[Openstack] Install/Enable Quantum lbass (load balancer) feature?

Jake G. dj_dark_junglist at yahoo.com
Fri Aug 9 05:41:22 UTC 2013

I have enabled LBaas on my openstack, but after adding a pool, vip, members, and monitor successfully I am still unable to get load balancing working. 
I found this blog to help me so far http://kimizhang.wordpress.com/2013/08/08/openstack-grizzly-quantum-advanced-features-2/

When I run # ps -ef | grep haproxy I dont get much: 
root 27508 2718 0 14:16 pts/1 00:00:00 grep haproxy

My logs show an issue with haproxy:

Command: ['sudo', 'quantum-rootwrap', '/etc/quantum/rootwrap.conf', 'ip', 'netns', 'exec', 'qlbaas-e10951cd-4cca-4ba4-acc0-0ccde6817029', 'haproxy', '-f', '/var
/lib/quantum/lbaas/e10951cd-4cca-4ba4-acc0-0ccde6817029/conf', '-p', '/var/lib/quantum/lbaas/e10951cd-4cca-4ba4-acc0-0ccde6817029/pid']
Exit code: 255
Stdout: ''
Stderr: 'exec of haproxy failed: No such file or directory\n'
2013-08-09 14:16:17    ERROR [quantum.plugins.services.agent_loadbalancer.agent.manager] Unable to refresh device for pool: e10951cd-4cca-4ba4-acc0-0ccde6817029
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/quantum/plugins/services/agent_loadbalancer/agent/manager.py", line 189, in refresh_device
  File "/usr/lib/python2.6/site-packages/quantum/plugins/services/agent_loadbalancer/drivers/haproxy/namespace_driver.py", line 48, in create
  File "/usr/lib/python2.6/site-packages/quantum/plugins/services/agent_loadbalancer/drivers/haproxy/namespace_driver.py", line 70, in _spawn
  File "/usr/lib/python2.6/site-packages/quantum/agent/linux/ip_lib.py", line 414, in execute
  File "/usr/lib/python2.6/site-packages/quantum/agent/linux/utils.py", line 61, in execute
    raise RuntimeError(m)

Any ideas?

 From: Eugene Nikanorov <enikanorov at mirantis.com>
To: Jake G. <dj_dark_junglist at yahoo.com> 
Cc: "openstack at lists.openstack.org" <openstack at lists.openstack.org> 
Sent: Thursday, August 8, 2013 7:04 PM
Subject: Re: [Openstack] Install/Enable Quantum lbass (load balancer) feature?

Hi Jake,

Regarding lbaas in grizzly working on RHEL/Centos - it may be problematic as host operation system must support network namespaces. 
If you do have support for network namespaces then you need to do the following steps to setup lbaas service in quantum:

1) specify lbaas plugin in quantum.conf:
service_plugins= lbaas_plugin_classpath.
check quantum/plugins/services/agent_loadbalancer/plugin.py for correct path as currently the name and path has changed.

2) to enable lbaas service in horizon you need to do the following:
add the following piece of code to horizon/openstack_dashboard/local/local_settings.py :

    'enable_lb': False

3) start quantum-lbaas-agent on the host providing quantum.conf and lbaas-agent.ini. lbaas-agent.ini should reflect core plugin configuration (should have proper interface driver)

Note that if host os has no namespace support, all of above will work (e.g. REST API will be functional), but you would not be able to deploy loadbalancer as lbaas agent can only work with namespaces.


On Thu, Aug 8, 2013 at 1:14 PM, Jake G. <dj_dark_junglist at yahoo.com> wrote:

Hi all!
>How can we install/enable the Quantum-lbaas (load balancer) feature for Openstack Grizzly? I dont see any docs for RHEL/CentOS specific installs. 
>I used RDO to deploy Openstack on a single node.
>Thank you! Jake
>Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>Post to     : openstack at lists.openstack.org
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