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| azbiswas | russellb: Are we planning on demoing any FIP scenarios in Tokyo? | 16:03 |
|---|---|---|
| russellb | azbiswas: that was the original goal, but we need a NAT solution, which I think ben was working on but i haven't heard an update on it in the last few days | 16:04 |
| russellb | if we want FIPs to work, it would be at the current state (before we merge your patch and start configuring OVN's native L3) | 16:05 |
| russellb | unless NAT is implemented, then we'd merge your patch, and do a bit more i think | 16:05 |
| russellb | need to set the IP addresses on all logical ports, for example | 16:06 |
| russellb | turn off L3 agent | 16:06 |
| russellb | do whatever is needed in OVN_Northbound for floating IPs (not defined yet) | 16:06 |
| russellb | probably some devstack work to do our own default network setup instead of what is done now with L3 agent | 16:06 |
| russellb | it's quite a bit :-/ | 16:06 |
| russellb | so i'm starting to think we may just not have that for next week | 16:06 |
| russellb | i need to grab lunch, but i'll be back in a bit | 16:07 |
| russellb | weekly OVN meeting is in an hour | 16:07 |
| russellb | so hopefully we can sync up then with ben and justin in #openvswitch | 16:07 |
| russellb | and see where we stand | 16:07 |
| russellb | bbiab | 16:08 |
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| VikramDham | I am trying to setup devstack + neutron-ovn using Vagrantfile and seeing issue where it looks like ovsdb server is listening only on NAT interface instead of management network - anyone else has seen similar issue? Because of this compute node ovn-controller cannot connect with ovsdb server on controller node. | 16:45 |
| VikramDham | Do I need to modify any devstack configuration to have ovn/ovsdb listen on eth1 of controller node instead of eth0? | 16:46 |
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| azbiswas | VikramDham: Devstack starts the ovsdb server at OVSDB_REMOTE="--remote=ptcp:6640:$HOST_IP". Try setting the HOST_IP=$eth1_ip in local.conf | 16:55 |
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| russellb | VikramDham: sorry, i haven't actually used the vagrant setup in networking-ovn yet | 16:59 |
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| russellb | ovn meeting starting now in #openvswitch | 17:15 |
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| azbiswas | cfg.StrOpt('ovn_l3_mode', | 18:34 |
| azbiswas | default='off') | 18:34 |
| azbiswas | russellb: For turning off the router patch I'm think off something along the line of | 18:34 |
| azbiswas | see above | 18:34 |
| russellb | sounds good to me! | 18:35 |
| azbiswas | ok | 18:35 |
| russellb | and then maybe a OVN_L3_MODE variable in the devstack plugin | 18:35 |
| russellb | that sets that in the config file | 18:35 |
| russellb | because we'll need it in the devstack plugin for making the l3 agent run or not | 18:35 |
| russellb | eventually anyway | 18:35 |
| azbiswas | ok I need to look into that a bit more - unfamiliar territory at the moment :) | 18:35 |
| russellb | OK, no worries! | 18:36 |
| russellb | we can do the local.conf thing later if needed | 18:36 |
| russellb | it's just a bash variable we'd define at the top of devstack/plugin.sh | 18:36 |
| russellb | and then use as needed | 18:36 |
| russellb | for example, to set the config file option you just defined automatically | 18:36 |
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| azbiswas | Looking at it - and got it | 18:37 |
| russellb | k :) | 18:38 |
| shettyg1 | russellb: with the localnet logical port, I suppose one can get ssh access to the VM? | 18:38 |
| russellb | shettyg: yes, it's one of the ways we have for providing logical-to-physical connectivity | 18:38 |
| shettyg1 | So I can techincally have 2 logical ports per VM - one being localnet port and another being overlay port | 18:38 |
| russellb | localnet ports are restricted in how you can use them | 18:39 |
| russellb | we only support localnet ports on a logical switch that has exactly 1 localnet port and exactly 1 other logical port | 18:40 |
| russellb | that logical port could be a VM, or it could be a logical port that maps to a router interface | 18:40 |
| russellb | (though the router interface part isn't supported in OpenStack just yet) | 18:40 |
| russellb | getting closer though :) | 18:40 |
