Index: ext/cli/delete-reports
--- ext/cli/delete-reports.orig
+++ ext/cli/delete-reports
@@ -5,7 +5,7 @@ set -e
 pdb_db_name=puppetdb
 pg_port=5432
 
-pg_user=postgres
+pg_user=_postgresql
 psql_cmd=psql
 
 
@@ -76,7 +76,7 @@ chown "$pg_user:$pg_user" "$tmp_dir"
 # Verify that the PuppetDB schema version it the expected value
 # so that we do not incorrectly delete the report data.
 expected_schema_ver=80
-su - "$pg_user" -s /bin/sh -c "$psql_cmd -p $pg_port -d $pdb_db_name -c 'COPY ( SELECT max(version) FROM schema_migrations ) TO STDOUT;' > $tmp_dir/schema_ver"
+su - -s /bin/sh "$pg_user" -c "$psql_cmd -p $pg_port -d $pdb_db_name -c 'COPY ( SELECT max(version) FROM schema_migrations ) TO STDOUT;' > $tmp_dir/schema_ver"
 actual_schema_ver="$(cat "$tmp_dir/schema_ver")"
 if test "$actual_schema_ver" -ne $expected_schema_ver; then
   printerr "Current schema version '${actual_schema_ver}' does not match the expected version '$expected_schema_ver'."
@@ -102,4 +102,4 @@ DELETE
 
 chown "$pg_user:$pg_user" "$tmp_dir/delete_reports.sql"
 
-su - "$pg_user" -s /bin/sh -c "$psql_cmd -p $pg_port -d $pdb_db_name -f $tmp_dir/delete_reports.sql >&2"
+su - "$pg_user" -c "$psql_cmd -p $pg_port -d $pdb_db_name -f $tmp_dir/delete_reports.sql >&2"