[jboss-jira] [JBoss JIRA] (WFLY-6841) Add backup service support for singleton services

[Paul Ferraro (JIRA)]

Paul Ferraro created WFLY-6841:
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             Summary: Add backup service support for singleton services
                 Key: WFLY-6841
                 URL: https://issues.jboss.org/browse/WFLY-6841
             Project: WildFly
          Issue Type: Feature Request
          Components: Clustering
    Affects Versions: 10.0.0.Final
            Reporter: Paul Ferraro
            Assignee: Paul Ferraro
             Fix For: 11.0.0.Alpha1


Currently, singleton services are started on the primary node only - no service is started on the backup node.  We can generalize this use case by building a singleton service using 2 services: one to be started on the primary node, and the other to be installed on backup nodes.  When a node is elected as the primary provider, we stop the backup service, and start the primary service.  Conversely, when a primary node loses a re-election, it stops its primary service and starts its backup service.



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