[ovirt-users] Multiple ips to a single nic

[Shanil S]

Hi Juan,

Okay.. Thanks.. i will check it with your solution.

-- 
Regards
Shanil

On Tue, Sep 16, 2014 at 8:23 PM, Juan Hernandez <jhernand at redhat.com> wrote:

> On 09/16/2014 11:46 AM, Shanil S wrote:
> > Hi All,
> >
> > I would like to add multiple ips to a single nic using the ovirt api
> > function. Is it possible to assign multiple ips to a single nic using
> > the ovirt api ?
> >
>
> Remember that you can't set any IP configuration of a network interface
> from outside the guest, so you need to use cloud-init or similar. With
> cloud-init you can use the "nic" element several times, using names like
> eth0:0, eth0:1, etc:
>
> <action>
>   <vm>
>     <initialization>
>       <cloud_init>
>         <network_configuration>
>           <nics>
>             <nic>
>               <name>eth0</name>
>               <boot_protocol>static</boot_protocol>
>               <network>
>                 <ip address="192.168.122.31" netmask="255.255.255"
> gateway="192.168.122.1"/>
>               </network>
>               <on_boot>true</on_boot>
>             </nic>
>             <nic>
>               <name>eth0:0</name>
>               <boot_protocol>static</boot_protocol>
>               <network>
>                 <ip address="192.168.122.32" netmask="255.255.255.0"
> gateway="192.168.122.1"/>
>               </network>
>               <on_boot>true</on_boot>
>             </nic>
>             <nic>
>               <name>eth0:1</name>
>               <boot_protocol>static</boot_protocol>
>               <network>
>                 <ip address="192.168.122.33" netmask="255.255.255.0"
> gateway="192.168.122.1"/>
>               </network>
>               <on_boot>true</on_boot>
>             </nic>
>           </nics>
>         </network_configuration>
>       </cloud_init>
>     </initialization>
>   </vm>
> </action>
>
> This will produce a network configuration file like this:
>
> iface eth0 inet static
>   address 192.168.122.31
>   netmask 255.255.255
>   gateway 192.168.122.1
> iface eth0:0 inet static
>   address 192.168.122.32
>   netmask 255.255.255.0
>   gateway 192.168.122.1
> iface eth0:1 inet static
>   address 192.168.122.33
>   netmask 255.255.255.0
>   gateway 192.168.122.1
> auto eth0 eth0:0 eth0:1
>
> Cloud-init should then translate that into the correct configuration
> within the host. It should work correctly in RHEL/Fedora, but I guess
> this isn't a contract of cloud-init, so it may fail in other distros or
> in future versions.
>
> Anyhow, you may consider adding multiple network interfaces to the VM,
> instead of multiple IPs in the same interface. They don't cost anything
> and give you more flexibility if you want to physically separate networks.
>
> --
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