In case you are in a restricted environment which not allow the role to view ConfigMap to your service account, you need to mount the external config directory under the current working directory, for instance <working-dir>/config/application.properties The working directory for: jvm redhat-openjdk-18/openjdk18-openshift image is /deployments

native ubi-quarkus-native-s2i:19.3.1-java11 image is /home/quarkus volumeMounts sample # ... volumes: - name: config configMap: name: client # ... volumeMounts: - name: config mountPath: /deployments