diff --git a/cluster/saltbase/salt/fluentd-es/fluentd-es.yaml b/cluster/saltbase/salt/fluentd-es/fluentd-es.yaml
index caf90526c26..c2105b29476 100644
--- a/cluster/saltbase/salt/fluentd-es/fluentd-es.yaml
+++ b/cluster/saltbase/salt/fluentd-es/fluentd-es.yaml
@@ -11,7 +11,7 @@ spec:
       limits:
         cpu: 100m
     args:
-    - -qq
+    - -q
     volumeMounts:
     - name: varlog
       mountPath: /var/log
diff --git a/cluster/saltbase/salt/fluentd-gcp/fluentd-gcp.yaml b/cluster/saltbase/salt/fluentd-gcp/fluentd-gcp.yaml
index 6eae4c8f699..a7749b75801 100644
--- a/cluster/saltbase/salt/fluentd-gcp/fluentd-gcp.yaml
+++ b/cluster/saltbase/salt/fluentd-gcp/fluentd-gcp.yaml
@@ -19,6 +19,7 @@ spec:
       mountPath: /varlog
     - name: containers
       mountPath: /var/lib/docker/containers
+      readOnly: true
   terminationGracePeriodSeconds: 30
   volumes:
   - name: varlog
diff --git a/docs/getting-started-guides/logging.md b/docs/getting-started-guides/logging.md
index de308b9e84c..82ab815eec3 100644
--- a/docs/getting-started-guides/logging.md
+++ b/docs/getting-started-guides/logging.md
@@ -182,6 +182,7 @@ spec:
       mountPath: /varlog
     - name: containers
       mountPath: /var/lib/docker/containers
+      readOnly: true
   terminationGracePeriodSeconds: 30
   volumes:
   - name: varlog