OK, what is OVN doing to the routing table or IP address configuration
for the docker container?

On Tue, Jan 31, 2017 at 11:12:40PM +0000, Ritesh Rekhi wrote:
> That is what I am not able to find.If I have only 1 chassis connected things 
> work fine. Looks like OVN is doing something to the docker eth0  interface 
> .Again this problem does't happen on a Vm.
> 
> It only happens on a docker container (:.
> 
> Thx
> Ritesh
> 
> -----Original Message-----
> From: Ben Pfaff [mailto:b...@ovn.org] 
> Sent: Tuesday, January 31, 2017 1:38 PM
> To: Ritesh Rekhi <ritesh.re...@nutanix.com>
> Cc: ovs-discuss@openvswitch.org
> Subject: Re: [ovs-discuss] after setting ovs-vsctl set open . 
> external-ids:ovn-encap-ip=<IP>, eth0 stops tansmitting any packets in docker 
> container
> 
> OK, well then, what is happening to the networking stack that causes the 
> problem?  OVN doesn't do anything to the host routing table or IP address 
> configuration, at least not intentionally.  What's happening to the host?
> 
> On Tue, Jan 31, 2017 at 06:36:10PM +0000, Ritesh Rekhi wrote:
> > Hi Ben,
> > 
> > Thx for the reply
> > 
> > To repro this issue we don't need any entries in North bound  and south 
> > bound database.
> > 
> > Here are the steps
> > 
> > 1) run my docker container
> > 
> > docker run -itd  --privileged -e CTL=10.4.163.249   
> > riteshrekhi/ovnstuff:2.6.90
> > 
> > do docker attach and go inside docker container , there execute script 
> > test.sh which starts ovsdb-server, ovs-vswitchd and 
> > ovn-controller.After that it will connect to the south-db
> > 
> > using command
> > 
> > ovs-vsctl set open . external-ids:system-id=$uuid ovs-vsctl set open . 
> > external-ids:ovn-remote=tcp:$CTL:6642
> >  ovs-vsctl set open . external-ids:ovn-encap-type=vxlan  ovs-vsctl set 
> > open . external-ids:ovn-encap-ip=$IP
> > 
> > 
> > Right after you execute this script and if connection to south-db 
> > establishes, you won't be able to ping out of eth0
> > 
> > 
> > 2) For version which is working you can do the same thing instead use 
> > riteshrekhi/ovnstuff
> > 
> > Ritesh
> > 
> > ===================================================================
> > 
> > South-bound DB
> > 
> > [root@controller ~]# ovn-sbctl show
> > Chassis "0b50e2f7-7421-4536-9441-447af46c4cc4"
> >     hostname: "fe11f7697841"
> >     Encap vxlan
> >         ip: "10.4.150.6"
> >         options: {csum="true"}
> > Chassis "0ebf5a6d-230a-4b9a-938e-976565d6993a"
> >     hostname: "23cc31791a67"
> >     Encap vxlan
> >         ip: "10.4.150.6"
> >         options: {csum="true"}
> > Chassis "ahv-a-10.11.2.21-newname"
> >     hostname: "NTNX-16SM6C380006-A"
> >     Encap vxlan
> >         ip: "10.11.2.21"
> >         options: {csum="true"}
> >     Encap geneve
> >         ip: "10.11.2.21"
> >         options: {csum="true"}
> > Chassis "2a083861-9841-4674-80ba-ed3c1bcf6918"
> >     hostname: "5af088595d12"
> >     Encap vxlan
> >         ip: "172.17.0.5"
> >         options: {csum="true"}
> >     Port_Binding "f4948a0f-6794-4140-9e4a-9616308467ee"
> >     Port_Binding "5c0e4397-7334-4f03-9ec3-fdc025588462"
> >     Port_Binding "f1fe3ff5-51ec-4790-ada8-c6e244e0cdd6"
> >     Port_Binding "f9e86d51-9b26-48f3-b2ad-8df492022a77"
> > Chassis "de1cc8d2-fb4b-4819-822a-c68d921a84f3"
> >     hostname: "cfa5bc3de51c"
> >     Encap vxlan
> >         ip: "10.4.150.6"
> >         options: {csum="true"}
> > 
> > 
> > North bound DB
> > 
> > ovn-nbctl show
> >     switch 3a2d4174-27c9-46bc-9191-1d52ab16c057 
> > (neutron-f0a1215f-cd3c-4c0e-8653-95c7d115731a)
