[Openstack] Απάντηση: Re: Documentation Error??

Georgios Dimitrakakis giorgis at acmac.uoc.gr
Thu Nov 20 08:53:26 UTC 2014


 Yes!

 I am planning to assign 133.* IP addresses to all guest instances.

 Best,

 George

 On Thu, 20 Nov 2014 02:42:08 +0000, Aaron Segura wrote:
> Okay, I believe I see what youre going for now.  Are you planning on
> assigning 133.* addresses directly to your guest instances? 
>
> On Wed Nov 19 2014 at 5:53:36 PM Dimitrakakis Georgios  wrote:
>
>> Sorry about the confusion!
>>
>> I have two nodes, with two network interfaces each. One configured
>> with 192.* IP and one with 133.*
>> I can access them with SSH directly at 133.*
>>
>> Both nodes can ping one another and both nodes can ping Internet
>> addresses e.g.  google. com
>>
>> No other router available for configuration.
>> No openstack yet.
>>
>> So, my question is the following :
>>
>> If I want to install openstack should I modify the external network
>> interface so that it doesnt have an IP address?  If I do that how
>> can I access the server then?
>>
>> I was under the impression that the document was talking about a
>> situation like the above when it clearly doesnt. Thats why I am
>> looking for new guidelines.
>>
>> All the best,
>>
>> George
>>
>> ---- Ο χρήστης Aaron Segura έγραψε ----
>>
>> Im not sure I understand.  Are you able to ping from your nodes out
>> to the internet at all?
>>
>> On Wed Nov 19 2014 at 3:29:54 PM Georgios Dimitrakakis wrote:
>>
>>>  Aaron it helps a lot and thank you for that.
>>>
>>>  Unfortunately in my setup there is no router for the management
>>>  interface since it is much simpler and has two interfaces: one
>>> that has
>>>  an external IP and connects directly to the internet and a
>>> second one
>>>  with internal (management) network that cannot be reached from
>>> the
>>>  outside. In such a case can you recommend a setup or point me
>>> at a
>>>  documentation?
>>>
>>>  Thanks a lot again,
>>>
>>>  George
>>>
>>>  On Wed, 19 Nov 2014 20:39:10 +0000, Aaron Segura wrote:
>>> > When the documentation refers to testing external connectivity
>>> from
>>> > the nodes, it does not mean to test connectivity via the
>>> External
>>> > Interface, irself.  It means that you should be able to reach
>>> the
>>> > external network (Internet) and the other nodes, from each
>>> node, via
>>> > the Management Interface.  The Management Interface is how you
>>> will
>>> > log in to the nodes via SSH, as well.  The network attached to
>>> your
>>> > Management Interface should have a route out to the Internet
>>> and
>>> > provide all the connectivity you need to manage the node,
>>> install
>>> > software, etc...
>>> >
>>> > Hope that helps!
>>> >
>>> > On Wed Nov 19 2014 at 2:19:07 PM Georgios Dimitrakakis  wrote:
>>> >
>>> >>  First of all let me thank you very much for your clear
>>> replies!
>>> >>
>>> >>  Yes! That makes sense indeed for the Virtual Machines!
>>> >>
>>> >>  What about the compute node itself? If I am not wrong at
>>> that
>>> >> point of
>>> >>  documentation nova-network hasnt been installed or
>>> configured. So
>>> >> how
>>> >>  is it possible the connectivity tests with the external
>>> network
>>> >> to be
>>> >>  successful as shown at that point?
>>> >>
>>> >>  Furthermore if someone wants to have direct SSH access to
>>> the
>>> >> node from
>>> >>  the external network how is that achieved? In general how
>>> does
>>> >> the
>>> >>  physical node itself access the external network?
>>> >>
>>> >>  All the best,
>>> >>
>>> >>  George
>>> >>
>>> >>  On Wed, 19 Nov 2014 14:25:29 +0000, Aaron Segura wrote:
>>> >> > Think of your external interface as if it were a switch. The
>>> >> guests
>>> >> > are plugged in to the switch. They will have IP addresses
>>> that
>>> >> allow
>>> >> > them to communicate on the network. The physical interface
>>> just
>>> >> ships
>>> >> > packets back and forth between physical and virtual
>>> networks, and
