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https://issues.jboss.org/browse/AS7-430?page=com.atlassian.jira.plugin.sy...
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Brian Stansberry commented on AS7-430:
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Log of a chat I had with Kabir:
[6/20/12 3:14:19 PM] Brian Stansberry: ideally at some point we'll add other
mechanisms for "discovering" the DC
[6/20/12 3:14:38 PM] Brian Stansberry: multicast, maybe Amazon S3 or equivalents
[6/20/12 3:15:17 PM] Brian Stansberry: so, when designing the API/xml it's good to
think those things through
[6/20/12 3:15:50 PM] Kabir Khan: At least I have some knowledge of EC2 now
[6/20/12 3:16:40 PM] Kabir Khan: or you said s3
[6/20/12 3:17:10 PM] Brian Stansberry: well, S3 is where shared state can be stored, i.e.
address/port of the DC
[6/20/12 3:17:26 PM] Brian Stansberry: so slaves are configured with info needed to access
S3 and get the data
[6/20/12 3:18:15 PM] Brian Stansberry: JGroups S3_PING protocol works that way -- it's
a "discovery" protocol used when a peer needs to figure out who's in the
group so it can join
[6/20/12 3:19:06 PM] Kabir Khan: So the simple initial version would have hard-wired ip
addresses, but needs to be flexible enough to use other mechanisms for discovery
[6/20/12 3:19:56 PM] Brian Stansberry: really, discovery and backup could be considered
semi-separate things
[6/20/12 3:20:11 PM] Brian Stansberry: i.e. right now we have hard-wired discovery
[6/20/12 3:20:20 PM] Brian Stansberry: and we need to add backup
[6/20/12 3:20:28 PM] Brian Stansberry: later we need to add other forms of discovery
[6/20/12 3:21:10 PM] Brian Stansberry: the trick is to figure out how to best represent
those concepts in the xml and in the mgmt resources
[6/20/12 3:21:33 PM] Kabir Khan: Yeah, I'll give it some thought
[6/20/12 3:21:51 PM] Brian Stansberry: although, backup could just be handled as an
ordered list of discovery options
[6/20/12 3:22:24 PM] Brian Stansberry: so anytime a master needs to be contacted, loop
through all the provided options
[6/20/12 3:23:26 PM] Brian Stansberry: thinking about it more, that's probably
conceptually cleanest
DomainController discovery system
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Key: AS7-430
URL:
https://issues.jboss.org/browse/AS7-430
Project: Application Server 7
Issue Type: Task
Components: Domain Management
Reporter: Brian Stansberry
Assignee: Farah Juma
Fix For: 7.2.0.CR1
Mechanism(s) by which a Host Controller finds a Domain Controller so it can begin the
process of integrating into the domain.
Task includes the host.xml schema elements to configure this, the domain object model
classes behind those elements, and the actual implementation of discovery from both the
ServerManager and DomainController sides.
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