[Openstack] havana dhcp issue

Paras pradhan pradhanparas at gmail.com
Thu Nov 14 16:43:53 UTC 2013


Nick,

I don't see GRE(odd?) but with others (br-tun,patch-int) are all '0'. It is
a single node installation if that matters.

-Paras.


On Thu, Nov 14, 2013 at 10:36 AM, Nick Maslov <azpekt at gmail.com> wrote:

> Hi Paras,
>
> I also have speed at 0Mbps on my br-tun for everything (GRE, patch-int) in
> one environment, and 100Mbps on another.
>
> Can you pls provide me with some info about those speed marks? Like, if
> it`s on 0 - that means that no tunnels are working properly?
>
> Thanks
> NM
>
> --
> Nick Maslov
> Sent with Airmail <http://airmailapp.com/tracking>
>
> On November 11, 2013 at 6:41:40 PM, Paras pradhan (pradhanparas at gmail.com<//pradhanparas at gmail.com>)
> wrote:
>
> Yes br-tun is there.  here is the o/p of ovs-ofctl.
>
> -
>  root at havana:~# ovs-ofctl show br-tun
> OFPT_FEATURES_REPLY (xid=0x2): dpid:00004e6501755448
> n_tables:254, n_buffers:256
> capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP
> actions: OUTPUT SET_VLAN_VID SET_VLAN_PCP STRIP_VLAN SET_DL_SRC SET_DL_DST
> SET_NW_SRC SET_NW_DST SET_NW_TOS SET_TP_SRC SET_TP_DST ENQUEUE
>  1(patch-int): addr:42:9d:7c:13:4b:58
>      config:     0
>      state:      0
>      speed: 0 Mbps now, 0 Mbps max
>  LOCAL(br-tun): addr:4e:65:01:75:54:48
>      config:     0
>      state:      0
>      speed: 0 Mbps now, 0 Mbps max
> OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0
>  --
>
> Thanks
> Paras.
>
>
> On Sat, Nov 9, 2013 at 3:44 AM, Igor Cardoso <igordcard at gmail.com> wrote:
>
>> I guess br-tun is created in a single node as well, someone correct me if
>> I'm wrong please.
>> What is the output of ovs-ofctl show br-tun ?
>>
>>
>> On 9 November 2013 02:35, Paras pradhan <pradhanparas at gmail.com> wrote:
>>
>>> Yes gre . all (controller plus compute) in a single node though.
>>>  On Nov 8, 2013 5:17 PM, "Igor Cardoso" <igordcard at gmail.com> wrote:
>>>
>>>> Are you using GRE?
>>>>
>>>>
>>>> On 8 November 2013 22:48, Paras pradhan <pradhanparas at gmail.com> wrote:
>>>>
>>>>>  use_namespace is set to true, iproute is up to date from 12.04 LTS.
>>>>>
>>>>> This is what I see when tcpdump
>>>>> -
>>>>>
>>>>>  root at havana:/home/localadmin# tcpdump -i qvo6157a9aa-76
>>>>> tcpdump: WARNING: qvo6157a9aa-76: no IPv4 address assigned
>>>>> tcpdump: verbose output suppressed, use -v or -vv for full protocol
>>>>> decode
>>>>> listening on qvo6157a9aa-76, link-type EN10MB (Ethernet), capture size
>>>>> 65535 bytes
>>>>> 16:46:39.006180 IP6 fe80::40fa:38ff:fee3:a3fa > ff02::16: HBH ICMP6,
>>>>> multicast listener report v2, 1 group record(s), length 28
>>>>> 16:46:39.784902 IP6 :: > ff02::16: HBH ICMP6, multicast listener
>>>>> report v2, 1 group record(s), length 28
>>>>> 16:46:39.824273 IP 0.0.0.0.bootpc > 255.255.255.255.bootps:
>>>>> BOOTP/DHCP, Request from fa:16:3e:9a:38:1e (oui Unknown), length 280
>>>>> 16:46:39.933463 IP6 :: > ff02::1:ff9a:381e: ICMP6, neighbor
>>>>> solicitation, who has fe80::f816:3eff:fe9a:381e, length 24
>>>>> 16:46:40.325389 IP6 :: > ff02::16: HBH ICMP6, multicast listener
>>>>> report v2, 1 group record(s), length 28