| shettyg1 | russellb: So I can have a VM with 2 network interfaces. One connects to localnet logical switch and another connects to a different logical switch, right? | 18:41 |
| russellb | yes, you could do that | 18:41 |
| shettyg1 | russellb: When I create a neutron network via 'neutron net-create' is there an option to be passed to mention that it is a "localnet" type logical switch? If you have documented the workflow, please share a link. | 18:43 |
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| russellb | on http://docs.openstack.org/developer/networking-ovn/testing.htm | 18:43 |
| russellb | at the bottom | 18:43 |
| russellb | there's a section called "Provider Networks" | 18:43 |
| russellb | http://docs.openstack.org/developer/networking-ovn/testing.html | 18:44 |
| russellb | lost the trailing 'l' | 18:44 |
| shettyg1 | russellb: thanks, that looks very helpful atleast for local setups wherein you want ssh connectivity for vms. I suppose, while creating the logical port in neutron I can provide it a mac address that my corporate dhcp server recognizes and then I can get ssh connectivity | 18:47 |
| russellb | correct | 18:47 |
| russellb | you can also tell Neutron whether or not it should provide DHCP on this network itself | 18:47 |
| russellb | though I doubt that actually works right now | 18:47 |
| russellb | maybe it does, i'm not sure | 18:48 |
| russellb | you don't *have* to use this method to get ssh connectivity to your VMs, though | 18:48 |
| russellb | devstack sets up some other stuff to make it work with your overlay network | 18:48 |
| russellb | https://russellbryantnet.files.wordpress.com/2015/05/default-topology.png | 18:49 |
| russellb | that's the default network topology that is created | 18:49 |
| russellb | "private" is an overlay | 18:49 |
| russellb | "public" is just a network defined on your main node | 18:49 |
| russellb | there's a neutron python agent, the "l3 agent" running, that handles routing between those two | 18:50 |
| russellb | using a separate ovs bridge (br-ex), namespaces, and junk | 18:50 |
| russellb | (and junk means i don't know it all off the top of my head :-p) | 18:50 |
| russellb | SO | 18:50 |
| russellb | you normally boot VMs onto the "private" network, which is a single OVN logical switch | 18:50 |
| russellb | you can access it 1 of 2 ways at that point | 18:50 |
| russellb | the first is a hack, set up by devstack ... it creates a route to the 10.0.0.0/24 network through br-ex, so you can actually get to those addresses directly | 18:51 |
| russellb | the more "proper" workflow using OpenStack APIs is to allocate a "floating IP" on the "public" network | 18:51 |
| russellb | and then associate it with your IP on the "private" network | 18:51 |
| russellb | your floating IP will be in the 172.24.4.0/24 range based on that picture | 18:51 |
| russellb | and you can ssh to that | 18:51 |
| russellb | and the L3 agent handles NAT | 18:52 |
| russellb | http://docs.openstack.org/developer/networking-ovn/testing.html talks about using ssh to a VM you boot | 18:53 |
| russellb | that's how it works | 18:53 |
| russellb | (yes, it's a miracle any of this works at all, that's how i feel too) | 18:56 |
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| shettyg1 | russellb: thanks, yeah. | 19:30 |
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| russellb | OVN ACLs are so awesome that they are breaking my wordpress theme somehow | 19:33 |
| russellb | ... i hate the web | 19:33 |
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| shettyg1 | the ssh part using the devstack hack likely does not allow you to 'apt-get install' external packages from inside the VM, though, right? It is only useful for ssh from local hypervisor. | 19:43 |
| russellb | correct | 19:43 |
| russellb | in all of my testing so far, i haven't done anything interesting inside the VMs, like say, install and use docker .... | 19:43 |
| russellb | i typically just use the default image that devstack installs, called CirrOS | 19:44 |
| russellb | which an ultra minimal linux image | 19:44 |
| russellb | i ping it, ssh to it, celebrate that it's alive | 19:44 |
| russellb | that's about it | 19:44 |
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| russellb | ssh *from* it sometimes, even | 19:44 |
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| VikramDham | thanks azbiswas for pointer on local.conf setting for ovsdb | 22:38 |
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