diff --git a/README.md b/README.md
index 1383738..acf8351 100644
--- a/README.md
+++ b/README.md
@@ -95,6 +95,8 @@ fs.inotify.max_user_instances = 8192
 fs.inotify.max_user_watches = 524288
 ```
 
+Add `rshared` mount option to root filesystem for node-exporter to work correctly.
+
 ### Installing: k3s
 
 Via [k3sup](https://github.com/alexellis/k3sup):