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Hi i am vigneshvar.a.s

A little more investigation and debugging on the error, i found that it is not trying to download image from glance, instead with new implementation of swift temp url for downloading the images.

What it does is, a temporary url is created (with short life time) inorder to download image from glance (via swift). Most important is this url does not require any authentication. Problem here is for some reason, the swift temp url is not accessible. In keystone middleware log and swift log we can find authentication related errors.

I am trying to investigate further.

To confirm if you are facing similar issue, please check at the config file /etc/ironic/ironic.conf and search for "swift_temp_url_duration". If it is configured, then you hit the same issue as mine.

Hope this helps.