Question About Virtual IP Support in WildFly HA

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Omar El Kabous

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Jul 31, 2026, 9:58:18 AM (11 days ago) Jul 31
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Hello WildFly Team,

I have a question regarding WildFly High Availability and Virtual IP (VIP) support.

Suppose I have two WildFly instances configured with standalone-full-ha.xml and clustered using JGroups/Infinispan:

My understanding from the WildFly documentation is that JGroups provides cluster communication and Infinispan provides session replication, but that a separate load balancer (such as Apache HTTPD with mod_cluster, HAProxy, NGINX, F5, etc.) is required to expose a single Virtual IP (VIP) or endpoint to clients.

Could you please confirm whether the following statement is correct?

Can two standalone WildFly instances, configured with standalone-full-ha.xml and JGroups clustering only (without any external load balancer, proxy, Windows NLB, Keepalived, or similar infrastructure), expose a single Virtual IP (VIP) that clients can connect to?

If the answer is no, could you please clarify which component is responsible for providing the VIP in a standard WildFly HA architecture?

Thank you for your time and clarification.

Kind regards,
Omar


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