Hello, I currently have OpenStack manually deployed by following the official install documentation, but I have faced a weird situation. When I send an api request to placement api service using the following command: *curl -H "X-Auth-Token: $T" http://controller:8778 <http://controller:8778>* I received a status code of "*200*", which indicates a successful operation. But, when I issue the following request: *curl -H "X-Auth-Token: $T" http://controller:8778/resource_providers <http://controller:8778/resource_providers> * I received a status code of "*503*", and when I checked the logs of placement and keystone, they say that the authentication failed. For the same reason, nova-compute can't register itself as a resource provider. I'm sure that the authentication credentials for placement are set properly, but I don't know what's the problem. Any suggestions, please? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-discuss/attachments/20210415/8bb7d723/attachment.html>