Error: Unable to retrieve the flavors.

[XuRong]

devstack, When I click on the button "Launch Instance",there is an error: Unable to retrieve the flavors.

[Syed Ahsan Shamim Zaidi (ahsanmohsin04)]

Seems like there is a miss between Nova and keystone authentication, since keystone talks to nova to get those.

Are you getting a 401 unauthorized ? In that case you might need to check the logs to nova and keystone

[Syed Ahsan Shamim Zaidi (ahsanmohsin04)]

Also try to run rejoin-stack.sh, maybe that might help

[Bernd Bausch (berndbausch)]

I am getting the same error from a devstack I just created. As demo user and admin user, whenever I bring up a launch instance dialog from the instance page or the images page, I get this error message.

No problem when using the CLI "openstack flavor list". As admin, in the Admin->flavors page in Horizon, I see all flavors as well.

Under /var/log/apache2, I find no error around the time I try to launch the instance. horizon_error.log does mention cookies being too large and recommends switching to "file or database-backed sessions". I don't know how to do that, though. It also has a warning:

oslo_policy.policy:Policies ['update_rbac_policy:target_tenant'] are part of a cyclical reference

Where should I look for errors?

[Bernd Bausch (berndbausch)]

Another bit of information: n-api.log shows a number of GETs - os-availability-zone, os-keypairs, limits and os-server-groups. There seems to be no attempt from Horizon to get the list of flavors, however.

[Launchpad Janitor (janitor)]

[Expired for devstack because there has been no activity for 60 days.]

[Aravind (a4aravind)]

I too got the same error from devstack, not able to launch an instance. I'm not getting anything listed under flavors and finally there's an Error:Unable to retrieve the flavors. Since adding the flavor is mandatory I'm not able to move ahead.
Please note that under Admin->Flavors, I see all the flavors listed

Any fix or workaround for this, please ?

[james wangjz (wangjz)]

i got the same error,but not got the error from the start when i use the dashboard.
i used the dashboard without any error when i finished install the openstack enviroment.
i got the error when i launch the instance after i delete the instances、network、router and created the new network and router.
i compared the keystone_access.log with another normal enviroment,it lost the api request about flavor.

the correct api request about flavor is like this:
192.168.1.159 - - [02/Mar/2017:17:55:13 +0800] "GET /dashboard/api/nova/flavors/?get_extras=true&is_public=true HTTP/1.1" 200 4704 "http://172.24.4.168/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36"

and there was no any flavor request in the wrong enviroment:
192.168.1.159 - - [02/Mar/2017:17:51:08 +0800] "GET /dashboard/api/keystone/user-session/ HTTP/1.1" 200 601 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:08 +0800] "GET /dashboard/api/keystone/svc-catalog/ HTTP/1.1" 200 4158 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:08 +0800] "GET /dashboard/api/settings/ HTTP/1.1" 200 456 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:08 +0800] "GET /dashboard/api/nova/keypairs/ HTTP/1.1" 200 13 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:08 +0800] "GET /dashboard/api/nova/availzones/ HTTP/1.1" 200 82 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:09 +0800] "GET /dashboard/api/nova/limits/?reserved=true HTTP/1.1" 200 476 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:09 +0800] "GET /dashboard/api/network/securitygroups/ HTTP/1.1" 200 3855 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:08 +0800] "POST /dashboard/api/policy/ HTTP/1.1" 200 17 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:08 +0800] "POST /dashboard/api/policy/ HTTP/1.1" 200 17 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:09 +0800] "GET /dashboard/api/nova/extensions/ HTTP/1.1" 200 22695 "http://172.24.4.100/dashboard/project/instances/" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"
192.168.1.159 - - [02/Mar/2017:17:51:09 +0800] "GET /dashboard/api/cinder/volumesnapshots/?status=available HTTP/1.1" 200 13 "http:/...

[Michael (aserak)]

I had the issue with IE, while Edge worked.