> >         port c1c22fbb-5928-41c8-aa1a-c5a746c22118
> >             addresses: ["fa:16:3e:6f:ed:ce 10.20.4.1"]
> >         port f1fe3ff5-51ec-4790-ada8-c6e244e0cdd6
> >             addresses: ["fa:16:3e:68:cb:45 10.20.3.3"]
> >         port 864f7948-f254-4df2-b1cb-39138293a80d
> >             addresses: ["fa:16:3e:a7:d1:38 10.20.3.1"]
> >         port 5c0e4397-7334-4f03-9ec3-fdc025588462
> >             addresses: ["fa:16:3e:4e:d2:0f 10.20.4.3"]
> >     switch 1462d793-7fc5-47a2-8ede-23860a61353e 
> > (neutron-3f99e567-26da-44e3-bc41-c90572f45028)
> >         port f4948a0f-6794-4140-9e4a-9616308467ee
> >             addresses: ["fa:16:3e:eb:85:2c 10.20.3.3"]
> >         port f9e86d51-9b26-48f3-b2ad-8df492022a77
> >             addresses: ["fa:16:3e:e8:28:75 10.20.4.3"]
> >         port 9504652a-6cd7-45a2-8edf-411e23fe4204
> >             addresses: ["fa:16:3e:de:8b:1d 10.20.4.1"]
> >         port f3abc8da-5a4a-4a83-977e-7bffc51003b9
> >             addresses: ["fa:16:3e:96:08:ea 10.20.3.1"]
> >     router bc57dc9c-1032-41fd-8768-f0c7536d9558 
> > (neutron-9bf118df-154b-4659-97f4-d0c2ce6394cd)
> >         port lrp-864f7948-f254-4df2-b1cb-39138293a80d
> >             mac: "fa:16:3e:a7:d1:38"
> >             networks: ["10.20.3.1/24"]
> >         port lrp-c1c22fbb-5928-41c8-aa1a-c5a746c22118
> >             mac: "fa:16:3e:6f:ed:ce"
> >             networks: ["10.20.4.1/24"]
> >     router 9cc399f6-60bc-4117-8f0a-941711697c8e 
> > (neutron-39c6e2b9-4e0b-4641-9ca0-2a4ccc06741c)
> >     router 7636ef03-96ad-470b-b343-49e75211a506 
> > (neutron-df27d70e-88d9-469f-ba83-e2e2034e389a)
> >     router 25cb2627-c45a-40af-a49d-f6fc727580b1 
> > (neutron-9b7bd489-d872-4ffc-b4e3-a142f99ab00f)
> >         port lrp-9504652a-6cd7-45a2-8edf-411e23fe4204
> >             mac: "fa:16:3e:de:8b:1d"
> >             networks: ["10.20.4.1/24"]
> >         port lrp-f3abc8da-5a4a-4a83-977e-7bffc51003b9
> >             mac: "fa:16:3e:96:08:ea"
> >             networks: ["10.20.3.1/24"]
> > 
> > -----Original Message-----
> > From: Ben Pfaff [mailto:b...@ovn.org]
> > Sent: Tuesday, January 31, 2017 8:26 AM
> > To: Ritesh Rekhi <ritesh.re...@nutanix.com>
> > Cc: ovs-discuss@openvswitch.org
> > Subject: Re: [ovs-discuss] after setting ovs-vsctl set open . 
> > external-ids:ovn-encap-ip=<IP>, eth0 stops tansmitting any packets in 
> > docker container
> > 
> > On Mon, Jan 30, 2017 at 02:11:15AM +0000, Ritesh Rekhi wrote:
> > > To test scalability of controller, I made a docker container which 
> > > simulates as chassis using the instructions given by Dustin 
> > > http://blog.spinhirne.com/2016/09/a-primer-on-ovn.html.
> > > 
> > > Everything was working fine, I was able to connect to my controller and 
> > > can see the flows coming back to my controller. I was using released 
> > > version 2.6.0.
> > > 
> > > For some patches wanted to get latest version and found that after I 
> > > upgrade to latest patch , my script doesn't work. Upon troubleshooting 
> > > found that when I give the last command which establishes the connection 
> > > to controller i.e ovs-vsctl set open . external-ids:ovn-encap-ip=<IP> , 
> > > eth0 stopped Transmitting  any packets on the container.
> > > 
> > > I started poking around and found that commit 
> > > "1ea9b847135eddca39ed95c0811edd605f6ca114" introduced this issue. If I 
> > > use a commit before that things are working fine.
> > 
> > OK...  I'll need more information about your setup.  To start, can you 
> > provide your OVN northbound and southbound databases?
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