The 411 error may actually be instructive. I would try applying this fix and see if it fixes things:
https://review.openstack.org/#/c/37046/2/openstack_dashboard/api/swift.py https://bugs.launchpad.net/horizon/+bug/1200534
Otherwise, might be a network issue. I would try using swiftclient directly from the Horizon server to check that.
Alternatively, we replaced nginx with Pound on our swift cluster a while ago and it has worked well for us.
The 411 error may actually be instructive. I would try applying this fix and see if it fixes things:
https:/ /review. openstack. org/#/c/ 37046/2/ openstack_ dashboard/ api/swift. py /bugs.launchpad .net/horizon/ +bug/1200534
https:/
Otherwise, might be a network issue. I would try using swiftclient directly from the Horizon server to check that.
Alternatively, we replaced nginx with Pound on our swift cluster a while ago and it has worked well for us.