Re: [javagroups-users] How to get the IP address of a member

[Bela B. <be...@ya...>]

You could do both. When a new member starts, after joining the cluster 
it could broadcast its IP address via a message. Any node could also 
send a request message, asking a node for its address, in case it 
doesn't have it.

When a new member starts, everyone could send its information to it.


An alternative could be to use the logical name of a channel. You could 
name a channel on 192.168.1.5 port 7500 "<hostname>-192.168.1.5:7500", 
then Channel.getName() would return it.




On 1/25/11 4:17 PM, Dov Rosenberg wrote:
> Would that be a one time broadcast or would there be some sort of
> interrogation protocol? I am interested from a perspective of being able to
> identify the hosts in the network and potentially provide some sort of
> system management capability for our apps
>
>
> Thanks
>
> Dov Rosenberg
>
> On 1/25/11 9:56 AM, "Tom van Zummeren"<to...@jt...>  wrote:
>
>> Broadcasting it was my alternative idea. But it just sounded more obvious to
>> me if JGroups could provide me with this information. But if it is not
>> recommended to ask JGroups for the IP address I will not do that and broadcast
>> the IP instead.
>>
>> Thanks again!
>>
>>
>> On Jan 25, 2011, at 3:49 PM, Bela Ban wrote:
>>
>>> JChannel ch;
>>>
>>> PhysicalAddress addr=(PhysicalAddress)ch.downcall(new
>>> Event(Event.GET_PHYSICAL_ADDRESS, ch.getAddress()));
>>> if(addr instanceof IpAddress) {
>>>      // downcast and use
>>> }
>>>
>>>
>>> HOWEVER, this is *not* recommended, as the GET_PHYSICAL_ADDRESS is an
>>> internal event, and might get changed anytime...
>>>
>>> If you need this info, why don't you broadcast it via your app ?
>>>
>>>
>>> On 1/25/11 3:13 PM, Tom van Zummeren wrote:
>>>> Hi Bela,
>>>>
>>>> In my application I need to discover the IP address (InetAddress actually)
>>>> of all members in the group. Is there a way to ask JChannel for the IP
>>>> address for example? All I get now is a generic Address instance which
>>>> identifies a member but does not contain an IP address (it uses UUID as the
>>>> Address implementation).
>>>>
>>>
-- 
Bela Ban
Lead JGroups / Clustering Team
JBoss