← Back to team overview

openstack team mailing list archive

Re: Instance IP assignment problem

 

Can you send my your nova.conf of nova-compute servers ?



I'm thinking about flat interface...




Le jeudi 03 mai 2012 à 10:26 +0100, Bilel Msekni a écrit :
> Basing on your architecture picture , I think you mean ping VM that
> resides on Essex 2 from server containing Essex 1
> 
> I had a similar networking problem and i honestly don't know i fixed
> it ( didn't enable tunneling) , this is what i did
> 1- ifconfig eth0 0.0.0.0
> 2- dhclient br-int ( normally the bridge will take the address of
> eth0)
> 
> 
> and pinging went back to working fine but i am still testing if there
> are any side effects
> Try it out and txt me !
> 
> 
> btw , i used your ubuntu 12.04 LTS cloud img and i can't seem to ping
> it but when i choose another image ( the default tty for example) it
> ping as a charm , probably you should pick another image !  
>  
> 
> 
> 
> 
> 
> ______________________________________________________________________
> Subject: RE: [Openstack] Instance IP assignment problem
> From: emilien.openstack@xxxxxxxxx
> To: skible@xxxxxxxxxx
> CC: openstack@xxxxxxxxxxxxxxxxxxx
> Date: Thu, 3 May 2012 11:11:04 +0200
> 
> Ok :
> 
> http://paste.openstack.org/show/14797/
> 
> 
> I know where is the problem but I dont know yet how to fix it :
> 
> 
> - Quantum creates TAP interface on ESSEX-2
> 
> - From ESSEX-2, I can't ping VMs on ESSEX-1
> 
> 
> Here my ovs_quantum_plugin.ini :
> 
> [DATABASE]
> sql_connection =
> mysql://ovs_quantum:password@10.68.1.40:3306/ovs_quantum
> 
> 
> [OVS]
> integration-bridge = br-int
> 
> 
> [AGENT]
> root_helper = sudo
> 
> 
> 
> Do we need enable bridge ?
> 
> 
> 
> 
> Le jeudi 03 mai 2012 à 10:00 +0100, Bilel Msekni a écrit : 
> 
>         èmm , can you do this on your instance : nova show %
>         instance_Id so that i may see the problem in the resume of
>         spawning ?
>         and are you sure you have enough fixed ip addresses left for
>         use ?
>         
>         The configuration of nova and quantum is almost the same as me
>         and the instances are getting Fixed Ips without any problem !
>         
>         
>         ______________________________________________________________
>         
>         Subject: RE: [Openstack] Instance IP assignment problem
>         From: emilien.openstack@xxxxxxxxx
>         To: skible@xxxxxxxxxx
>         CC: salmanmk@xxxxxxxx; openstack@xxxxxxxxxxxxxxxxxxx
>         Date: Thu, 3 May 2012 10:48:43 +0200
>         
>         All seems alright but not working yet.
>         
>         
>         http://paste.openstack.org/show/14791/
>         
>         
>         
>         I have executed on both servers :
>         
>         ovs-vsctl add-port br-int eth1
>         
>         
>         Need I do something else ?
>         
>         How the DHCP is working in this case ?
>         
>         
>         
>         
>         
>         
>         Le jeudi 03 mai 2012 à 09:29 +0100, Bilel Msekni a écrit : 
>         
>                 Then the problem isn't in the instance but in the
>                 nova-network service , please check if it is working
>                 well 
>                 as well as give us the output log when you attempt to
>                 create a new instance.
>                 
>                 
>                 
>                 ______________________________________________________
>                 
>                 
>                 Subject: RE: [Openstack] Instance IP assignment
>                 problem
>                 From: emilien.openstack@xxxxxxxxx
>                 To: skible@xxxxxxxxxx
>                 CC: salmanmk@xxxxxxxx; openstack@xxxxxxxxxxxxxxxxxxx
>                 Date: Thu, 3 May 2012 10:21:37 +0200
>                 
>                 Fixed IP
>                 
>                 
>                 
>                 Le jeudi 03 mai 2012 à 09:15 +0100, Bilel Msekni a
>                 écrit : 
>                 
>                         Fixed IP or Floating IP ?
>                         
>                         
>                         
>                         ______________________________________________
>                         
>                         
>                         
>                         From: emilien.openstack@xxxxxxxxx
>                         To: salmanmk@xxxxxxxx
>                         Date: Thu, 3 May 2012 09:55:31 +0200
>                         CC: openstack@xxxxxxxxxxxxxxxxxxx
>                         Subject: Re: [Openstack] Instance IP
>                         assignment problem
>                         
>                         Hi,
>                         
>                         
>                         As I told you, I have also a problem for
>                         instance IP assignement.
>                         
>                         
>                         My architecture :
>                         
>                         I use Quantum with OVS plugin on 2 servers
>                         Essex-1 & Essex-2. Essex-1 runs all services
>                         and Essex-2 runs OVS, Quantum-agent &
>                         nova-compute only.
>                         
>                         You can see more details here.
>                         
>                         My configurations files are here and in my
>                         documentation.
>                         
>                         
>                         
>                         Problem Description :
>                         
>                         When an instance is created in ESSEX-1, all is
>                         working (network).
>                         
>                         But when the VM is started on ESSEX-2, it does
>                         not get an IP address. (log file)
>                         
>                         I'm sure the problem comes from OVS connection
>                         with ESSEX-1.
>                         
>                         
>                         Do I need to configure something like a trunk
>                         or a tunnel between Essex-1 & Essex-2 ?
>                         
>                         I miss something in my configuration, if you
>                         have any idea...
>                         
>                         
>                         Regards
>                         
>                         
>                         Emilien
>                         
>                         
>                         Le mardi 01 mai 2012 à 14:35 -0500, Salman
>                         Malik a écrit : 
>                         
>                                 It may help if you can share the log
>                                 of your launched instance as well.
>                                 There is a possibility that we both
>                                 are having the same issue. 
>                                 Netstack developers can give a
>                                 definitive answer to this, but it
>                                 would be interesting to learn what
>                                 goes wrong with a launched instance.
