diff --git a/docs/how-to/how-to-setup-swap-devices-in-guest-kernel.md b/docs/how-to/how-to-setup-swap-devices-in-guest-kernel.md
index 1ec90d760d..70bbbf6b3a 100644
--- a/docs/how-to/how-to-setup-swap-devices-in-guest-kernel.md
+++ b/docs/how-to/how-to-setup-swap-devices-in-guest-kernel.md
@@ -27,6 +27,8 @@ $ image="quay.io/prometheus/busybox:latest"
 $ cat << EOF > "${pod_yaml}"
 metadata:
   name: busybox-sandbox1
+  uid: $(uuidgen)
+  namespace: default
 EOF
 $ cat << EOF > "${container_yaml}"
 metadata:
diff --git a/docs/how-to/how-to-use-virtio-fs-nydus-with-kata.md b/docs/how-to/how-to-use-virtio-fs-nydus-with-kata.md
index 9b04d49cf2..0ea8bf73f7 100644
--- a/docs/how-to/how-to-use-virtio-fs-nydus-with-kata.md
+++ b/docs/how-to/how-to-use-virtio-fs-nydus-with-kata.md
@@ -32,6 +32,7 @@ The `nydus-sandbox.yaml` looks like below:
 metadata:
   attempt: 1
   name: nydus-sandbox
+  uid: nydus-uid
   namespace: default
 log_directory: /tmp
 linux:
diff --git a/docs/how-to/how-to-use-virtio-mem-with-kata.md b/docs/how-to/how-to-use-virtio-mem-with-kata.md
index 0c838927a9..40465bbe53 100644
--- a/docs/how-to/how-to-use-virtio-mem-with-kata.md
+++ b/docs/how-to/how-to-use-virtio-mem-with-kata.md
@@ -42,6 +42,8 @@ $ image="quay.io/prometheus/busybox:latest"
 $ cat << EOF > "${pod_yaml}"
 metadata:
   name: busybox-sandbox1
+  uid: $(uuidgen)
+  namespace: default
 EOF
 $ cat << EOF > "${container_yaml}"
 metadata: