[jboss-jira] [JBoss JIRA] (WFLY-10269) RemoteStore should use unresolved hostnames to accommodate dynamic environments

[Marek Posolda (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-10269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13565213#comment-13565213 ] 

Marek Posolda commented on WFLY-10269:
--------------------------------------

It's likely a bit hard to test for me as I am using productized RHSSO with version "7.1.0.GA-redhat-11" version of artifact "org.jboss.eap:wildfly-clustering-infinispan" . If you send send me the Patched JAR with 7.1.0.GA-redhat-11 + just this change included, it will be helpful. Otherwise probably not as I likely can't replace the productized JAR with  Wildfly master SNAPSHOT JAR (there might be more changes included, API incompatibilities etc)

> RemoteStore should use unresolved hostnames to accommodate dynamic environments
> -------------------------------------------------------------------------------
>
>                 Key: WFLY-10269
>                 URL: https://issues.jboss.org/browse/WFLY-10269
>             Project: WildFly
>          Issue Type: Enhancement
>          Components: Clustering
>    Affects Versions: 11.0.0.Final
>            Reporter: Marek Posolda
>            Assignee: Paul Ferraro
>
> Use-case: We have openshift environment with RHSSO server connected to JDG server through HotRod protocol. RHSSO is connected to JDG through the RemoteStore . Configuration on RHSSO side is like this: 
> Socket binding in standalone-ha.xml
> {code}
> <outbound-socket-binding name="remote-cache">
>     <remote-destination host="jdg-app-hotrod.infinispan.svc" port="11222"/>
> </outbound-socket-binding>
> {code}
> And remote-store something like this:
> {code}
> <replicated-cache name="work" mode="SYNC">
>     <remote-store cache="work" remote-servers="remote-cache" passivation="false" fetch-state="false" purge="false" preload="false" shared="true">        
>     </remote-store>
> </replicated-cache>
> {code}
> Let's assume that JDG needs to be restarted. This usually causes that service "jdg-app-hotrod.infinispan.svc" will be available under different IP address. For example previous IP of "jdg-app-hotrod.infinispan.svc" is "172.30.247.78" . After restart, it is changed to "172.30.28.27" .
> The issue is, that HotRod client won't be able to see this change and will still try to connect to old address.
> Why?: The org.jboss.as.clustering.infinispan.subsystem.RemoteStoreBuilder method "accept" always pass resolved address to infinispan: https://github.com/wildfly/wildfly/blob/master/clustering/infinispan/extension/src/main/java/org/jboss/as/clustering/infinispan/subsystem/RemoteStoreBuilder.java#L95 . So infinispan will receive just static IP address.
> If there is an option for RemoteStoreBuilder to pass the "unresolved" hostname, it will help. Infinispan itself has support for "unresolved" dynamic hostnames thanks to the JIRA: ISPN-7955 , so it is already able to dynamically adapt to changed IP.



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