Open Stack

Do i also need ip_forward enabled on the controller node? (sorry about the
duplicate)
On Wed, Sep 5, 2012 at 4:25 PM, Leander Bessa Beernaert <leanderbb at gmail.com
> wrote:

> Do i also no ip_forward enabled on the controller node?
>
>
> On Wed, Sep 5, 2012 at 3:18 PM, Leander Bessa Beernaert <
> leanderbb at gmail.com> wrote:
>
>> All compute nodes have /proc/sys/net/ipv4/ip_forward set to 1. So that
>> can't be the issue :s
>>
>>
>> On Wed, Sep 5, 2012 at 3:11 PM, George Mihaiescu <George.Mihaiescu at q9.com
>> > wrote:
>>
>>> **
>>>
>>> Hi Leander,****
>>>
>>> ** **
>>>
>>> Make sure you have ip forward enabled on the nova-compute nodes (that
>>> now act as nova-network as well).****
>>>
>>> Second, each nova-network acts as a gateway for each project and it
>>> needs an IP address, so probably this explains the “phantom” 10.0.108.4,
>>> 10.0.108.6, 10.0.108.8 and 10.0.108.4.10 addresses.****
>>>
>>> ** **
>>>
>>> George****
>>>
>>> ** **
>>>  ------------------------------
>>>
>>> *From:* openstack-bounces+george.mihaiescu=q9.com at lists.launchpad.net[mailto:
>>> openstack-bounces+george.mihaiescu=q9.com at lists.launchpad.net] *On
>>> Behalf Of *Leander Bessa Beernaert
>>> *Sent:* Wednesday, September 05, 2012 9:49 AM
>>> *To:* Vishvananda Ishaya
>>> *Cc:* openstack at lists.launchpad.net
>>> *Subject:* Re: [Openstack] [OpenStack][Nova]Problems and questions
>>> regarding network and/or routing****
>>>
>>> ** **
>>>
>>> I'm having the strangest issue. I have set up a separate OpenStack
>>> cluster to test out the multi-host setup. ****
>>>
>>> ** **
>>>
>>> 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 10.0.108.0/24
>>> . ****
>>>
>>> ** **
>>>
>>> I launched 4 instances to fill up the compute nodes:****
>>>
>>> ** **
>>>
>>>
>>> +--------------------------------------+------+--------+----------------------------+
>>> ****
>>>
>>> |                  ID                  | Name | Status |
>>>  Networks          |****
>>>
>>>
>>> +--------------------------------------+------+--------+----------------------------+
>>> ****
>>>
>>> | 2c63cc3e-7c45-4e10-8ac5-480fa60d4f32 | Test | ACTIVE |
>>> project_network=10.0.108.7 |****
>>>
>>> | c48f6aae-0d97-4e69-a398-8cda929c310d | Test | ACTIVE |
>>> project_network=10.0.108.3 |****
>>>
>>> | ed8f11a4-5fc0-4437-9ae2-b6725126fca7 | Test | ACTIVE |
>>> project_network=10.0.108.5 |****
>>>
>>> | fe39e586-030c-4bf4-9020-7ef773567913 | Test | ACTIVE |
>>> project_network=10.0.108.9 |****
>>>
>>>
>>> +--------------------------------------+------+--------+----------------------------+
>>> ****
>>>
>>> ** **
>>>
>>> One thing i found odd at the beginning was the fact that the instances
>>> are using only odd addresses. **The** installation is clean and no
>>> instances have been launched before, so all the addresses are available.
>>> ****
>>>
>>> ** **
>>>
>>> **The** 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. ****
>>>
>>> I have also no connectivity from within the instances to the outside
>>> world.****
>>>
>>> ** **
>>>
>>> Has this happend to anyone before?****
>>>
>>> ** **
>>>
>>> ** **
>>>
>>> On Tue, Sep 4, 2012 at 11:38 PM, Vishvananda Ishaya <
>>> vishvananda at gmail.com> wrote:****
>>>
>>> ** **
>>>
>>> On Sep 4, 2012, at 3:01 PM, Leander Bessa Beernaert <leanderbb at gmail.com>
>>> wrote:****
>>>
>>>
>>>
>>> ****
>>>
>>> Question follows inlined below.****
>>>
>>> On Tue, Sep 4, 2012 at 6:48 PM, Vishvananda Ishaya <
>>> vishvananda at gmail.com> wrote:****
>>>
>>> ** **
>>>
>>> On Sep 4, 2012, at 8:35 AM, Leander Bessa Beernaert <leanderbb at gmail.com>
>>> wrote:****
>>>
>>>
>>>
>>> ****
>>>
>>> Hello all,****
>>>
>>> ** **
>>>
>>> I've had a few reports from users testing out the sample installation of
>>> OpenStack  i setup. **The** 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
>>> www.google.com). I'm not sure if i setup something wrong, so i have a
>>> few questions.****
>>>
>>> ** **
>>>
>>> **The** 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. **The**re is
>>> one peculiarity to this setup. Since each physical hosts only has 1 network
>>> interface,  i came up with the following configuration:****
>>>
>>>   - For inter-node communications i set up  a VLAN with the ID 107****
>>>
>>>   - Each tentant has it's private network on a separate VLAN. Currently
>>> there are two tenant, one on VLAN 109 (network: 10.0.9.0/24) and
>>> another on VLAN 110 (network: 10.0.9.0/24). ****
>>>
>>> ** **
>>>
>>> I'm not a network expert, so please bear with me if i make any outrages
>>> statements. ****
>>>
>>> ** **
>>>
>>> 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. **The**y are using network intensive
>>> applications which send a lot of data between each of the instances. **
>>> The**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?****
>>>
>>> ** **
>>>
>>> **The**re are a lot of things that could cause this. You would need to
>>> do some extensive debugging to find the source of this.****
>>>
>>> ** **
>>>
>>> Any ideas where i can start looking? ****
>>>
>>> Also, communications between two VMs on different compute nodes from the
>>> same tenant do not need to be routed through the controller node right?*
>>> ***
>>>
>>> ** **
>>>
>>> in non-multi_host mode I believe it will go through the controller.****
>>>
>>> ** **
>>>
>>> Vish****
>>>
>>> ** **
>>>
>>>
>>>
>>> ****
>>>
>>> ** **
>>>
>>> -- ****
>>>
>>> Cumprimentos / Regards,****
>>>
>>> Leander****
>>>
>>
>>
>>
>> --
>> Cumprimentos / Regards,
>> Leander
>>
>
>
>
> --
> Cumprimentos / Regards,
> Leander
>



-- 
Cumprimentos / Regards,
Leander
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