Comment 0 for bug 1717615

We came across a situation where we were unable to view resources in a stack inside Horizon. We traced it down to a communication problem with the Heat Apache frontend and Heat. After adjusting the log level for Apache, we came across the following error in the logs:

[client 213.173.193.177:33920] AH00026: found %2f (encoded '/') in URI (decoded='/v1/c064a39d602d4f42bc49e09057c97683/stacks/heat_test_foo/b5c125a3-d452-49a1- a12e-03e098fbb38c/resources/foo_vm-01'), returning 404

As a workaround, we currently added the following line to the /etc/apache/sites-enabled/openstack-https_frontend.conf on our Heat instance:

AllowEncodedSlashes On

It is worth noting we tried to use the NoDecode option as well and that is didn't resolve the problem.