DiscoveryFailure exception in plugin setup is misleading

Bug #1738807 reported by Colleen Murphy on 2017-12-18
This bug affects 1 person
Affects Status Importance Assigned to Milestone

Bug Description

During plugin setup we catch DiscoveryFailure, HttpError, and ConnectionError and log a warning:

'Failed to discover available identity versions when contacting %s. Attempting to parse version from URL.' % self.auth_url

This points to a "discovery error", the meaning of which is completely unclear to the average user, and the reality is it could be a connection error related to a firewall rule or keystone not running or keystone running on the wrong port or other things that are easier to debug and understand than "discovery".

We also have this catch-all DiscoveryFailure raised here:

which is probably inappropriate.

We should make these warnings and errors more fine-grained so people understand what to look for when keystoneauth fails.

Colleen Murphy (krinkle) on 2018-02-14
tags: added: low-hanging-fruit
Colleen Murphy (krinkle) on 2018-10-29
Changed in keystoneauth:
status: New → Triaged
importance: Undecided → Medium
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