Wildfly 16 sudden restart| WFLYJCA0019: Stopped Driver service with driver-name | MODCLUSTER000021

Question

Wildfly 16 in cluster sudden restarts printing stopped driver service name

WFLYJCA0019: Stopped Driver service with driver-name = selskapsdata-1.5-SNAPSHOT.war_oracle.jdbc.OracleDriver_19_3
MODCLUSTER000021: All pending requests drained from default-host:/wildfly-services in 0.0 seconds
WFLYJCA0010: Unbound data source [java:/datasources/eiMastDS]
Stopped Deployment
etc

There is no killing from OOM (No Signal from OS to kill wildfly. There is no out of memory error. Node 1 just restart like this and then node2 and node3 get singleton service message and tries to redeploy.

Hostcontrller mentions

WFLYHC0027: Unregistering server clusternode01

This happen every night at 00:05. I could not see what is actually going on. Can anyone sugggest?

Answer 1

We fixed it by removing Load Metrics.

Some XYZ changed settings to ANY.

So when process or memory extensive application runs; It tried to redeploy it to other nodes.

Then it shows out of memory, classloader exceptions or sudden stop