[one-users] Incorrect netmask on virtual machines

Thu Sep 19 06:26:52 PDT 2013

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

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