How did you install Glance? devstack or manullay? If it's not a production environment, I would suggest you install it with devstack. Seems there are something wrong with your glance-api-paste.ini. Did you ever change it?
How did you install Glance? devstack or manullay? If it's not a production environment, I would suggest you install it with devstack. Seems there are something wrong with your glance- api-paste. ini. Did you ever change it?