On 8/24/14, 12:10 AM, "Clint Byrum" <cl...@fewbar.com> wrote:
>Excerpts from Marcus White's message of 2014-08-23 21:17:24 -0700: >> Thank you Clint, had some follow up questions inline:) >> >> On Sun, Aug 24, 2014 at 12:12 AM, Clint Byrum <cl...@fewbar.com> wrote: >> > Excerpts from Marcus White's message of 2014-08-23 09:55:24 -0700: >> >> Hello, >> >> I had some keystone and Horizon questions, would apprecite it if >> >> anyone can help:-) >> >> >> >> a. Does Keystone run as a service scaled across multiple nodes? Since >> >> it would need access to shared data, I dont understand how it scales. >> >> >> > >> > It stores data in various backends. The default is SQL, and many use >> > LDAP to link with existing ID stores. >> > >> > It runs as a REST API in front of those data backends, and scales out >> > quite nicely like any other web application. >> >> For SQL, if SQL runs on Keystone with every node, how is the data on >> all nodes synchronized? Does the SQL server run externally as a >> service? I read somewhere that SQL runs with keystone hence the >> qstion. >> > >You read something false. The reality is it uses "sqlalchemy", so people >use MySQL, DB2, and Postgres, to name a few I've seen bug reports for. > >Many organizations using MySQL/MariaDB with OpenStack use Galera >synchronous replication to allow HA and read scaling (writes are sent >to all nodes). > >> > >> >> b. If it does not run on multiple nodes as a service, how can it >> >> handle a large number of concurrent requests? >> >> >> >> c. Is it expected to be a service that is exposed to the clients on a >> >> public cloud? Does Rackspace today do it or any other public cloud? >> >> >> > >> > Yes it is expected to be exposed. Users authenticate to keystone and >>are >> > given a token which can be used to grant access to the other OpenStack >> > services. >> > >> >> Some horizon questions also >> >> >> >> a. Does Horizon allow customization for specific services? Is there >> >> any way to add value on top of it for my own Nova or Swift or Cinder >> >> view, can I do that or is it whatever is done by the community the >> >> only thing available? >> >> >> > >> > It's open source. Go wild. ;) I believe there are hooks for >> > skins/themes, and one can add plugins for other functionality. >> Can I change the full view of how the Nova part or Cinder part of >> Swift part looks completely and even present a different set of data? >> Horizon is designed to be extended and adapted. All that you have asked is certainly possible without too much work other than generating the new content.. Please see http://docs.openstack.org/developer/horizon/topics/tutorial.html for some pointers. -David >I Really don't know. We've reached the end of my knowledge of Horizon. > >_______________________________________________ >Mailing list: >http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >Post to : openstack@lists.openstack.org >Unsubscribe : >http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
