Merge pull request #47360 from icereval/feature/fluentd-node-problem-detector

Automatic merge from submit-queue

GCP Fluentd Logging of node-problem-detector

**What this PR does / why we need it**:

This PR adds `node-problem-detector` logging to the gcp fluentd configmap.

Adding this logging GCE can now capture events and alert on process `OOMKilling` conditions when applying memory limits to containers.

**Which issue this PR fixes**:

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

cluster/addons/fluentd-gcp/fluentd-gcp-configmap.yaml

@@ -278,6 +278,14 @@ data:
       read_from_head true
       tag kubelet
     </source>
+
+    <source>
+      type systemd
+      filters [{ "_SYSTEMD_UNIT": "node-problem-detector.service" }]
+      pos_file /var/log/gcp-journald-node-problem-detector.pos
+      read_from_head true
+      tag node-problem-detector
+    </source>
   monitoring.conf: |-
     # Prometheus monitoring
     <source>