Comment 3 for bug 1634486

Hello Sasikiran,

The endpoint you set using the env variable OS_AUTH_URL is the keystone endpoint to use for authentication by any service. So glance service will talk to that url (whatever you have set it to - internal/public/admin) every time it needs to. So when you set glance's endpoint to use internalURL, it means glance is talking to other services including keystone with its internal url.
glance-cache-manage would be picking up keystone's internal url to talk to as you have set it as your env variable. (By default, glance-cache-manage will talk to whatever is given for OS_AUTH_URL)
So if your glance-cache-manage command does not go through you need to check if your glance's endpoint that you have set as intenralURL (GLANCE_ENDPOINT_TYPE=internalURL) has it registered with keystone. Your other Glance commands might have worked because it was picking up the publicURL of glance to talk to keytsone's internalURL.