>                                 
>                                 Salman
>                                 
>                                 
>                                 
>                                 
>                                 ______________________________________
>                                 
>                                 
>                                 
>                                 
>                                 Subject: RE: [Openstack] Instance IP
>                                 assignment problem
>                                 From: emilien.openstack@xxxxxxxxx
>                                 To: salmanmk@xxxxxxxx
>                                 CC: jorge.delacruz@xxxxxxxxxxxx;
>                                 openstack@xxxxxxxxxxxxxxxxxxx
>                                 Date: Tue, 1 May 2012 21:26:26 +0200
>                                 
>                                 Le mardi 01 mai 2012 à 14:22 -0500,
>                                 Salman Malik a écrit : 
>                                 
>                                         Regarding L3 gateway, I
>                                         believe its not necessary to
>                                         have one (as the VM hasn't
>                                         obtained an IP right now, so
>                                         it can't talk to anything
>                                         outside its net), but I am not
>                                         sure.
>                                         Regarding your problem, do you
>                                         see any DHCP responses from
>                                         the DHCP server ? I am asking
>                                         this because I was having a
>                                         similar problem earlier where
>                                         I was getting assigned an IP
>                                         address no in my desired
>                                         fixed_network and I believe
>                                         that was cause by another
>                                         interfering DHCP server that
>                                         was replying to discover
>                                         messages before the
>                                         nova-network could. 
>                                         
>                                 
>                                 Here my nova.conf and I don't have any
>                                 interfering DHCP server :
>                                 
>                                 https://github.com/EmilienM/doc-openstack/blob/master/Configuration%20Files/Essex-1/nova.conf
>                                 
>                                 
>                                 Thanks
>                                 
>                                 
>                                         Salman
>                                         
>                                         
>                                         
>                                         
>                                         ______________________________
>                                         
>                                         
>                                         
>                                         
>                                         
>                                         Subject: RE: [Openstack]
>                                         Instance IP assignment problem
>                                         From:
>                                         emilien.openstack@xxxxxxxxx
>                                         To: salmanmk@xxxxxxxx
>                                         CC:
>                                         jorge.delacruz@xxxxxxxxxxxx;
>                                         openstack@xxxxxxxxxxxxxxxxxxx
>                                         Date: Tue, 1 May 2012 21:06:01
>                                         +0200
>                                         
>                                         Hi Salman,
>                                         
>                                         
>                                         I'm thinking about a
>                                         networking issue. Where is
>                                         your L3 gateway in this
>                                         architecture ? Maybe do you
>                                         need an ip helper tool to
>                                         redirect DHCP broadcast ?
>                                         
>                                         
>                                         What do you think about my
>                                         problem (follow up to my last
>                                         e-mail) ?
>                                         
>                                         
>                                         Thanks
>                                         
>                                         
>                                         Emilien
>                                         
>                                         Le mardi 01 mai 2012 à 14:00
>                                         -0500, Salman Malik a écrit : 
>                                         
>                                                 Hi,
>                                                 
>                                                 Here is the error log:
>                                                 http://pastebin.com/KrNZDrvD
>                                                 and nova.conf:
>                                                 http://pastebin.com/Fvd6dSZs
>                                                 
>                                                 Emilien, I am trying
>                                                 to get an
>                                                 understanding of how
>                                                 different Quantum
>                                                 plugins work with
>                                                 OpenStack. Ryu plugin
>                                                 is particularly
>                                                 interesting as it uses
>                                                 an OpenFlow controller
>                                                 to configure
>                                                 Vswitches.
>                                                 
>                                                 The problem I am faced
>                                                 with is  (I think )
>                                                 that I already have a
>                                                 private network and
>                                                 Quantum should assign
>                                                 IP addresses to
>                                                 instances using DHCP.
