cb26a66845
Keystone supports configuration of an admin_port and a public_port. Change-Id: I130a3e95bd9b84124ebede3210f8887e79b76946 Closes-Bug: #1250292
98 lines
3.4 KiB
Plaintext
98 lines
3.4 KiB
Plaintext
[[s-keystone]]
|
|
==== Highly available OpenStack Identity
|
|
|
|
OpenStack Identity is the Identity Service in OpenStack and used by many services.
|
|
Making the OpenStack Identity service highly available in active / passive mode involves
|
|
|
|
* configuring OpenStack Identity to listen on the VIP address,
|
|
* managing OpenStack Identity daemon with the Pacemaker cluster manager,
|
|
* configuring OpenStack services to use this IP address.
|
|
|
|
NOTE: Here is the http://docs.openstack.org/trunk/install-guide/install/apt/content/ch_installing-openstack-identity-service.html[documentation] for installing OpenStack Identity service.
|
|
|
|
|
|
===== Adding OpenStack Identity resource to Pacemaker
|
|
|
|
First of all, you need to download the resource agent to your system :
|
|
|
|
----
|
|
cd /usr/lib/ocf/resource.d
|
|
mkdir openstack
|
|
cd openstack
|
|
wget https://raw.github.com/madkiss/openstack-resource-agents/master/ocf/keystone
|
|
chmod a+rx *
|
|
----
|
|
|
|
You may now proceed with adding the Pacemaker configuration for
|
|
OpenStack Identity resource. Connect to the Pacemaker cluster with +crm
|
|
configure+, and add the following cluster resources:
|
|
|
|
----
|
|
include::includes/pacemaker-keystone.crm[]
|
|
----
|
|
|
|
This configuration creates +p_keystone+, a resource for manage OpenStack Identity service.
|
|
|
|
+crm configure+ supports batch input, so you may copy and paste the
|
|
above into your live pacemaker configuration, and then make changes as
|
|
required. For example, you may enter +edit p_ip_keystone+ from the
|
|
+crm configure+ menu and edit the resource to match your preferred
|
|
virtual IP address.
|
|
|
|
Once completed, commit your configuration changes by entering +commit+
|
|
from the +crm configure+ menu. Pacemaker will then start the OpenStack Identity
|
|
service, and its dependent resources, on one of your nodes.
|
|
|
|
===== Configuring OpenStack Identity service
|
|
|
|
You need to edit your OpenStack Identity configuration file (+keystone.conf+) and change the bind parameters :
|
|
|
|
On Havana:
|
|
----
|
|
bind_host = 192.168.42.103
|
|
----
|
|
|
|
On Icehouse, the +admin_bind_host+ option lets you use a private network for the admin access.
|
|
----
|
|
public_bind_host = 192.168.42.103
|
|
admin_bind_host = 192.168.42.103
|
|
----
|
|
|
|
To be sure all data will be high available, you should be sure that you store everything in the MySQL database (which is also high available) :
|
|
----
|
|
[catalog]
|
|
driver = keystone.catalog.backends.sql.Catalog
|
|
...
|
|
[identity]
|
|
driver = keystone.identity.backends.sql.Identity
|
|
...
|
|
----
|
|
|
|
|
|
===== Configuring OpenStack Services to use High Available OpenStack Identity
|
|
|
|
Your OpenStack services must now point their OpenStack Identity configuration to
|
|
the highly available, virtual cluster IP address -- rather than a
|
|
OpenStack Identity server's physical IP address as you normally would.
|
|
|
|
For example with OpenStack Compute, if your OpenStack Identity service IP address is
|
|
192.168.42.103 as in the configuration explained here, you would use
|
|
the following line in your API configuration file
|
|
(+api-paste.ini+):
|
|
|
|
----
|
|
auth_host = 192.168.42.103
|
|
----
|
|
|
|
You need also to create the OpenStack Identity Endpoint with this IP.
|
|
|
|
NOTE : If you are using both private and public IP addresses, you should create two Virtual IP addresses and define your endpoint like this :
|
|
----
|
|
keystone endpoint-create --region $KEYSTONE_REGION --service-id $service-id --publicurl 'http://PUBLIC_VIP:5000/v2.0' --adminurl 'http://192.168.42.103:35357/v2.0' --internalurl 'http://192.168.42.103:5000/v2.0'
|
|
----
|
|
|
|
If you are using the Horizon Dashboard, you should edit +local_settings.py+ file :
|
|
----
|
|
OPENSTACK_HOST = 192.168.42.103
|
|
----
|