No particular reason except that is what libvirt uses by default and it is easy to modify.
Vish On Feb 19, 2013, at 11:51 AM, Diego Parrilla Santamaría <diego.parrilla.santama...@gmail.com> wrote: > Thanks Vish, > > This is something I always forget to ask: I'm curious about the historical > reasons for dnsmasq instead of ISC-DHCP managed with OMAPI, for example. > > Cheers > Diego > > -- > Diego Parrilla > CEO > www.stackops.com | diego.parri...@stackops.com | +34 649 94 43 29 | > skype:diegoparrilla > > > > > > On Tue, Feb 19, 2013 at 8:37 PM, Vishvananda Ishaya <vishvana...@gmail.com> > wrote: > You cannot have an external dhcp server with openstack. Openstack needs a way > to know the ip address assigned to a vm to do its listing properly. If you > don't care about the api returning valid ips there is a possibility of using > FlatNetworking (not FlatDHCP) to make nova stick the network into a bridge > and not do any dhcp at all. You could then have an external server serving up > dhcp ips. I suspect you will probably have to disable security groups > completely using NoopFirewallDriver driver to get this to work. > > As to the reason dhcp-host is not working, I suspect is because we give > dnsmasq an external hosts file so you probably would need the host directive > there. > > Vish > > On Feb 19, 2013, at 4:44 AM, Ritesh Nanda <riteshnand...@gmail.com> wrote: > >> Hope Vish can answer this , what can be the way around to do this. >> >> On Tue, Feb 19, 2013 at 2:01 PM, Razique Mahroua <razique.mahr...@gmail.com> >> wrote: >> Hi, >> I'm not sure the "dhcp-host" configuration option exists actually. As for >> having one another host in VLAN mode is something I'd be interested to know >> as well >> >> Regards, >> >> Razique Mahroua - Nuage & Co >> razique.mahr...@gmail.com >> Tel : +33 9 72 37 94 15 >> >> <NUAGECO-LOGO-Fblan_petit.jpg> >> >> Le 19 févr. 2013 à 08:05, Ritesh Nanda <riteshnand...@gmail.com> a écrit : >> >>> Hello , >>> >>> Is it possible to use external dhcp server , instead of dnsmasq . >>> I am using openstack essex, with vlan manager as network, I have a need >>> where i need to implement dynamic dns, >>> so using dhcp3 as dhcp-server and bind9 as dns is possible. >>> >>> Or is there any way in openstack i can implement dynamic dns in openstack. >>> >>> One more problem which i am facing , dnsmasq has a option to assign static >>> ip to a particular hostname using dhcp-host >>> parameter in dnsmasq config file. >>> >>> i tried it doing by defining the config file of dnsmasq in nova.conf >>> >>> --dnsmasq_config_file=/etc/nova/dnsmasq.conf >>> >>> then in dnsmasq config file >>> >>> i gave options for a particular subnet. >>> >>> >>> dhcp-range=Tenant-operator,10.0.50.3,10.0.50.254,255.255.255.0,24h >>> dhcp-option=Tenant-operator,6,10.0.50.7 >>> domain=operator.com,10.0.50.0/24,local >>> dhcp-host=importantmachine,10.0.50.120 >>> >>> these all options are working except dhcp-host. >>> >>> Can anybody help me with this. >>> -- >>> With Regards >>> Ritesh Nanda >>> >>> >>> >>> _______________________________________________ >>> Mailing list: https://launchpad.net/~openstack >>> Post to : openstack@lists.launchpad.net >>> Unsubscribe : https://launchpad.net/~openstack >>> More help : https://help.launchpad.net/ListHelp >> >> >> >> >> -- >> With Regards >> Ritesh Nanda >> >> >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~openstack >> Post to : openstack@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~openstack >> More help : https://help.launchpad.net/ListHelp > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > >
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