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There is already an account associated with that email address using a sign in method other than gitlab.
Summary
Previous gitlab credentials that were deleted and recreated are preventing new gitlab credentials from being used with mattermost.
Steps to reproduce
- Create an account with username and password (through IPA in this case)
- Login to Gitlab with those credentials
- Login to Mattermost
- Delete Gitlab account for user
- Delete Account (through IPA)
- Create new account with same username and with a password (through IPA again)
- Login to Gitlab
- Login to Mattermost
Expected behavior
Login to Mattermost with Gitlab credentials
Observed behavior
Unable to login and error message There is already an account associated with that email address using a sign in method other than gitlab.
System Log has the following: [2017/02/02 09:33:53 UTC] [EROR] /signup/gitlab/complete:CreateOAuthUser code=500 rid=gcfck674fef18bcbq5wj9wekjc uid= ip=10.10.0.4 There is already an account associated with that email address using a sign in method other than gitlab. Please sign in using gitlab. [details: email=dan@contesa.org]
Possible fixes
Add a feature in System Console to remove users or include a Mattermost CLI in the build