Used the image from ONAP nexus - nexus3.onap.org:10001/onap/org.onap.dcaegen2.collectors.datafile.datafile-app-server:latest and noticed the deployment of DFC failed.

ubuntu@k8sc1-rancher:~/oom/kubernetes/dcaegen2/charts/dcae-bootstrap/resources/inputs$ kubectl get pods -n onap | grep datafile
dep-dcae-datafile-collector-f7db9dfd8-lpd7p           0/2       CrashLoopBackOff   8          4m
{{}}

ubuntu@k8sc1-rancher:~/oom/kubernetes/dcaegen2/charts/dcae-bootstrap/resources/inputs$ kubectl logs -f -n onap dep-dcae-datafile-collector-f7db9dfd8-lpd7p -c dcae-datafile-collector
failed to open log file "/var/log/pods/7eb74f57-c345-11e8-a0d4-02670720b592/dcae-datafile-collector_5.log": open /var/log/pods/7eb74f57-c345-11e8-a0d4-02670720b592/dcae-datafile-collector_5.log: no such file or directory