>>>>> 16:46:40.934808 IP6 fe80::f816:3eff:fe9a:381e > ip6-allrouters: ICMP6,
>>>>> router solicitation, length 16
>>>>> 16:46:42.833239 IP 0.0.0.0.bootpc > 255.255.255.255.bootps:
>>>>> BOOTP/DHCP, Request from fa:16:3e:9a:38:1e (oui Unknown), length 280
>>>>> 16:46:44.936871 IP6 fe80::f816:3eff:fe9a:381e > ip6-allrouters: ICMP6,
>>>>> router solicitation, length 16
>>>>> 16:46:45.840668 IP 0.0.0.0.bootpc > 255.255.255.255.bootps:
>>>>> BOOTP/DHCP, Request from fa:16:3e:9a:38:1e (oui Unknown), length 280
>>>>> 16:46:48.945478 IP6 fe80::f816:3eff:fe9a:381e > ip6-allrouters: ICMP6,
>>>>> router solicitation, length 16
>>>>> 16:47:00.542029 IP 0.0.0.0 > all-systems.mcast.net: igmp query v2
>>>>> 16:47:00.542036 IP6 fe80::d894:29ff:fe08:5ec > ip6-allnodes: HBH
>>>>> ICMP6, multicast listener querymax resp delay: 10000 addr: ::, length 24
>>>>>  --
>>>>>
>>>>> Thanks!
>>>>> Paras.
>>>>>
>>>>>
>>>>>
>>>>> On Fri, Nov 8, 2013 at 4:26 PM, Rami Vaknin <rvaknin at redhat.com>wrote:
>>>>>
>>>>>>  On 11/09/2013 12:18 AM, Paras pradhan wrote:
>>>>>>
>>>>>> dnsmaq is running, ip netns doesn't return anything.
>>>>>>
>>>>>>
>>>>>> Empty output from "ip netns" can be either not using namespaces (run
>>>>>> grep "use_namespaces /etc/neutron/l3_agent.ini" to find out) or using wrong
>>>>>> iproute package.
>>>>>> Could you please also check what does tcpdump report? could you see
>>>>>> the discover on the dhcp nic (when using ovs it's a tapxxxxxxxx-xx nic)?
>>>>>> could you see an offer sent from that nic?
>>>>>>
>>>>>>
>>>>>>
>>>>>> -Paras.
>>>>>>
>>>>>>
>>>>>> On Fri, Nov 8, 2013 at 4:07 PM, Rami Vaknin <rvaknin at redhat.com>wrote:
>>>>>>
>>>>>>>  On 11/08/2013 11:35 PM, Paras pradhan wrote:
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> I gpt an instance UP but it doesnot get an IP address. neutron
>>>>>>> agent-list lists DHCP agent happy. While booting I see cirros stuck at
>>>>>>> sending discover... multiple times. dnsmasq process is running. how do i
>>>>>>> debug?
>>>>>>>
>>>>>>>
>>>>>>> I would start with:
>>>>>>> * ps -efl | grep dnsmasq | grep -v grep - to verify that the dnsmasq
>>>>>>> process is running, you can also check the conf file appeas in this output
>>>>>>> * ip netns - to get the list of namespaces
>>>>>>> * ip netns exec <the_right_dhcp_namespace_name> tcpdump -i any ... -
>>>>>>> to look for the dhcp offer or arp issues
>>>>>>> * ping each other - instance to dhcp address, and vice versa (the
>>>>>>> second one should be done from within the namespace)
>>>>>>>
>>>>>>>
>>>>>>>  Thanks
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>>>> Post to     : openstack at lists.openstack.org
>>>>>>> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Rami Vaknin, QE @ Red Hat, TLV, IL.
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Rami Vaknin, QE @ Red Hat, TLV, IL.
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Mailing list:
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>>>>> Post to     : openstack at lists.openstack.org
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>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> http://igordcard.blogspot.com
>>>>
>>>
>>
>>
>>  --
>> http://igordcard.blogspot.com
>>
>
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