[one-users] Incorrect netmask on virtual machines

Tue Sep 24 04:47:27 PDT 2013

Hi Javier,

The output of "onevm show <network id>" does give the correct information, however, I have noticed that in the CONTEXT=[] statement, I have the variable ETH0_NETWORK set to "10.54.136.0", and looking at the context script in the (Debian) VM - /etc/one-context.d/00-network - it seems to take that and use it to generate netmask and default gateway from the VM, thus ending up with the both an incorrect netmask, and an incorrect gateway.

Why would this be happening?

Thanks

Jerry

-----Original Message-----
From: users-bounces at lists.opennebula.org [mailto:users-bounces at lists.opennebula.org] On Behalf Of Javier Fontan
Sent: 24 September 2013 10:40
To: steele, jerry
Cc: users at lists.opennebula.org
Subject: Re: [one-users] Incorrect netmask on virtual machines

Are you getting correct data in your deployed VM? That is, that in the output of "onevm show <vmid>" the context section has the values it is supposed to have.

On Thu, Sep 19, 2013 at 3:26 PM, steele, jerry <Jerry.Steele at cgg.com> wrote:
> Hi Javier,
>
> Thanks for your reply. Unfortunately, I'm on version 4.0.1 due to OS
> restrictions, I guess the Sunstone interface gets a bit better as time
> goes on :)
>
> Hello, I have this network context in the template:
>>>>
> ETH0_DNS        $NETWORK[DNS,NETWORK_ID="3"]
> SSH_PUBLIC_KEY  $USER[SSH_PUBLIC_KEY]
> ETH0_IP         $NIC[IP,NETWORK_ID="3"]
> ETH0_IPV6       $NIC[IP6_GLOBAL,NETWORK_ID="3"]
> ETH0_GATEWAY    $NETWORK[GATEWAY,NETWORK_ID="3"]
> ETH0_NETWORK    $NETWORK[NETWORK_ADDRESS,NETWORK_ID="3"]
> ETH0_GATEWAY6   $NETWORK[GATEWAY6,NETWORK_ID="3"]
> ETH0_CONTEXT_FORCE_IPV4         $NETWORK[CONTEXT_FORCE_IPV4,NETWORK_ID="3"]
> ETH0_MASK       $NETWORK[NETWORK_MASK,NETWORK_ID="3"]
> <<<
> So I guess it would be wise to also show the virtual network description:
>>>>
> VIRTUAL NETWORK 3 INFORMATION
> ID             : 3
> NAME           : VLAN 44 Bridge
> USER           : oneadmin
> GROUP          : oneadmin
> CLUSTER        : -
> TYPE           : FIXED
> BRIDGE         : br0
> VLAN           : No
> USED LEASES    : 2
>
> PERMISSIONS
> OWNER          : um-
> GROUP          : ---
> OTHER          : ---
>
> VIRTUAL NETWORK TEMPLATE
> DNS="10.54.128.235,10.50.16.235,10.50.16.231"
> GATEWAY="10.54.143.254"
> NETWORK_MASK="255.255.248.0"
>
> USED LEASES
> LEASE=[ MAC="02:00:0a:36:88:98", IP="10.54.136.152",
> IP6_LINK="fe80::400:aff:fe36:8898", USED="1", VID="23" ] LEASE=[
> MAC="02:00:0a:36:88:99", IP="10.54.136.153",
> IP6_LINK="fe80::400:aff:fe36:8899", USED="1", VID="24" ]
>
> FREE LEASES
> LEASE=[ MAC="02:00:0a:36:88:96", IP="10.54.136.150",
> IP6_LINK="fe80::400:aff:fe36:8896", USED="0", VID="-1" ] LEASE=[
> MAC="02:00:0a:36:88:97", IP="10.54.136.151",
> IP6_LINK="fe80::400:aff:fe36:8897", USED="0", VID="-1" ] LEASE=[
> MAC="02:00:0a:36:88:9a", IP="10.54.136.154",
> IP6_LINK="fe80::400:aff:fe36:889a", USED="0", VID="-1" ] LEASE=[
> MAC="02:00:0a:36:88:9b", IP="10.54.136.155",
> IP6_LINK="fe80::400:aff:fe36:889b", USED="0", VID="-1" ] LEASE=[
> MAC="02:00:0a:36:88:9c", IP="10.54.136.156",
> IP6_LINK="fe80::400:aff:fe36:889c", USED="0", VID="-1" ] LEASE=[
> MAC="02:00:0a:36:88:9d", IP="10.54.136.157",
> IP6_LINK="fe80::400:aff:fe36:889d", USED="0", VID="-1" ] <<<
>
> The leases are set so that the VMs may only use a few addresses, as this is on our LAN, and only a few IPs are available, not the entire range.
>
> There's probably some mistakes there in the config somewhere, but not sure where they are.
>
> Thanks
>
> Jerry
>
>
> -----Original Message-----
> From: Javier Fontan [mailto:jfontan at opennebula.org]
> Sent: 19 September 2013 13:56
> To: steele, jerry
> Cc: users at lists.opennebula.org
> Subject: Re: [one-users] Incorrect netmask on virtual machines
>
> I suppose you already have contextualization package installed in you VM as you are getting the correct IP.
>
> The problem most probably comes because the VM (template) does not
> have a CONTEXT section with network information. If you are using
> Sunstone and OpenNebula 4.2 you can add that information checking
> Context->Add network contextualization in the template creation
> wizzard.
>
> On Tue, Sep 17, 2013 at 11:10 AM, steele, jerry <Jerry.Steele at cgg.com> wrote:
>> Hello,
>>
>>
>>
>> I'm fairly new to Opennebula - I've just set up my first trio of test
>> machines.
>>
>>
>>
>> I'd like the VMs to appear on my LAN, and as such have set up a
>> virtual network to dole out a pool of addresses to any VMs that I create.
>>
>>
>>
>> I've set a netmask of 255.255.248.0 in the virtual network template,
>> however, when the VMs get created, their NICs are configured with a
>> netmask of 255.255.255.0. I can ping other machines on my network
>> withink that range of IPs - so I know the VMs are on the network -
>> but that doesn't really help me much.
>>
>>
>>
>> I think it's something to do with contextualisation, or maybe the
>> network config on the host system, but my lack of experience has me
>> at a disadvantage here, I'm afraid.
>>
>>
>>
>> Rather than reproduce lots of console output here, could anyone who
>> wants to know more for troubleshooting purposes, please let me know what to provide?
>>
>>
>>
>> Many Thanks
>>
>>
>>
>> _____ ______ ______
>>
>>
>>
>>
>>
>> Jerry Steele
>>
>> IT Support Specialist
>>
>> Subsurface Imaging
>>
>>
>>
>> CGGVeritas Services (UK) Ltd
>>
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>>
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>>
>> W Sussex
>>
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>>
>>
>>
>> T              +44 (0)1293 683264 (Internal: 233264)
>>
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>>
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>>
>>
>>
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>
>
>
> --
> Join us at OpenNebulaConf2013 in Berlin from the 24th to the 26th of September 2013!
>
> Javier Fontán Muiños
> Developer
> OpenNebula - The Open Source Toolkit for Data Center Virtualization
> www.OpenNebula.org | @OpenNebula | github.com/jfontan
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Join us at OpenNebulaConf2013 in Berlin from the 24th to the 26th of September 2013!

Javier Fontán Muiños
Developer
OpenNebula - The Open Source Toolkit for Data Center Virtualization www.OpenNebula.org | @OpenNebula | github.com/jfontan _______________________________________________
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