[openstack-dev] [Neutron][neutron-lbaas][octavia] Not be able to ping loadbalancer ip

Wanjing Xu (waxu) waxu at cisco.com
Thu Nov 3 02:04:51 UTC 2016

So I bring up octavia using devstack (stable/mitaka).   I created a loadbalander and a listener(not create member yet) and start to look at how things are connected to each other.  I can ssh to amphora vm and I do see a haproxy is up with front end point to my listener.  I tried to ping (from dhcp namespace) to the loadbalancer ip, and ping could not go through.  I am wondering how packet is supposed to reach this amphora vm.  I can see that the vm is launched on both network(lb_mgmt network and my vipnet), but I don't see any nic associated with my vipnet:

ubuntu at amphora-dad2f14e-76b4-4bd8-9051-b7a5627c6699:~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr fa:16:3e:b4:b2:45
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::f816:3eff:feb4:b245/64 Scope:Link
          RX packets:2496 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2626 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:307518 (307.5 KB)  TX bytes:304447 (304.4 KB)

lo        Link encap:Local Loopback
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:212 errors:0 dropped:0 overruns:0 frame:0
          TX packets:212 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:18248 (18.2 KB)  TX bytes:18248 (18.2 KB)

localadmin at dmz-eth2-ucs1:~/devstack$ nova list
| ID                                   | Name                                         | Status | Task State | Power State | Networks                                      |
| 557a3de3-a32e-419d-bdf5-41d92dd2333b | amphora-dad2f14e-76b4-4bd8-9051-b7a5627c6699 | ACTIVE | -          | Running     | lb-mgmt-net=; vipnet= |

And it seemed that amphora created a port from the vipnet for its vrrp_ip, but now sure how it is used and how it is supposed to help packet to reach loadbalancer ip

It will be great if somebody can help on this, especially on network side.


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