devstack/lib/databases/postgresql
Terry Wilson 428af5a257 Add PostgreSQL support to devstack
This patch adds an interface for supporting multiple database backend
types and implemnts support for PostgreSQL. It also adds a function,
use_exclusive_service, which serves as a base for enabling a service
that conflicts with other services. The use_database function uses it,
and it might also be useful for selecting messaging backends.

MySQL is still selected by default. Tested on Fedora 17 and Ubuntu
12.04 with MySQL and PostgreSQL. Implements blueprint postgresql-support

Change-Id: I4b1373e25676fd9a9809fe70cb4a6450a2479174
2012-11-03 18:19:21 -04:00

71 lines
2.4 KiB
Plaintext

# lib/postgresql
# Functions to control the configuration and operation of the PostgreSQL database backend
# Dependencies:
# DATABASE_{HOST,USER,PASSWORD} must be defined
# Save trace setting
XTRACE=$(set +o | grep xtrace)
set +o xtrace
register_database postgresql
function recreate_database_postgresql {
local db=$1
local charset=$2
# Avoid unsightly error when calling dropdb when the database doesn't exist
psql -h$DATABASE_HOST -U$DATABASE_USER -dtemplate1 -c "DROP DATABASE IF EXISTS $db"
createdb -h $DATABASE_HOST -U$DATABASE_USER -l C -T template0 -E $charset $db
}
function configure_database_postgresql {
echo_summary "Configuring and starting PostgreSQL"
if [[ "$os_PACKAGE" = "rpm" ]]; then
PG_HBA=/var/lib/pgsql/data/pg_hba.conf
PG_CONF=/var/lib/pgsql/data/postgresql.conf
else
PG_DIR=`find /etc/postgresql -name pg_hba.conf|xargs dirname`
PG_HBA=$PG_DIR/pg_hba.conf
PG_CONF=$PG_DIR/postgresql.conf
fi
sudo [ -e /var/lib/pgsql/data ] || sudo postgresql-setup initdb
# Listen on all addresses
sudo sed -i "/listen_addresses/s/.*/listen_addresses = '*'/" $PG_CONF
# Do password auth from all IPv4 clients
sudo sed -i "/^host/s/all\s\+127.0.0.1\/32\s\+ident/$DATABASE_USER\t0.0.0.0\/0\tpassword/" $PG_HBA
# Do password auth for all IPv6 clients
sudo sed -i "/^host/s/all\s\+::1\/128\s\+ident/$DATABASE_USER\t::0\/0\tpassword/" $PG_HBA
start_service postgresql
# If creating the role fails, chances are it already existed. Try to alter it.
sudo -u postgres -i psql -c "CREATE ROLE $DATABASE_USER WITH SUPERUSER LOGIN PASSWORD '$DATABASE_PASSWORD'" || \
sudo -u postgres -i psql -c "ALTER ROLE $DATABASE_USER WITH SUPERUSER LOGIN PASSWORD '$DATABASE_PASSWORD'"
}
function install_database_postgresql {
echo_summary "Installing postgresql"
PGPASS=$HOME/.pgpass
if [[ ! -e $PGPASS ]]; then
cat <<EOF > $PGPASS
*:*:*:$DATABASE_USER:$DATABASE_PASSWORD
EOF
chmod 0600 $PGPASS
else
sed -i "s/:root:\w\+/:root:$DATABASE_PASSWORD/" $PGPASS
fi
if [[ "$os_PACKAGE" = "rpm" ]]; then
install_package postgresql-server
else
install_package postgresql
fi
}
function database_connection_url_postgresql {
local output=$1
local db=$2
eval "$output=$BASE_SQL_CONN/$db?client_encoding=utf8"
}
# Restore xtrace
$XTRACE