>                                                 But instances send out
>                                                 discover message on
>                                                 laucnh but never find
>                                                 a DHCP server
>                                                 (although there are 2
>                                                 dnsmasqs running). 
>                                                 
>                                                 Any ideas?
>                                                 
>                                                 Thanks,
>                                                 Salman
>                                                 
>                                                 
>                                                 
>                                                 
>                                                 ______________________
>                                                 
>                                                 
>                                                 
>                                                 
>                                                 
>                                                 
>                                                 Date: Tue, 1 May 2012
>                                                 20:43:44 +0200
>                                                 Subject: Re:
>                                                 [Openstack] Instance
>                                                 IP assignment problem
>                                                 From:
>                                                 jorge.delacruz@xxxxxxxxxxxx
>                                                 To:
>                                                 emilien.openstack@xxxxxxxxx
>                                                 CC:
>                                                 openstack@xxxxxxxxxxxxxxxxxxx; salmanmk@xxxxxxxx
>                                                 
>                                                 Hi Emilien and Salman,
>                                                 Please, could you
>                                                 upload all the files,
>                                                 errors and conf in
>                                                 pastebin or something
>                                                 like that? 
>                                                 I have troubles to
>                                                 open in phone :)
>                                                 Thank you
>                                                 El 01/05/2012 20:39,
>                                                 "Emilien Macchi"
>                                                 <emilien.openstack@xxxxxxxxx> escribió:
>                                                 
>                                                         Hi,
>                                                         
>                                                         
>                                                         I have a
>                                                         similar
>                                                         problem when I
>                                                         create a
>                                                         network per
>                                                         project_id
>                                                         with Quantum.
>                                                         
>                                                         
>                                                         My VMs don't
>                                                         get IP and I
>                                                         can't
>                                                         understand why
>                                                         today.
>                                                         
>                                                         But when I
>                                                         create a
>                                                         private
>                                                         network for
>                                                         all projects,
>                                                         VMs get an IP
>                                                         and all is
>                                                         working well.
>                                                         Do you have
>                                                         the same
>                                                         problem ?
>                                                         
>                                                         
>                                                         Salman, I'm
>                                                         interesting
>                                                         about your
>                                                         nova.conf. I
>                                                         can see you
>                                                         are using
>                                                         Ryu ?
>                                                         Can you tell
>                                                         me more about
>                                                         your "use
>                                                         case" or
>                                                         architecture ?
>                                                         
>                                                         
>                                                         Thanks
>                                                         
>                                                         
>                                                         Le mardi 01
>                                                         mai 2012 à
>                                                         12:28 -0500,
>                                                         Salman Malik a
>                                                         écrit : 
>                                                         
>                                                                 Hi
>                                                                 Jorge,
>                                                                 
>                                                                 Thanks
>                                                                 for
>                                                                 looking into the post.
>                                                                 I have
>                                                                 made
