docker-pdns/pdns/docker-entrypoint.sh
tafkam 6fe7093c7b
Supermaster support, multiple slaves on the same mysql server (#32)
* better supermaster handling, support for multiple slaves on the same db server

* minor style fix

* requested changes

* replaced cut with awk

* manifests

* newlines

* clarification for axfr
2020-03-29 19:01:11 +02:00

66 lines
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#!/bin/sh
set -euo pipefail
# Configure mysql env vars
: "${PDNS_gmysql_host:=${MYSQL_ENV_MYSQL_HOST:-mysql}}"
: "${PDNS_gmysql_port:=${MYSQL_ENV_MYSQL_PORT:-3306}}"
: "${PDNS_gmysql_user:=${MYSQL_ENV_MYSQL_USER:-root}}"
if [ "${PDNS_gmysql_user}" = 'root' ]; then
: "${PDNS_gmysql_password:=$MYSQL_ENV_MYSQL_ROOT_PASSWORD}"
fi
: "${PDNS_gmysql_password:=${MYSQL_ENV_MYSQL_PASSWORD:-powerdns}}"
: "${PDNS_gmysql_dbname:=${MYSQL_ENV_MYSQL_DATABASE:-powerdns}}"
# use first part of node name as database name suffix
if [ "${NODE_NAME:-}" ]; then
NODE_NAME=$(echo ${NODE_NAME} | sed -e 's/\..*//' -e 's/-//')
PDNS_gmysql_dbname="${PDNS_gmysql_dbname}${NODE_NAME}"
fi
export PDNS_gmysql_host PDNS_gmysql_port PDNS_gmysql_user PDNS_gmysql_password PDNS_gmysql_dbname
# Initialize DB if needed
MYSQL_COMMAND="mysql -h ${PDNS_gmysql_host} -P ${PDNS_gmysql_port} -u ${PDNS_gmysql_user} -p${PDNS_gmysql_password}"
until $MYSQL_COMMAND -e ';' ; do
>&2 echo 'MySQL is unavailable - sleeping'
sleep 3
done
$MYSQL_COMMAND -e "CREATE DATABASE IF NOT EXISTS ${PDNS_gmysql_dbname}"
MYSQL_CHECK_IF_HAS_TABLE="SELECT COUNT(DISTINCT table_name) FROM information_schema.columns WHERE table_schema = '${PDNS_gmysql_dbname}';"
MYSQL_NUM_TABLE=$($MYSQL_COMMAND --batch --skip-column-names -e "$MYSQL_CHECK_IF_HAS_TABLE")
if [ "$MYSQL_NUM_TABLE" -eq 0 ]; then
$MYSQL_COMMAND -D "$PDNS_gmysql_dbname" < /usr/share/doc/pdns/schema.mysql.sql
fi
if [ "${PDNS_superslave:-no}" == "yes" ]; then
# Configure supermasters if needed
if [ "${SUPERMASTER_IPS:-}" ]; then
$MYSQL_COMMAND -D "$PDNS_gmysql_dbname" -e "TRUNCATE supermasters;"
MYSQL_INSERT_SUPERMASTERS=''
if [ "${SUPERMASTER_COUNT:-0}" == "0" ]; then
SUPERMASTER_COUNT=10
fi
i=1; while [ $i -le ${SUPERMASTER_COUNT} ]; do
SUPERMASTER_HOST=$(echo ${SUPERMASTER_HOSTS:-} | awk -v col="$i" '{ print $col }')
SUPERMASTER_IP=$(echo ${SUPERMASTER_IPS} | awk -v col="$i" '{ print $col }')
if [ -z "${SUPERMASTER_HOST:-}" ]; then
SUPERMASTER_HOST=$(hostname -f)
fi
if [ "${SUPERMASTER_IP:-}" ]; then
MYSQL_INSERT_SUPERMASTERS="${MYSQL_INSERT_SUPERMASTERS} INSERT INTO supermasters VALUES('${SUPERMASTER_IP}', '${SUPERMASTER_HOST}', 'admin');"
fi
i=$(( i + 1 ))
done
$MYSQL_COMMAND -D "$PDNS_gmysql_dbname" -e "$MYSQL_INSERT_SUPERMASTERS"
fi
fi
# Create config file from template
envtpl < /pdns.conf.tpl > /etc/pdns/pdns.conf
exec "$@"