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 <leande...@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 < > leande...@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.mihaie...@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....@lists.launchpad.net[mailto: >>> openstack-bounces+george.mihaiescu=q9....@lists.launchpad.net] *On >>> Behalf Of *Leander Bessa Beernaert >>> *Sent:* Wednesday, September 05, 2012 9:49 AM >>> *To:* Vishvananda Ishaya >>> *Cc:* openstack@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 < >>> vishvana...@gmail.com> wrote:**** >>> >>> ** ** >>> >>> On Sep 4, 2012, at 3:01 PM, Leander Bessa Beernaert <leande...@gmail.com> >>> wrote:**** >>> >>> >>> >>> **** >>> >>> Question follows inlined below.**** >>> >>> On Tue, Sep 4, 2012 at 6:48 PM, Vishvananda Ishaya < >>> vishvana...@gmail.com> wrote:**** >>> >>> ** ** >>> >>> On Sep 4, 2012, at 8:35 AM, Leander Bessa Beernaert <leande...@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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