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<p class="MsoNormal"><span style="color:#1F497D">Allowing a user to be associated with multiple tenants (a.k.a. projects) is what we have currently, and it works reasonably well. It has not produced a significantly more complicated system.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I would argue the flipside of your point, which is that the admin permission system in keystone is particularly convoluted and not clearly scoped. The lack of differentiation between the abilities of a project
admin vs. a “system” admin, etc…. the fact that being granted admin permissions on *<b>any</b>* project gives you admin permissions for *<b>all</b>* of your Openstack installation… There are some very odd issues in the details of that side of the equation.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">All the best,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<![if !supportLists]><span style="color:#1F497D"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">Gabriel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> openstack-bounces+gabriel.hurley=nebula.com@lists.launchpad.net [mailto:openstack-bounces+gabriel.hurley=nebula.com@lists.launchpad.net]
<b>On Behalf Of </b>Caitlin Bestler<br>
<b>Sent:</b> Tuesday, May 29, 2012 10:18 AM<br>
<b>To:</b> openstack@lists.launchpad.net<br>
<b>Subject:</b> [Openstack] Identity API v3 - Why allow multi-tenant users?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">One of the major complication I see in the API is that users can be associated with multiple tenants.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What is the benefit of this? What functionality would be lost if a human user merely had to use a different account with each tenant?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There are numerous issues with multi-tenant users. For example, if a user is associated with multiple tenants, who resets the user’s password?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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