/etc/glance/policy.json is in glance-api 2012.1.3+stable~20120821-120fcf-0ubuntu1.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | {
"default": [],
"manage_image_cache": [["role:admin"]]
}
|