Don't let fluentd pipe its own logs directly back into itself.

cluster/addons/fluentd-elasticsearch/fluentd-es-image/td-agent.conf

@@ -100,6 +100,11 @@
 # problem yet to be solved as secrets are not usable in static pods which the fluentd
 # pod must be until a per-node controller is available in Kubernetes.
 
+# Do not directly collect fluentd's own logs to avoid infinite loops.
+<match fluent.**>
+  type null
+</match>
+
 <source>
   type tail
   path /var/log/containers/*.log

cluster/addons/fluentd-gcp/fluentd-gcp-image/google-fluentd.conf

@@ -42,6 +42,11 @@
 # the name of the Kubernetes container regardless of how many times the
 # Kubernetes pod has been restarted (resulting in a several Docker container IDs).
 
+# Do not directly collect fluentd's own logs to avoid infinite loops.
+<match fluent.**>
+  type null
+</match>
+
 <source>
   type tail
   format json