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Re: Allocating dynamic IP to the VMs

 

Thanks Sylvain,

I have tried this, but does not seem to work. I can allocate the floating
ip to the VM but it is not accessible from the physical network. I can not
ping to it from the controller or any other physical nodes.

Any idea?

On 19 March 2013 16:14, Sylvain Bauza <sylvain.bauza@xxxxxxxxxxxx> wrote:

>  As per
> http://docs.openstack.org/folsom/openstack-network/admin/content/demo_logical_network_config.htmlbut slightly modified as per CLI help,
>
> quantum net-create ext_net --tenant-id $TENANT_ID --router:external=True
> quantum subnet-create --ip_version 4 --allocation-pool start=192.168.2.151,end=192.168.2.240 \
>  --gateway 192.168.2.253 <id_of_ext_net> 192.168.2.0/24 -- --enable_dhcp=False
>
>
> It will create ext_net subnet with preallocated IP range. For each VM,
> allocate floating IP from this pool and then associate it with the internal
> port.
>
> Hope it can helps,
> -Sylvain
>
> Le 19/03/2013 13:44, Chathura M. Sarathchandra Magurawalage a écrit :
>
> Thanks.
>
>  its 192.168.2.0/24
>
>  free ip range: 192.168.2.151 192.168.2.240
>
>  gw/dhcp server: 192.168.2.253
>
>
> On 19 March 2013 08:28, Sylvain Bauza <sylvain.bauza@xxxxxxxxxxxx> wrote:
>
>>  In that case, please refer to my previous e-mail : use floating IPs
>> bound to the same physical network.
>> That's up to you to know which IP pools are available inside your
>> network. Once you get one, create a external Quantum subnet defined with
>> this IP range.
>>
>> Sorry, I have feeling to explain again and again. If you still don't
>> catch the point, could you please then tell me your physical net/CIDR, your
>> free IP range and your gateway, and I'll mix you up the command to issue.
>>
>> -Sylvain
>>
>> Le 18/03/2013 18:02, Chathura M. Sarathchandra Magurawalage a écrit :
>>
>>  Thanks Sylvain,
>>
>>  There must be a way of doing this without having to do anything with my
>> default gateway of my physical network? . Even if I have to I do not wan to
>> do anything to the physical gateway. All I need is a way to let the VMs get
>> a dynamic IP from the physical network. How can I do this. For example this
>> can be done on virtual box using a bridge adapter which maps the VM in to
>> the physical network.
>>
>> On 18 March 2013 16:05, Sylvain Bauza <sylvain.bauza@xxxxxxxxxxxx> wrote:
>>
>>>  Could you please tell me your "physical network" CIDR ?
>>> Anyway, what you need is not requiring having a floating IP pool inside
>>> the same network, you can also play with static routing : if your physical
>>> host does have a default gw, you can create a static route from this gw to
>>> the VM network gateway. And on the VM network gateway, do the same...
>>>
>>> -Sylvain
>>>
>>> Le 18/03/2013 16:53, Chathura M. Sarathchandra Magurawalage a écrit :
>>>
>>>   Hey Sylvain,
>>>
>>>  Basically what I need is to have the VMs mapped to my physical network
>>> so that my physical hosts can directly access the VMs. How can I do this?
>>>
>>>  Thanks.
>>>
>>>
>>> On 18 March 2013 15:50, Sylvain Bauza <sylvain.bauza@xxxxxxxxxxxx>wrote:
>>>
>>>>  Hi,
>>>>
>>>> I don't understand your business. Should you have a 192.168.1.0/24network for management, you could also assign an external network with
>>>> Quantum based on the same subnet (ie. 192.168.1.0/24).
>>>> When creating a floating IP pool, Quantum does require at least 3
>>>> things :
>>>>  - the CIDR
>>>>  - the beginning and ending IPs
>>>>  - the external gateway
>>>>
>>>> So, based on what I previously said, you only need to create a
>>>> 192.168.1.0/24 in Quantum with .1-.100 (for example) as the range,
>>>> .254 being the external gateway.
>>>>
>>>> Thanks,
>>>> -Sylvain
>>>>
>>>> Le 18/03/2013 16:29, Chathura M. Sarathchandra Magurawalage a écrit :
>>>>
>>>>  anyone?
>>>>
>>>> On 17 March 2013 21:33, Chathura M. Sarathchandra Magurawalage <
>>>> 77.chathura@xxxxxxxxx> wrote:
>>>>
>>>>> After reading a little bit more, I think I have found what I need. It
>>>>> is  a provider network that I need for the VMs so that they can get access
>>>>> to the other resources in my main network ( such as other physical hosts
>>>>> that are connected to the same network ).
>>>>>
>>>>>  My question is, is it possible to do this alongside the use case
>>>>> that I have followed ( Provider router with private networks)?
>>>>>
>>>>>  If so how can I do this?
>>>>>
>>>>>  Thanks.
>>>>>
>>>>>
>>>>>   On 16 March 2013 01:46, Chathura M. Sarathchandra Magurawalage <
>>>>> 77.chathura@xxxxxxxxx> wrote:
>>>>>
>>>>>>  Hello,
>>>>>>
>>>>>>  I want to know how I can allocate a dynamic IP to the VM from the
>>>>>> same network as the openstack hosts (controller/network-node/compute node)
>>>>>> network/management network . For example, in virtual box you can give your
>>>>>> VM an IP from the host's network using a Bridge adapter. How can I do this
>>>>>> in openstack?
>>>>>>
>>>>>>  From what I understand floating IP's are used when you have a
>>>>>> public IP
>>>>>>  (which is static) to be allocated to VM's.
>>>>>>
>>>>>> My openstack installation architecture:
>>>>>>
>>>>>> http://docs.openstack.org/folsom/basic-install/content/basic-install_architecture.html
>>>>>>
>>>>>>  Quantum use case:
>>>>>>
>>>>>> http://docs.openstack.org/trunk/openstack-network/admin/content/use_cases_single_router.html
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>  _______________________________________________
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>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>

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