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docker-entrypoint.sh
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docker-entrypoint.sh
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#!/bin/bash
# Backwards compatibility for old variable names (deprecated)
if [ "x$PGUSER" != "x" ]; then
POSTGRES_USER=$PGUSER
fi
if [ "x$PGPASSWORD" != "x" ]; then
POSTGRES_PASSWORD=$PGPASSWORD
fi
# Forwards-compatibility for old variable names (pg_basebackup uses them)
if [ "x$PGPASSWORD" = "x" ]; then
export PGPASSWORD=$POSTGRES_PASSWORD
fi
# Based on official postgres package's entrypoint script (https://hub.docker.com/_/postgres/)
# Modified to be able to set up a slave. The docker-entrypoint-initdb.d hook provided is inadequate.
set -e
if [ "${1:0:1}" = '-' ]; then
set -- postgres "$@"
fi
if [ "$1" = 'postgres' ]; then
mkdir -p "$PGDATA"
chmod 700 "$PGDATA"
chown -R postgres "$PGDATA"
mkdir -p /run/postgresql
chmod g+s /run/postgresql
chown -R postgres /run/postgresql
# look specifically for PG_VERSION, as it is expected in the DB dir
if [ ! -s "$PGDATA/PG_VERSION" ]; then
if [ "x$REPLICATE_FROM" == "x" ]; then
eval "gosu postgres initdb $POSTGRES_INITDB_ARGS"
else
until ping -c 1 -W 1 ${REPLICATE_FROM}
do
echo "Waiting for master to ping..."
sleep 1s
done
until gosu postgres pg_basebackup -h ${REPLICATE_FROM} -D ${PGDATA} -U ${POSTGRES_USER} -vP -w
do
echo "Waiting for master to connect..."
sleep 1s
done
fi
# check password first so we can output the warning before postgres
# messes it up
if [ "$POSTGRES_PASSWORD" ]; then
pass="PASSWORD '$POSTGRES_PASSWORD'"
authMethod=md5
else
# The - option suppresses leading tabs but *not* spaces. :)
cat >&2 <<-'EOWARN'
****************************************************
WARNING: No password has been set for the database.
This will allow anyone with access to the
Postgres port to access your database. In
Docker's default configuration, this is
effectively any other container on the same
system.
Use "-e POSTGRES_PASSWORD=password" to set
it in "docker run".
****************************************************
EOWARN
pass=
authMethod=trust
fi
{ echo; echo "host replication all 0.0.0.0/0 $authMethod"; } | gosu postgres tee -a "$PGDATA/pg_hba.conf" > /dev/null
{ echo; echo "host all all 0.0.0.0/0 $authMethod"; } | gosu postgres tee -a "$PGDATA/pg_hba.conf" > /dev/null
if [ "x$REPLICATE_FROM" == "x" ]; then
# internal start of server in order to allow set-up using psql-client
# does not listen on external TCP/IP and waits until start finishes
gosu postgres pg_ctl -D "$PGDATA" \
-o "-c listen_addresses='localhost'" \
-w start
: ${POSTGRES_USER:=postgres}
: ${POSTGRES_DB:=$POSTGRES_USER}
export POSTGRES_USER POSTGRES_DB
psql=( psql -v ON_ERROR_STOP=1 )
if [ "$POSTGRES_DB" != 'postgres' ]; then
"${psql[@]}" --username postgres <<-EOSQL
CREATE DATABASE "$POSTGRES_DB" ;
EOSQL
echo
fi
if [ "$POSTGRES_USER" = 'postgres' ]; then
op='ALTER'
else
op='CREATE'
fi
"${psql[@]}" --username postgres <<-EOSQL
$op USER "$POSTGRES_USER" WITH SUPERUSER $pass ;
EOSQL
echo
fi
psql+=( --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" )
echo
for f in /docker-entrypoint-initdb.d/*; do
case "$f" in
*.sh) echo "$0: running $f"; . "$f" ;;
*.sql) echo "$0: running $f"; "${psql[@]}" < "$f"; echo ;;
*.sql.gz) echo "$0: running $f"; gunzip -c "$f" | "${psql[@]}"; echo ;;
*) echo "$0: ignoring $f" ;;
esac
echo
done
if [ "x$REPLICATE_FROM" == "x" ]; then
gosu postgres pg_ctl -D "$PGDATA" -m fast -w stop
fi
echo
echo 'PostgreSQL init process complete; ready for start up.'
echo
fi
exec gosu postgres "$@"
fi
exec "$@"