<p dir="ltr">Adam, that should be fixed by <a href="https://review.openstack.org/#/c/341354/">https://review.openstack.org/#/c/341354/</a> which merged not too many days ago. Before that commit we had another configuration which was already deprecated in keystone upstream. </p>
<div class="gmail_extra"><br><div class="gmail_quote">On 6 Aug 2016 05:04, "Adam Young" <<a href="mailto:ayoung@redhat.com">ayoung@redhat.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>On 08/05/2016 06:40 PM, Fox, Kevin M
wrote:<br>
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<div style="direction:ltr"><font color="#000000" face="Tahoma" size="2"><b>From:</b> Adam
Young [<a href="mailto:ayoung@redhat.com" target="_blank">ayoung@redhat.com</a>]<br>
<b>Sent:</b> Friday, August 05, 2016 3:06 PM<br>
<b>To:</b> <a href="mailto:openstack-dev@lists.openstack.org" target="_blank">openstack-dev@lists.openstack.org</a><br>
<b>Subject:</b> Re: [openstack-dev] [keystone][tripleo]
Federation, mod_mellon, and HA Proxy<br>
</font><br>
</div>
<div>
<div>On 08/05/2016 04:54 PM, Adam
Young wrote:<br>
</div>
<blockquote type="cite">On 08/05/2016 04:52 PM, Adam Young
wrote: <br>
<blockquote type="cite">Today I discovered that we need
to modify the HA proxy config to tell it to rewrite
redirects. Otherwise, I get a link to
<br>
<br>
<a href="http://openstack.ayoung-dell-t1700.test:5000/v3/mellon/postResponse" target="_blank">http://openstack.ayoung-dell-t1700.test:5000/v3/mellon/postResponse</a>
<br>
<br>
<br>
Which should be https, not http. <br>
<br>
<br>
I mimicked the lines in the horizon config so that the
keystone section looks like this:
<br>
<br>
<br>
listen keystone_public <br>
bind <a href="http://10.0.0.4:13000" target="_blank">10.0.0.4:13000</a> transparent ssl crt
/etc/pki/tls/private/overcloud_endpoint.pem
<br>
bind <a href="http://172.16.2.5:5000" target="_blank">172.16.2.5:5000</a> transparent <br>
mode http <br>
redirect scheme https code 301 if { hdr(host) -i
10.0.0.4 } !{ ssl_fc } <br>
rsprep ^Location:\ <a href="http://UrlBlockedError.aspx" target="_blank">
http://(.*)</a> Location:\ https://\1 <br>
http-request set-header X-Forwarded-Proto https if {
ssl_fc } <br>
http-request set-header X-Forwarded-Proto http if !{
ssl_fc } <br>
server overcloud-controller-0 <a href="http://172.16.2.8:5000" target="_blank">172.16.2.8:5000</a> check
fall 5 inter 2000 rise 2 <br>
server overcloud-controller-1 <a href="http://172.16.2.6:5000" target="_blank">172.16.2.6:5000</a> check
fall 5 inter 2000 rise 2 <br>
server overcloud-controller-2 <a href="http://172.16.2.9:5000" target="_blank">172.16.2.9:5000</a> check
fall 5 inter 2000 rise 2 <br>
<br>
And.. it seemed to work the first time, but not the
second. Now I get <br>
<br>
"Secure Connection Failed <br>
<br>
The connection to
openstack.ayoung-dell-t1700.test:5000 was interrupted
while the page was loading."
<br>
<br>
Guessing the first success was actually a transient
error. <br>
<br>
So it looks like my change was necessary but not
sufficient. <br>
<br>
This is needed to make mod_auth_mellon work when
loaded into Apache, and Apache is running behind HA
proxy (Tripleo setup).
<br>
<br>
<br>
There is no SSL setup inside the Keystone server, it
is just doing straight HTTP. While I'd like to change
this long term, I'd like to get things working this
way first, but am willing to make whatever changes are
needed to get SAML and Federation working soonest. <br>
<br>
<br>
<br>
<br>
</blockquote>
Ah...just noticed the redirect is to :5000, not port
:13000 which is the HA Proxy port.
<br>
</blockquote>
<br>
OK, this is due to the SAML request:<br>
<br>
<br>
<pre><samlp:AuthnRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"
ID="_5089011BEBD0F6B82074F67E904F598D"
Version="2.0"
IssueInstant="2016-08-05T21:55:18Z"
Destination=<a href="https://identity.ayoung-dell-t1700.test/auth/realms/openstack/protocol/saml" target="_blank">"https://identity.ayoung-dell-t1700.test/auth/realms/openstack/protocol/saml"</a>
Consent="urn:oasis:names:tc:SAML:2.0:consent:current-implicit"
ForceAuthn="false"
IsPassive="false"
AssertionConsumerServiceURL=<a href="https://openstack.ayoung-dell-t1700.test:5000/v3/mellon/postResponse" target="_blank">"https://openstack.ayoung-dell-t1700.test:5000/v3/mellon/postResponse"</a>
>
<saml:Issuer><a href="https://openstack.ayoung-dell-t1700.test:5000/v3/mellon/metadata" target="_blank">https://openstack.ayoung-dell-t1700.test:5000/v3/mellon/metadata</a></saml:Issuer>
<samlp:NameIDPolicy Format="urn:oasis:names:tc:SAML:2.0:nameid-format:transient"
AllowCreate="true"
/>
</samlp:AuthnRequest>
</pre>
<br>
My guess is HA proxy is not passing on the proper, and the
mod_auth_mellon does not know to rewrite it from 5000 to
13000<br>
<br>
</div>
</div>
</div>
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</blockquote>
<br>
"rewriting is more expensive then getting the web server to return
the right prefix. Is that an option? Usually its just a bug that
needs a minor patch to fix.<br>
<br>
Thanks,<br>
Kevin"<br>
<br>
<br>
Well, I think in this case, the expense is not something to worry
about: SAML is way more chatty than normal traffic, and the rewrite
won't be a drop a in the bucket.<br>
<br>
I think the right thing to do is to get HA proxy top pass on the
correct URL, including the port, to the backend, but I don't think
it is done in the rsprep directive. As John Dennis pointed out to
me, the mod_auth_mellon code uses the apache
ap_construct_url(r->pool, cfg->endpoint_path, r) where r is
the current request record. And that has to be passed from HA proxy
to Apache.<br>
<br>
HA proxy is terminating SSL, and then calling Apache via <br>
<br>
<br>
server overcloud-controller-0 <a href="http://172.16.2.8:5000" target="_blank">172.16.2.8:5000</a> check fall 5 inter
2000 rise 2<br>
and two others. Everything appears to be properly translated except
the port.<br>
<br>
<br>
<br>
<br>
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