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Hi Janki,

Thanks.

dnsmasq is already installed on all nodes, probably as a dependency. Which leads me to the question why neutron-dhcp-agent
doesn'st start dnsmasq…

Regards,

	Uwe


> Hi Uwe
> 
> When I initially started, my setup was on Ubuntu 14.04 (bare machines) 3 node OPenStack Icehouse architecture. The guide didnot
> say anything about installing dnsmasq. Then, the VMs were not getting IPs. I then installed dnsmasq (sudo apt-get install dnsmasq)
> in Neutron node and the issue was solved.
> 
> I think you should first try without installing it and everything works fine then its good. Or else install dnsmasq on Neutron node.
> 
> Janki Chhatbar
> M.Tech (Embedded Systems), Nirma University
> Intern, e-Infochips Pvt. Ltd.
> (+91) 9409239106
> 
> On Fri, Jun 12, 2015 at 5:05 PM, Uwe Sauter <uwe.sauter.de at gmail.com <mailto:uwe.sauter.de at gmail.com>> wrote:
> 
>     Hi,
> 
>     == TL;DR ==
>     Which neutron service manages the DNSMASQ processes? Does this run on the controller node or the networking node?
> 
> 
>     == Long story ==
>     I have a five node Juno installation (1 controller, 1 storage, 1 network and 2 compute nodes).
> 
>     I followed the Juno Red Hat installation guide [1] up to the point where the dashboard was installed, making modifications where
>     necessary to account for the additional nodes. I'm using Neutron / ML2 as networking component with GRE tenant networks.
> 
>     I am able to sucessfully start a Cirros VM but that instance won't get an IP address. To resolve this I followed a link [2] that
>     told to add logging to dnsmasq. Here the relevant parts on the *network* node:
> 
>     /etc/neutron/dhcp_agent.ini
>     [DEFAULT]
>     interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
>     dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
>     use_namespaces = True
>     dhcp_delete_namespaces = True
>     verbose = True
>     dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf
> 
> 
>     /etc/neutron/dnsmasq-neutron.conf
>     dhcp-option-force=26,1454
>     log-facility = /var/log/neutron/dnsmasq.log
>     log-dhcp
> 
> 
>     Then I realized that there were no dnsmasq processes on the networking node but only on the controller node. Is this correct? I
>     was under the impression that neutron-dhcp-agent (running on the networking node) is the service that maintains DHCP on the tenant
>     networks.
> 
>     So the question is:
>     Which service manages dnsmasq and on which node should that run on?
> 
> 
>     Thanks,
> 
>             Uwe
> 
>     [1] http://docs.openstack.org/juno/install-guide/install/yum/content/
>     [2] https://ask.openstack.org/en/question/63110/unable-to-get-dhcp-lease-in-juno/
> 
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