>                                                                 changes to the nova.conf file so that I only use 10.0.0.x network (but the problem is still the same). For this configuration, I assume that it will give out IPs to instances starting from 10.0.0.11. And just to inform you, my eth1 is configured to be 10.0.0.10 (which is a VM itself, and eth1 is configured as a host-only network with no DHCP) and this interface is plugged in the integration bridge used by quantum plugins.
>                                                                 
>                                                                 Thanks,
>                                                                 Salman
>                                                                 
>                                                                 PS:
>                                                                 Error
>                                                                 log of
>                                                                 a
>                                                                 launched instance is also attached.
>                                                                 
>                                                                 
>                                                                 
>                                                                 
>                                                                 ______
>                                                                 
>                                                                 
>                                                                 
>                                                                 
>                                                                 
>                                                                 
>                                                                 
>                                                                 Date:
>                                                                 Tue, 1
>                                                                 May
>                                                                 2012
>                                                                 19:03:49 +0200
>                                                                 Subject: Re: [Openstack] Instance IP assignment problem
>                                                                 From:
>                                                                 jorge.delacruz@xxxxxxxxxxxx
>                                                                 To:
>                                                                 salmanmk@xxxxxxxx
>                                                                 CC:
>                                                                 openstack@xxxxxxxxxxxxxxxxxxx
>                                                                 
>                                                                 Im not
>                                                                 really
>                                                                 sure
>                                                                 but
>                                                                 you
>                                                                 are
>                                                                 using
>                                                                 range
>                                                                 for
>                                                                 your
>                                                                 environment 10.0.3.x and 10.0.0.x for fixed.
>                                                                 Can
>                                                                 you
>                                                                 attach
>                                                                 a nova
>                                                                 network conf?
>                                                                 Regards
>                                                                 El
>                                                                 01/05/2012 18:56, "Salman Malik" <salmanmk@xxxxxxxx> escribió:
>                                                                 
>                                                                         Hi Guys,
>                                                                         
>                                                                         Can anyone provide any insight to the following question:
>                                                                         https://answers.launchpad.net/nova/+question/195439
>                                                                         
>                                                                         Thanks,
>                                                                         Salman
>                                                                         
>                                                                         
>                                                                         _______________________________________________
>                                                                         Mailing list: https://launchpad.net/~openstack
>                                                                         Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>                                                                         Unsubscribe : https://launchpad.net/~openstack
>                                                                         More help   : https://help.launchpad.net/ListHelp
>                                                                         
>                                                                 
>                                                                 _______________________________________________
>                                                                 Mailing list: https://launchpad.net/~openstack
>                                                                 Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>                                                                 Unsubscribe : https://launchpad.net/~openstack
>                                                                 More help   : https://help.launchpad.net/ListHelp
>                                                         
>                                                         
>                                                         
>                                         
>                                         
>                                         
>                                 
>                                 
>                                 
>                         
>                         
>                         
>                         _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@xxxxxxxxxxxxxxxxxxx Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
>                 
>                 
>                 
>         
>         
>         
> 
> 
> 


References