Re: Connecting spread daemons with different segment configurations

Ed Holyat <[email protected]> Thu, 29 Jan 2015 12:44:39 +0000
Newsgroups gmane.network.spread.user
Message-ID <[email protected]>
Seems to me you're trying to segment the network through daemon configurati=
on when you should me segmenting the network through group membership =



> On Jan 29, 2015, at 7:40 AM, Yair Amir <[email protected]> wrote:
> =

> I am not sure what you are trying to achieve.
> But if clients on 2 are not allowed to talk with clients on 3,
> then perhaps what you are after can be solved with 2 Spread configurations
> with 2 different daemons running on server 1 (on two different ports).
> =

> This way, clients on server 1 can just connect to the 2 daemons on server=
 1
> and join the same groups on both.
> =

> Clients on each of server 2 and server 3 will connect to their local
> daemon and then will never be able to see clients on the other server (of=
 2 and 3).
> =

> How about that?
> =

>    :) Yair.
> =

> =

> =

>> On 1/29/15 7:25 AM, Timo Korthals wrote:
>> Hi Yair,
>> =

>> thanks for the answer, but I think that your case does not meet my
>> requirements if I understand your setup in the right way.
>> If there is just one daemon on 1. running, the spread clients on 2. and
>> 3. are able to talk to each other.
>> The other point why I want to use this multi daemon setup, is that the
>> daemons on 2. and 3. can handle the breakaway of the connection in a
>> wifi scenario with bad quality.
>> In your case the clients needs to handle faulty connections on their own.
>> =

>> Kind regards,
>> Timo
>> =

>> =

>> Timo Korthals, M.Sc.
>> Universit=E4t Bielefeld
>> AG Kognitronik & Sensorik
>> Exzellenzcluster Cognitive Interaction Technology (CITEC)
>> Inspiration 1 (Zehlendorfer Damm 199)
>> 33619 Bielefeld - Germany
>> =

>> Office  : 3.037
>> Phone   : +49 521 106-67368
>> eMail   : [email protected]
>> Internet: http://www.ks.cit-ec.uni-bielefeld.de/
>> =

>>> On 29.01.2015 13:06, Yair Amir wrote:
>>> Dear Timo,
>>> =

>>> To implement your scenario, what you want is to just have a single
>>> Spread daemon in your
>>> configuration - just have server 1.
>>> =

>>> The other two should just connect as clients. This seems exactly what
>>> you want.
>>> =

>>> Let me know if you think I misunderstood something.
>>> =

>>> Best,
>>> =

>>>     :) Yair.
>>> =

>>>> On 1/29/15 5:20 AM, Timo Korthals wrote:
>>>> Dear Spread users,
>>>> =

>>>> we are using spread daemons for our distributed robot network.
>>>> We know already, that each device needs exact the same configuration
>>>> regarding the segments, otherwise the spread daemons wont connect to
>>>> each other.
>>>> But is there a way to not have the same segment configurations?
>>>> So lets assume the following scenario of three participants {1,2,3}.
>>>> =

>>>> *1. is a server, which knows the participants 2 and 3*
>>>> /spreadOne.conf:/
>>>> Spread_Segment  192.168.0.255:4803 {
>>>>          one               192.168.0.1
>>>> }
>>>> Spread_Segment  192.168.0.255:4803 {
>>>>          two               192.168.0.2
>>>> }
>>>> Spread_Segment  192.168.0.255:4803 {
>>>>          three               192.168.0.3
>>>> }
>>>> =

>>>> *2. and 3. are just clients, which are allowed to talk with the
>>>> server, but not with each other*
>>>> /spreadTwo.conf:/
>>>> Spread_Segment  192.168.0.255:4803 {
>>>>          one               192.168.0.1
>>>> }
>>>> Spread_Segment  192.168.0.255:4803 {
>>>>          two               192.168.0.2
>>>> }
>>>> =

>>>> /spreadThree.conf:/
>>>> Spread_Segment  192.168.0.255:4803 {
>>>>          one               192.168.0.1
>>>> }
>>>> Spread_Segment  192.168.0.255:4803 {
>>>>          three               192.168.0.3
>>>> }
>>>> =

>>>> =

>>>> Obviously this does not work with spread, am I right?
>>>> But if so, how can I make it work?
>>>> Is spread just comparing the hashes of the configs, and refusing
>>>> connections, if hashes mismatch?
>>>> What happens if I remove the checks regarding the configuration check?
>>>> Has anyone done this before?
>>>> =

>>>> Greetings,
>>>> Timo
>>>> =

>>>> --
>>>> =

>>>> Timo Korthals, M.Sc.
>>>> Universit=E4t Bielefeld
>>>> AG Kognitronik & Sensorik
>>>> Exzellenzcluster Cognitive Interaction Technology (CITEC)
>>>> Inspiration 1 (Zehlendorfer Damm 199)
>>>> 33619 Bielefeld - Germany
>>>> =

>>>> Office  : 3.037
>>>> Phone   : +49 521 106-67368
>>>> eMail   :[email protected]
>>>> Internet:http://www.ks.cit-ec.uni-bielefeld.de/
>>>> =

>>>> =

>>>> =

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>> =

>> =

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