postgresql: Added postgresql::server::backup class for database backups.

postgresql/templates/pgsql-backup.erb

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+umask 077
+
+if [ `whoami` != postgres ]; then
+    echo "ERR: Script needs to be run as postgres user" 1>&2
+    exit 1
+fi
+
+DESTDIR="<%= @datadir %>"
+MAXAGE="<%= @maxage %>"
+
+DATE=`date "+%Y-%m-%d"`
+
+if [ ! -d ${DESTDIR} ]; then
+    echo "ERR: PostgreSQL backup directory [${DESTDIR}] does not exist" 1>&2
+    exit 1
+fi
+
+cd ${DESTDIR} && {
+    find . -xdev -mindepth 2 -maxdepth 2 -type f -mtime +7 -execdir rm -f -- {} \;
+    find . -xdev -depth -mindepth 1 -maxdepth 1 -type d -empty -execdir rmdir -- {} \;
+}
+
+DESTDIR=${DESTDIR}/${DATE}
+mkdir -p ${DESTDIR}
+
+for db in `psql -l -t | sed -n 's/^ \([^ ]\+\) .*/\1/p'`; do
+    case ${db} in
+        template*)
+            continue
+            ;;
+    esac
+    pg_dump ${db} | gzip > ${DESTDIR}/${db}.${DATE}.gz 
+done