Re: [openstack-dev] [Ironic] New dhcp provider using isc-dhcp-server
Hi Ionut, I am working on a similar effort: Adding driver for neutron-dhcp-agent [1] & [2]. Is it similar to what you are trying to do? My approach doesn't need any extra database. There are two ways to achieve HA in my case: 1. Run multiple neutron-dhcp-agents and set agents_per_network >1 so more than one dhcp servers will have the config needed to serve the dhcp request 2. ISC-DHCPD itself has some HA where you can setup peers. But I haven't tried that yet. I have this driver fully implemented and working here at Yahoo!. Working on making it more generic and upstreaming it. Please let me know if this effort is similar so that we can consider working together on a single effort. [1] https://review.openstack.org/#/c/212836/ [2] https://bugs.launchpad.net/neutron/+bug/1464793 On Thu, Sep 24, 2015 at 9:40 AM, Dmitry Tantsur wrote: > 2015-09-24 17:38 GMT+02:00 Ionut Balutoiu < > ibalut...@cloudbasesolutions.com>: > >> Hello, guys! >> >> I'm starting a new implementation for a dhcp provider, >> mainly to be used for Ironic standalone. I'm planning to >> push it upstream. I'm using isc-dhcp-server service from >> Linux. So, when an Ironic node is started, the ironic-conductor >> writes in the config file the MAC-IP reservation for that node and >> reloads dhcp service. I'm using a SQL database as a backend to store >> the dhcp reservations (I think is cleaner and it should allow us >> to have more than one DHCP server). What do you think about my >> implementation ? >> > > What you describe slightly resembles how ironic-inspector works. It needs > to serve DHCP to nodes that are NOT know to Ironic, so it manages iptables > rules giving (or not giving access) to the dnsmasq instance. I wonder if we > may find some common code between these 2, but I definitely don't want to > reinvent Neutron :) I'll think about it after seeing your spec and/or code, > I'm already looking forward to them! > > >> Also, I'm not sure how can I scale this out to provide HA/failover. >> Do you guys have any idea ? >> >> Regards, >> Ionut Balutoiu >> >> __ >> OpenStack Development Mailing List (not for usage questions) >> Unsubscribe: >> openstack-dev-requ...@lists.openstack.org?subject:unsubscribe >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >> > > > > -- > -- > -- Dmitry Tantsur > -- > > __ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > __ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Re: [openstack-dev] [Ironic] New dhcp provider using isc-dhcp-server
2015-09-24 17:38 GMT+02:00 Ionut Balutoiu : > Hello, guys! > > I'm starting a new implementation for a dhcp provider, > mainly to be used for Ironic standalone. I'm planning to > push it upstream. I'm using isc-dhcp-server service from > Linux. So, when an Ironic node is started, the ironic-conductor > writes in the config file the MAC-IP reservation for that node and > reloads dhcp service. I'm using a SQL database as a backend to store > the dhcp reservations (I think is cleaner and it should allow us > to have more than one DHCP server). What do you think about my > implementation ? > What you describe slightly resembles how ironic-inspector works. It needs to serve DHCP to nodes that are NOT know to Ironic, so it manages iptables rules giving (or not giving access) to the dnsmasq instance. I wonder if we may find some common code between these 2, but I definitely don't want to reinvent Neutron :) I'll think about it after seeing your spec and/or code, I'm already looking forward to them! > Also, I'm not sure how can I scale this out to provide HA/failover. > Do you guys have any idea ? > > Regards, > Ionut Balutoiu > > __ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > -- -- -- Dmitry Tantsur -- __ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Re: [openstack-dev] [Ironic] New dhcp provider using isc-dhcp-server
Hi Ionut, I like the idea -- I think there's only going to be one potential hiccup with getting this upstream: the use of an additional external database. My suggestion is to go ahead and post what you have up to Gerrit -- even if there's no spec and it's not ready to merge, everyone will be able to see what you're working on. If it's important for you to merge this upstream, I'd suggest starting on a spec for Ironic (https://wiki.openstack.org/wiki/Ironic/Specs_Process). Also as always, feel free to drop by #openstack-ironic on Freenode and chat about this as well. It sounds like you have a big use case for Ironic and we'd love to have you in the IRC community. Thanks, Jay Faulkner From: Ionut Balutoiu Sent: Thursday, September 24, 2015 8:38 AM To: openstack-dev@lists.openstack.org Subject: [openstack-dev] [Ironic] New dhcp provider using isc-dhcp-server Hello, guys! I'm starting a new implementation for a dhcp provider, mainly to be used for Ironic standalone. I'm planning to push it upstream. I'm using isc-dhcp-server service from Linux. So, when an Ironic node is started, the ironic-conductor writes in the config file the MAC-IP reservation for that node and reloads dhcp service. I'm using a SQL database as a backend to store the dhcp reservations (I think is cleaner and it should allow us to have more than one DHCP server). What do you think about my implementation ? Also, I'm not sure how can I scale this out to provide HA/failover. Do you guys have any idea ? Regards, Ionut Balutoiu __ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev __ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
[openstack-dev] [Ironic] New dhcp provider using isc-dhcp-server
Hello, guys! I'm starting a new implementation for a dhcp provider, mainly to be used for Ironic standalone. I'm planning to push it upstream. I'm using isc-dhcp-server service from Linux. So, when an Ironic node is started, the ironic-conductor writes in the config file the MAC-IP reservation for that node and reloads dhcp service. I'm using a SQL database as a backend to store the dhcp reservations (I think is cleaner and it should allow us to have more than one DHCP server). What do you think about my implementation ? Also, I'm not sure how can I scale this out to provide HA/failover. Do you guys have any idea ? Regards, Ionut Balutoiu __ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