>>> >> > doesnt need its own address. Make more sense?
>>> >> >
>>> >> > On Wed, Nov 19, 2014, 07:53 Georgios Dimitrakakis  wrote:
>>> >> >
>>> >> >>  Hello stackers!
>>> >> >>
>>> >> >>  In OpenStack documentation and specifically on Legacy
>>> >> Networking
>>> >> >>
>>> >> >>
>>> >> >
>>> >> >
>>> >>
>>> >
>>> >
>>>
>>
> 
>  http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
>>> [1]
>>> >> [1]
>>> >> >> [1]
>>> >> >>
>>> >> >>  says clearly that for a two node installation the
>>> interface
>>> >> >> dedicated
>>> >> >>  to the external network should not be configured with an
>>> IP
>>> >> >> address.
>>> >> >>
>>> >> >>  Is this correct??
>>> >> >>
>>> >> >>  Furthermore at the "Verify Connectivity" part is pinging
>>> >> >> successfully
>>> >> >>  on the external network and my question is how is this
>>> >> happening?
>>> >> >> Does
>>> >> >>  it assume that there is a third interface already
>>> connected on
>>> >> >> the
>>> >> >>  external network??
>>> >> >>
>>> >> >>  How is accessing the external network without even
>>> configuring
>>> >> >> the
>>> >> >>  interface dedicated at it?? Does it assume that the
>>> internal
>>> >> >> network
>>> >> >>  somehow performs a routing??
>>> >> >>
>>> >> >>  Best regards,
>>> >> >>
>>> >> >>  G.
>>> >> >>
>>> >> >> _______________________________________________
>>> >> >> Mailing list:
>>> >> >>
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [2]
>>> >> [2] [2]
>>> >> >> Post to     : openstack at lists.openstack.org [3] [3] [3]
>>> >> >> Unsubscribe :
>>> >> >>
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [4]
>>> >> [4] [4]
>>> >> >
>>> >> >
>>> >> > Links:
>>> >> > ------
>>> >> > [1]
>>> >> >
>>> >> >
>>> >>
>>> >
>>> >
>>>
>>
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
>>> [5]
>>> >> [5]
>>> >> > [2]
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [6]
>>> >> [6]
>>> >> > [3] mailto:openstack at lists.openstack.org [7] [7]
>>> >> > [4]
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [8]
>>> >> [8]
>>> >> > [5] mailto:giorgis at acmac.uoc.gr [9] [9]
>>> >
>>> >
>>> > Links:
>>> > ------
>>> > [1]
>>> >
>>> >
>>>
>>
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
>>> [10]
>>> > [2]
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [11]
>>> > [3] mailto:openstack at lists.openstack.org [12]
>>> > [4]
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [13]
>>> > [5]
>>> >
>>> >
>>>
>>
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
>>> [14]
>>> > [6]
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [15]
>>> > [7] mailto:openstack at lists.openstack.org [16]
>>> > [8]
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [17]
>>> > [9] mailto:giorgis at acmac.uoc.gr [18]
>>> > [10] mailto:giorgis at acmac.uoc.gr [19]
>>
>>> --
>
>
> Links:
> ------
> [1]
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
> [2] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [3] mailto:openstack at lists.openstack.org
> [4] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [5]
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
> [6] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [7] mailto:openstack at lists.openstack.org
> [8] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [9] mailto:giorgis at acmac.uoc.gr
> [10]
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
> [11] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [12] mailto:openstack at lists.openstack.org
> [13] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [14]
> 
> http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova
> [15] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [16] mailto:openstack at lists.openstack.org
> [17] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> [18] mailto:giorgis at acmac.uoc.gr
> [19] mailto:giorgis at acmac.uoc.gr
> [20] mailto:giorgis at acmac.uoc.gr
> [21] mailto:giorgis at acmac.uoc.gr




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