Open Stack

James,

I think I'm hitting this problem.

I'm using "Per-Tenant Routers with Private Networks", GRE tunnels and
L3+DHCP Network Node.

The connectivity from behind my Instances is very slow. It takes an
eternity to finish "apt-get update".

If I run "apt-get update" from within tenant's Namespace, it goes fine.

If I enable "ovs_use_veth", Metadata (and/or DHCP) stops working and I and
unable to start new Ubuntu Instances and login into them... Look:

--
cloud-init start running: Tue, 22 Oct 2013 05:57:39 +0000. up 4.01 seconds
2013-10-22 06:01:42,989 - util.py[WARNING]: '
http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [3/120s]:
url error [[Errno 113] No route to host]
2013-10-22 06:01:45,988 - util.py[WARNING]: '
http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [6/120s]:
url error [[Errno 113] No route to host]
--

Is this problem still around?!

Should I stay away from GRE tunnels when with Havana + Ubuntu 12.04.3?

Is it possible to re-enable Metadata when ovs_use_veth = true ?

Thanks!
Thiago


On 3 October 2013 06:27, James Page <james.page at ubuntu.com> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> On 02/10/13 22:49, James Page wrote:
> >> sudo ip netns exec qrouter-d3baf1b1-55ee-42cb-a3f6-9629288e3221
> >>> traceroute -n 10.5.0.2 -p 44444 --mtu traceroute to 10.5.0.2
> >>> (10.5.0.2), 30 hops max, 65000 byte packets 1  10.5.0.2  0.950
> >>> ms F=1500  0.598 ms  0.566 ms
> >>>
> >>> The PMTU from the l3 gateway to the instance looks OK to me.
> > I spent a bit more time debugging this; performance from within
> > the router netns on the L3 gateway node looks good in both
> > directions when accessing via the tenant network (10.5.0.2) over
> > the qr-XXXXX interface, but when accessing through the external
> > network from within the netns I see the same performance choke
> > upstream into the tenant network.
> >
> > Which would indicate that my problem lies somewhere around the
> > qg-XXXXX interface in the router netns - just trying to figure out
> > exactly what - maybe iptables is doing something wonky?
>
> OK - I found a fix but I'm not sure why this makes a difference;
> neither my l3-agent or dhcp-agent configuration had 'ovs_use_veth =
> True'; I switched this on, clearing everything down, rebooted and now
> I seem symmetric good performance across all neutron routers.
>
> This would point to some sort of underlying bug when ovs_use_veth = False.
>
>
> - --
> James Page
> Ubuntu and Debian Developer
> james.page at ubuntu.com
> jamespage at debian.org
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.14 (GNU/Linux)
> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
>
> iQIcBAEBCAAGBQJSTTh6AAoJEL/srsug59jDmpEP/jaB5/yn9+Xm12XrVu0Q3IV5
> fLGOuBboUgykVVsfkWccI/oygNlBaXIcDuak/E4jxPcoRhLAdY1zpX8MQ8wSsGKd
> CjSeuW8xxnXubdfzmsCKSs3FCIBhDkSYzyiJd/raLvCfflyy8Cl7KN2x22mGHJ6z
> qZ9APcYfm9qCVbEssA3BHcUL+st1iqMJ0YhVZBk03+QEXaWu3FFbjpjwx3X1ZvV5
> Vbac7enqy7Lr4DSAIJVldeVuRURfv3YE3iJZTIXjaoUCCVTQLm5OmP9TrwBNHLsA
> 7W+LceQri+Vh0s4dHPKx5MiHsV3RCydcXkSQFYhx7390CXypMQ6WwXEY/a8Egssg
> SuxXByHwEcQFa+9sCwPQ+RXCmC0O6kUi8EPmwadjI5Gc1LoKw5Wov/SEen86fDUW
> P9pRXonseYyWN9I4MT4aG1ez8Dqq/SiZyWBHtcITxKI2smD92G9CwWGo4L9oGqJJ
> UcHRwQaTHgzy3yETPO25hjax8ZWZGNccHBixMCZKegr9p2dhR+7qF8G7mRtRQLxL
> 0fgOAExn/SX59ZT4RaYi9fI6Gng13RtSyI87CJC/50vfTmqoraUUK1aoSjIY4Dt+
> DYEMMLp205uLEj2IyaNTzykR0yh3t6dvfpCCcRA/xPT9slfa0a7P8LafyiWa4/5c
> jkJM4Y1BUV+2L5Rrf3sc
> =4lO4
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> 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
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20131022/2d7b0f9d/attachment.html>