mirror of
https://github.com/pschiffe/docker-pdns.git
synced 2024-11-14 12:17:57 +01:00
3ba3021b68
* Added possibility to use an existing config file for recursor or authorative mysql-powerdns-server, in case the configuration file is handed in from a volume or bind mount (in which it should be mounted as read only!). * ammended changes to PostgreSQL init to provide the same features as the MySQL one. * do not forget to init superslaves if needed. * typos and really do install config file by environment. --------- Co-authored-by: Kai Schlachter <kai.schlachter@bahag.com>
120 lines
4.2 KiB
Bash
Executable file
120 lines
4.2 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
set -eu
|
|
|
|
function derivePostgreSQLSettingsFromExistingConfigFile {
|
|
if [ ! -f /etc/pdns/pdns.conf ]; then
|
|
echo "Use of existing file /etc/pdns/pdns.conf requested but file does not exist!"
|
|
exit 1
|
|
fi
|
|
PDNS_gpgsql_host=`sed -n 's/^gpgsql-host=\(.*\)/\1/p' < /etc/pdns/pdns.conf`
|
|
PDNS_gpgsql_port=`sed -n 's/^gpgsql-port=\(.*\)/\1/p' < /etc/pdns/pdns.conf`
|
|
PDNS_gpgsql_user=`sed -n 's/^gpgsql-user=\(.*\)/\1/p' < /etc/pdns/pdns.conf`
|
|
PDNS_gpgsql_password=`sed -n 's/^gpgsql-password=\(.*\)/\1/p' < /etc/pdns/pdns.conf`
|
|
PDNS_gpgsql_dbname=`sed -n 's/^gpgsql-dbname=\(.*\)/\1/p' < /etc/pdns/pdns.conf`
|
|
}
|
|
|
|
function derivePostgreSQLSettingsFromEnvironment {
|
|
# Configure gpgsql env vars
|
|
: "${PDNS_gpgsql_host:=pgsql}"
|
|
: "${PDNS_gpgsql_port:=5432}"
|
|
: "${PDNS_gpgsql_user:=${PGSQL_ENV_POSTGRES_USER:-postgres}}"
|
|
: "${PDNS_gpgsql_password:=${PGSQL_ENV_POSTGRES_PASSWORD:-powerdns}}"
|
|
: "${PDNS_gpgsql_dbname:=${PGSQL_ENV_POSTGRES_DB:-powerdns}}"
|
|
|
|
# Use first part of node name as database name suffix
|
|
if [ "${NODE_NAME:-}" ]; then
|
|
NODE_NAME=$(echo "${NODE_NAME}" | sed -e 's/\..*//' -e 's/-//')
|
|
PDNS_gpgsql_dbname="${PDNS_gpgsql_dbname}${NODE_NAME}"
|
|
fi
|
|
|
|
export PDNS_gpgsql_host PDNS_gpgsql_port PDNS_gpgsql_user PDNS_gpgsql_password PDNS_gpgsql_dbname
|
|
}
|
|
|
|
|
|
|
|
function generatePostgreSQLCommand {
|
|
PGSQL_COMMAND="psql -h ${PDNS_gpgsql_host} -p ${PDNS_gpgsql_port} -U ${PDNS_gpgsql_user}"
|
|
}
|
|
|
|
function createDatabaseIfRequested {
|
|
# Initialize DB if needed
|
|
if [ "${SKIP_DB_CREATE:-false}" != 'true' ]; then
|
|
echo "SELECT 'CREATE DATABASE ${PDNS_gpgsql_dbname}' WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '${PDNS_gpgsql_dbname}')\gexec" | $PGSQL_COMMAND
|
|
fi
|
|
}
|
|
|
|
function initDatabase {
|
|
if [ "${SKIP_DB_INIT:-false}" != 'true' ]; then
|
|
PGSQL_CHECK_IF_HAS_TABLE="SELECT COUNT(DISTINCT table_name) FROM information_schema.columns WHERE table_catalog = '${PDNS_gpgsql_dbname}' AND table_schema = 'public';"
|
|
PGSQL_NUM_TABLE=$($PGSQL_COMMAND -At -d "$PDNS_gpgsql_dbname" -c "$PGSQL_CHECK_IF_HAS_TABLE")
|
|
if [ "$PGSQL_NUM_TABLE" -eq 0 ]; then
|
|
echo "Database exists and has no tables yet, doing init";
|
|
$PGSQL_COMMAND -d "$PDNS_gpgsql_dbname" < /usr/share/doc/pdns/schema.pgsql.sql
|
|
else
|
|
echo "Database exists but already has tables, will not try to init";
|
|
fi
|
|
fi
|
|
}
|
|
|
|
function initSuperslave {
|
|
if [ "${PDNS_superslave:-no}" = 'yes' ]; then
|
|
# Configure supermasters if needed
|
|
if [ "${SUPERMASTER_IPS:-}" ]; then
|
|
$PGSQL_COMMAND -d "$PDNS_gpgsql_dbname" -c 'TRUNCATE supermasters;'
|
|
PGSQL_INSERT_SUPERMASTERS=''
|
|
if [ "${SUPERMASTER_COUNT:-0}" -eq 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
|
|
PGSQL_INSERT_SUPERMASTERS="${PGSQL_INSERT_SUPERMASTERS} INSERT INTO supermasters VALUES('${SUPERMASTER_IP}', '${SUPERMASTER_HOST}', 'admin');"
|
|
fi
|
|
i=$(( i + 1 ))
|
|
done
|
|
$PGSQL_COMMAND -d "$PDNS_gpgsql_dbname" -c "$PGSQL_INSERT_SUPERMASTERS"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
function generateAndInstallConfigFileFromEnvironment {
|
|
# Create config file from template
|
|
subvars --prefix 'PDNS_' < '/pdns.conf.tpl' > '/etc/pdns/pdns.conf'
|
|
}
|
|
###End of function definitions
|
|
|
|
if [ ${USE_EXISTING_CONFIG_FILE:-false} = 'true' ]; then
|
|
derivePostgreSQLSettingsFromExistingConfigFile
|
|
else
|
|
derivePostgreSQLSettingsFromEnvironment
|
|
fi
|
|
|
|
generatePostgreSQLCommand
|
|
|
|
PGPASSWORD="${PDNS_gpgsql_password}"
|
|
export PGPASSWORD
|
|
|
|
# Wait for pgsql to respond
|
|
until $PGSQL_COMMAND -c ';' ; do
|
|
>&2 echo 'Pgsql is unavailable - sleeping'
|
|
sleep 3
|
|
done
|
|
|
|
createDatabaseIfRequested
|
|
initDatabase
|
|
initSuperslave
|
|
|
|
if [ ${USE_EXISTING_CONFIG_FILE:-false} = 'false' ]; then
|
|
echo "(re-)generating config file from environment variables"
|
|
generateAndInstallConfigFileFromEnvironment
|
|
fi
|
|
|
|
|
|
unset PGPASSWORD
|
|
|
|
exec "$@"
|