Doing some further testing, port 8775 is not open int he namespace. But it is open on the compute host.
a curl to http://<compute-with-namespace>:8775 provides:
1.0 2007-01-19 2007-03-01 2007-08-29 2007-10-10 2007-12-15 2008-02-01 2008-09-01 2009-04-04 latest
So there's a rule missing or a service not running to allow reaching the metadata running on the compute host that holds the namespace
Doing some further testing, port 8775 is not open int he namespace. But it is open on the compute host.
a curl to http://<compute- with-namespace> :8775 provides:
1.0
2007-01-19
2007-03-01
2007-08-29
2007-10-10
2007-12-15
2008-02-01
2008-09-01
2009-04-04
latest
So there's a rule missing or a service not running to allow reaching the metadata running on the compute host that holds the namespace