| #!/bin/sh |
| |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| # Configure a postgresql hot standby server |
| here=`echo "import os; print os.path.realpath('$0')" | python`; here=`dirname $here` |
| mkdir -p $1 |
| root=`echo "import os; print os.path.realpath('$1')" | python` |
| |
| # Server address |
| addr=$2 |
| if [ "$addr" = "" ]; then |
| ip="*" |
| port="5432" |
| else |
| ip=`$here/../../modules/http/httpd-addr ip $addr` |
| if [ "$ip" = "" ]; then |
| ip="*" |
| fi |
| port=`$here/../../modules/http/httpd-addr port $addr` |
| fi |
| |
| # Master server address |
| if [ "$3" = "" ]; then |
| mhost="localhost" |
| mport="5432" |
| mhttpport="80" |
| else |
| mhost="$3" |
| mport="$4" |
| mhttpport="$5" |
| fi |
| |
| pgsql_prefix=`cat $here/pgsql.prefix` |
| |
| if [ -f "$root/sqldb/log.conf" ]; then |
| pgsql_log=`cat $root/sqldb/log.conf` |
| else |
| mkdir -p $root/logs |
| pgsql_log="cat >>$root/logs/postgresql" |
| fi |
| |
| mkdir -p $root/sqldb/data |
| chmod 700 $root/sqldb/data |
| mkdir -p $root/sqldb/archive |
| |
| # Initialize from a backup of the master |
| if [ ! -f $root/sqldb/data/postgresql.conf ]; then |
| (wget http://$mhost:$mhttpport/pgsql-backup -O - | tar -C $root/sqldb -xz) 2>&1 | $pgsql_log |
| rm -rf $root/sqldb/data/postmaster.pid $root/sqldb/data/pg_xlog |
| mkdir -p $root/sqldb/data/pg_xlog/archive_status |
| chmod 700 $root/sqldb/data/pg_xlog/archive_status |
| fi |
| |
| # Generate server configuration |
| cp $root/sqldb/data/postgresql-init.conf $root/sqldb/data/postgresql.conf |
| cat >>$root/sqldb/data/postgresql.conf <<EOF |
| |
| # Generated by: standby-conf $* |
| |
| # Listen |
| listen_addresses = '$ip' |
| port = $port |
| |
| # Setup archival |
| archive_mode = on |
| archive_command = 'cp %p $root/sqldb/archive/%f' |
| |
| # Setup hot standby with streaming replication |
| wal_level = hot_standby |
| max_wal_senders = 5 |
| wal_keep_segments = 32 |
| |
| # Enable hot standby |
| hot_standby = on |
| |
| EOF |
| |
| # Generate recovery configuration |
| cat >$root/sqldb/data/recovery.conf << EOF |
| # Generated by: pgsql-slave-conf $* |
| |
| # Start in standby mode |
| standby_mode = 'on' |
| primary_conninfo = 'host=$mhost port=$mport' |
| |
| # Failover |
| trigger_file = '$root/sqldb/failover' |
| |
| restore_command = 'wget http://$mhost:$mhttpport/pgsql-archive/%f -O "%p"' |
| |
| EOF |
| |
| # Generate database backup script |
| mkdir -p $root/sqldb/scripts |
| cat >$root/sqldb/scripts/backup <<EOF |
| #!/bin/sh |
| $here/pgsql-backup $root localhost $port |
| EOF |
| chmod 700 $root/sqldb/scripts/backup |
| |
| # Configure HTTPD to serve backup and archive files |
| if [ -f "$root/conf/httpd.conf" ]; then |
| cat >>$root/conf/httpd.conf <<EOF |
| # Generated by: pgsql-conf $* |
| |
| # Serve PostgreSQL backup and WAL archive files |
| ScriptAlias /pgsql-backup "$root/sqldb/scripts/backup" |
| Alias /pgsql-archive "$root/sqldb/archive" |
| |
| EOF |
| |
| fi |
| |