some compute nodes cannot get ip

asked 2015-11-25 04:53:00 -0600

jinsan park gravatar image

Hello.

I'm installing Openstack but it has some issue with Liverty version.

I have 3 nodes. 2 compute node, 1 controller node&network node. nodes are physical servers.

There are the network interfaces of nodes

controller node : 2 interface(ens160:10.0.159.14-For gre communication & manage) (br-ex: 10.0.159.50-For external network )

First compute node - 1 interface(ens160:10.0.159.11)

Second compute node -1 interface(ens160:10.0.159.12)

and tenant network is GRE and provider network is flat network.

Problem :

one of computes node(it changed each other) can not get ip from dhcp. there is no error log and I checked packet flow through tcpdump but dhcp agent had gotten ip but the vm cannot get it.

one compute node can get ip from dhcp fastest, but the other cannot get ip. The node that can't get ip has changed whenever all nodes are rebooted.

I will upload my configuration. so please see and find out the solution .T_T

Thank you!


below is result of ip netns exec qdhcp-828b9ade-991d-470c-bda6-2b28e0005fd3 tcpdump -i tap58bb7631-6a

19:49:47.379241 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from fa:16:3e:0a:6a:5f (oui Unknown), length 290
19:49:47.379968 IP OPENSTACK.bootps > 192.168.20.25.bootpc: BOOTP/DHCP, Reply, length 312
19:49:47.380342 IP OPENSTACK.34417 > 10.0.4.31.domain: 28367+ PTR? 25.20.168.192.in-addr.arpa. (44)
19:49:47.382743 IP 10.0.4.31.domain > OPENSTACK.34417: 28367 NXDomain 0/1/0 (94)
19:49:48.039383 IP6 :: > ff02::1:ff0a:6a5f: ICMP6, neighbor solicitation, who has fe80::f816:3eff:fe0a:6a5f, length 24
19:49:48.039686 IP OPENSTACK.36019 > 10.0.4.31.domain: 18140+ PTR? f.5.a.6.a.0.f.f.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa. (90)
19:49:48.204909 IP 10.0.4.31.domain > OPENSTACK.36019: 18140 NXDomain 0/1/0 (160)
19:49:48.205232 IP OPENSTACK.48926 > 10.0.4.31.domain: 1592+ PTR? f.5.a.6.a.0.e.f.f.f.e.3.6.1.8.f.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa. (90)
19:49:48.207743 IP 10.0.4.31.domain > OPENSTACK.48926: 1592 NXDomain 0/1/0 (125)
19:49:49.039358 IP6 fe80::f816:3eff:fe0a:6a5f > ff02::2: ICMP6, router solicitation, length 16
19:49:49.867075 IP6 fe80::f816:3eff:fe0a:6a5f > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
19:49:50.281388 IP6 fe80::54e7:6ff:fed8:7df6 > ff02::2: ICMP6, router solicitation, length 16
19:49:50.953376 IP6 fe80::d0be:25ff:fe6d:8bd3 > ff02::2: ICMP6, router solicitation, length 16
19:49:52.394237 ...
(more)
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