Open Stack

We use the memcached set up. It works well across horizon restarts (as we needed to do regular restarts of horizon until we found the fix at https://bugs.launchpad.net/python-novaclient/+bug/1247056 for the file descriptor leak).

Tim

From: George Shuklin [mailto:george.shuklin at gmail.com]
Sent: 27 February 2014 20:36
To: openstack-operators at lists.openstack.org
Subject: Re: [Openstack-operators] OpenStack Dashboard in HA

Is the cookie storage is not enough? For me it works fine without any shared storage between dashboards.
On 02/27/2014 08:08 PM, Scott Devoid wrote:
You need some way to address HTTP sessions. Otherwise you will be randomly logged out if your request goes to a different dashboard host than the one you logged in on. One way is to set up a shared memcached cluster that each dashboard host talks to--configure the "CACHE" setting in the local_settings.py file. [1] Another way is to configure your load balancer with session stickiness/affinity.

[1] https://github.com/openstack/horizon/blob/master/openstack_dashboard/local/local_settings.py.example



On Wed, Feb 26, 2014 at 12:11 PM, matt <matt at nycresistor.com<mailto:matt at nycresistor.com>> wrote:
As horizon interfaces with OpenStack via the client apis primarily...
should be as simple as deploying several instances and load balancing between them properly.

On Wed, Feb 26, 2014 at 10:54 AM, Alvise Dorigo <alvise.dorigo at pd.infn.it<mailto:alvise.dorigo at pd.infn.it>> wrote:
Hi,
I've read all the guide http://docs.openstack.org/high-availability-guide/high-availability-guide.pdf, but it seems that the HA configuration for the Dashboard is not covered.

I wonder if it is worth to do it, or it is not treated because the Dashboard is a simple stateless service which can just be "mirrored" on another node without any particular setup.

Could someone clarify ?

many thanks!

Alvise

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