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From "Alan Conway (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-4100) New HA federation links do not fail over
Date Thu, 02 Aug 2012 16:02:02 GMT

    [ https://issues.apache.org/jira/browse/QPID-4100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13427405#comment-13427405

Alan Conway commented on QPID-4100:

Proposal to fix the bug:

1. For the security issue: stop using management for HA replication.
HA code will send store-encoded objects to a separate qpid.ha-replication exchange.
Use ACL to restrict access to qpid.ha-replication to the replication user.

- solves the security problem
- separates HA from management, we don't have to bend management to suit HA.
- use store encoding, keep HA in sync with store which is a more logical match.

2. For the addressing issue: replicate changes of failover-url. The link on the primary will
connect and update its own failover-urls. Replicate those URLs to the other brokers. 
> New HA federation links do not fail over
> ----------------------------------------
>                 Key: QPID-4100
>                 URL: https://issues.apache.org/jira/browse/QPID-4100
>             Project: Qpid
>          Issue Type: New Feature
>          Components: C++ Clustering
>    Affects Versions: 0.17
>            Reporter: Alan Conway
>            Assignee: Alan Conway
> Given two new-HA clusters and a federation link between the primaries of each cluster:

> - if the source broker is killed, the route _does_ fail over to the new primary
> - if the destination broker is killed the route _is not_ re-created on the new primary
> Federation link and bridge information should be replicated to all cluster members so
when a primary dies the backup that takes over can re-create links and bridges.

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