true' ]; then
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echo "SELECT 'CREATE DATABASE ${PDNS_gpgsql_dbname}' WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '${PDNS_gpgsql_dbname}')\gexec" | $PGSQL_COMMAND
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fi
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}
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initDatabase() {
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if [ "${SKIP_DB_INIT:-false}" != 'true' ]; then
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PGSQL_CHECK_IF_HAS_TABLE="SELECT COUNT(DISTINCT table_name) FROM information_schema.columns WHERE table_catalog = '${PDNS_gpgsql_dbname}' AND table_schema = 'public';"
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PGSQL_NUM_TABLE=$($PGSQL_COMMAND -At -d "$PDNS_gpgsql_dbname" -c "$PGSQL_CHECK_IF_HAS_TABLE")
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if [ "$PGSQL_NUM_TABLE" -eq 0 ]; then
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echo "Database exists and has no tables yet, doing init";
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$PGSQL_COMMAND -d "$PDNS_gpgsql_dbname" < /usr/share/doc/pdns/schema.pgsql.sql
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else
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echo "Database exists but already has tables, will not try to init";
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fi
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fi
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}
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initSuperslave() {
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if [ "${PDNS_autosecondary:-no}" = 'yes' ] || [ "${PDNS_superslave:-no}" = 'yes' ]; then
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# Configure supermasters if needed
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if [ "${SUPERMASTER_IPS:-}" ]; then
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$PGSQL_COMMAND -d "$PDNS_gpgsql_dbname" -c 'TRUNCATE supermasters;'
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PGSQL_INSERT_SUPERMASTERS=''
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if [ "${SUPERMASTER_COUNT:-0}" -eq 0 ]; then
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SUPERMASTER_COUNT=10
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fi
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i=1; while [ $i -le "${SUPERMASTER_COUNT}" ]; do
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SUPERMASTER_HOST=$(echo "${SUPERMASTER_HOSTS:-}" | awk -v col="$i" '{ print $col }')
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SUPERMASTER_IP=$(echo "${SUPERMASTER_IPS}" | awk -v col="$i" '{ print $col }')
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if [ -z "${SUPERMASTER_HOST:-}" ]; then
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SUPERMASTER_HOST=$(hostname -f)
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fi
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if [ "${SUPERMASTER_IP:-}" ]; then
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PGSQL_INSERT_SUPERMASTERS="${PGSQL_INSERT_SUPERMASTERS} INSERT INTO supermasters VALUES('${SUPERMASTER_IP}', '${SUPERMASTER_HOST}', 'admin');"
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fi
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i=$(( i + 1 ))
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done
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$PGSQL_COMMAND -d "$PDNS_gpgsql_dbname" -c "$PGSQL_INSERT_SUPERMASTERS"
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fi
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fi
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}
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generateAndInstallConfigFileFromEnvironment() {
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# Create config file from template
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subvars --prefix 'PDNS_' < '/app/pdns.conf.tpl' > '/etc/pdns/pdns.conf'
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}
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#### End of function definitions, let's get to work ...
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if [ "${USE_EXISTING_CONFIG_FILE:-false}" = 'true' ]; then
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derivePostgreSQLSettingsFromExistingConfigFile
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else
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derivePostgreSQLSettingsFromEnvironment
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fi
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generatePostgreSQLCommand
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PGPASSWORD="${PDNS_gpgsql_password}"
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export PGPASSWORD
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# Wait for pgsql to respond
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until $PGSQL_COMMAND -c ';' ; do
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>&2 echo 'Pgsql is unavailable - sleeping'
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sleep 3
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done
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createDatabaseIfRequested
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initDatabase
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initSuperslave
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if [ "${USE_EXISTING_CONFIG_FILE:-false}" = 'false' ]; then
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echo "(re-)generating config file from environment variables"
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generateAndInstallConfigFileFromEnvironment
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fi
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unset PGPASSWORD
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exec "$@"
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3
build/pdns.conf.tpl
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3
build/pdns.conf.tpl
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{{ range $key, $value := match "PDNS_" -}}
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{{- $key | trimPrefix "PDNS_" | replace "_" "-" }} = {{ $value }}
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{{ end -}}
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3
build/pdns.preferences
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3
build/pdns.preferences
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Package: pdns-*
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Pin: origin repo.powerdns.com
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Pin-Priority: 600
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5
build/pdns.sources
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5
build/pdns.sources
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Types: deb
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URIs: https://repo.powerdns.com/debian/
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Suites: trixie-auth-50
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Components: main
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Signed-By: /etc/apt/keyrings/powerdns-pub.asc
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5
build/postgres.sources
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5
build/postgres.sources
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Types: deb
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URIs: https://apt.postgresql.org/pub/repos/apt
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Suites: trixie-pgdg
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Components: main
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Signed-By: /etc/apt/keyrings/postgres-pub.asc
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