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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi Leander,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Make sure you have ip forward enabled on
the nova-compute nodes (that now act as nova-network as well).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Second, each nova-network acts as a
gateway for each project and it needs an IP address, so probably this explains
the “phantom” </span></font>10.0.108.4, 10.0.108.6, 10.0.108.8
and 10.0.108.4.10 addresses.<o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>George<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
openstack-bounces+george.mihaiescu=q9.com@lists.launchpad.net
[mailto:openstack-bounces+george.mihaiescu=q9.com@lists.launchpad.net] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Leander Bessa Beernaert<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, September 05,
2012 9:49 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Vishvananda Ishaya<br>
<b><span style='font-weight:bold'>Cc:</span></b> openstack@lists.launchpad.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Openstack]
[OpenStack][Nova]Problems and questions regarding network and/or routing</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I'm having the strangest issue. I have set up a separate OpenStack
cluster to test out the multi-host setup. <o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I have one controller node and 4 compute nodes. Each compute node is
running nova-network, nova-compute and nova-api-metadata. I have set up a tenant
with the a multi-host network on the address range <a
href="http://10.0.108.0/24">10.0.108.0/24</a>. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I launched 4 instances to fill up the compute nodes:<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<div>
<p class=MsoNormal><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>+--------------------------------------+------+--------+----------------------------+</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>|
ID |
Name | Status | Networks
|</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>+--------------------------------------+------+--------+----------------------------+</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>| 2c63cc3e-7c45-4e10-8ac5-480fa60d4f32 | Test |
ACTIVE | project_network=10.0.108.7 |</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>| c48f6aae-0d97-4e69-a398-8cda929c310d | Test |
ACTIVE | project_network=10.0.108.3 |</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>| ed8f11a4-5fc0-4437-9ae2-b6725126fca7 | Test |
ACTIVE | project_network=10.0.108.5 |</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>| fe39e586-030c-4bf4-9020-7ef773567913 | Test |
ACTIVE | project_network=10.0.108.9 |</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>+--------------------------------------+------+--------+----------------------------+</span></font><o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>One thing i found odd at the beginning was the fact that the instances
are using only odd addresses. <st1:PersonName w:st="on">The</st1:PersonName>
installation is clean and no instances have been launched before, so all the
addresses are available. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><st1:PersonName w:st="on"><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>The</span></font></st1:PersonName> problem now is
that i can only ping instances form the compute nodes. I am unable to ping any
instance from the controller node. Stranger yet, is the fact that i can ping
non-existent address such as 10.0.108.4,10.0.108.6,10.0.108.8
and 10.0.108.4.10. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I have also no connectivity from within the instances to the outside
world.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Has this happend to anyone before?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Tue, Sep 4, 2012 at 11:38 PM, Vishvananda Ishaya <<a
href="mailto:vishvananda@gmail.com" target="_blank">vishvananda@gmail.com</a>>
wrote:<o:p></o:p></span></font></p>
<div style='word-wrap:break-word'>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Sep 4, 2012, at 3:01 PM, Leander Bessa Beernaert <<a
href="mailto:leanderbb@gmail.com" target="_blank">leanderbb@gmail.com</a>>
wrote:<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Question follows inlined
below.<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Tue, Sep 4, 2012 at 6:48 PM, Vishvananda Ishaya <<a
href="mailto:vishvananda@gmail.com" target="_blank">vishvananda@gmail.com</a>>
wrote:<o:p></o:p></span></font></p>
<div style='word-wrap:break-word'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Sep 4, 2012, at 8:35 AM, Leander Bessa Beernaert <<a
href="mailto:leanderbb@gmail.com" target="_blank">leanderbb@gmail.com</a>>
wrote:<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hello all,<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I've had a few reports from users testing out the sample installation
of OpenStack i setup. <st1:PersonName w:st="on">The</st1:PersonName>
reports were all related to problems with inter-vm network speeds and
connection timeouts as well as the inability to connect to the outside word
from within the VM (e.g.: ping <a href="http://www.google.com/" target="_blank">www.google.com</a>). I'm
not sure if i setup something wrong, so i have a few questions.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><st1:PersonName w:st="on"><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>The</span></font></st1:PersonName>
current installation of OpenStack is running with 1 controller node,
and 8 compute nodes. Each node is running Ubuntu 12.04 and Essex with the
default packages. I'm using the VLAN network manager. <st1:PersonName
w:st="on">The</st1:PersonName>re is one peculiarity to this setup. Since each
physical hosts only has 1 network interface, i came up with the
following configuration:<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> - For inter-node communications i set up a VLAN with the
ID 107<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> - Each tentant has it's private network on a separate VLAN.
Currently there are two tenant, one on VLAN 109 (network: <a
href="http://10.0.9.0/24" target="_blank">10.0.9.0/24</a>) and another on VLAN
110 (network: <a href="http://10.0.9.0/24" target="_blank">10.0.9.0/24</a>). <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I'm not a network expert, so please bear with me if i make any outrages
statements. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>1) When communicating on the private network, the packets are not routed
through the controller right? That only happens when the VM needs to contact an
external source (e.g.: google), correct? This report originated from users
from VLAN 109. <st1:PersonName w:st="on">The</st1:PersonName>y are using
network intensive applications which send a lot of data between each of the
instances. <st1:PersonName w:st="on">The</st1:PersonName>y reported various
time-out and connection drops as well as slow transfer speeds. I'm no network
expert, but could this be related to the routing, VLANs or is it a hardware
issue?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><st1:PersonName w:st="on"><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>The</span></font></st1:PersonName>re are a lot of
things that could cause this. You would need to do some extensive debugging to
find the source of this.<o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Any ideas where i can start looking? <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Also, communications between two VMs on different compute nodes from
the same tenant do not need to be routed through the controller node right?<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>in non-multi_host mode I believe it will go through the controller.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Vish<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br clear=all>
<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>-- <o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Cumprimentos / Regards,<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Leander<o:p></o:p></span></font></p>
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