diff --git a/docs/_sidebar.md b/docs/_sidebar.md
index d30ec2a37..b4034baef 100644
--- a/docs/_sidebar.md
+++ b/docs/_sidebar.md
@@ -89,6 +89,19 @@
   * [Port-requirements](/docs/operations/port-requirements.md)
   * [Recover-control-plane](/docs/operations/recover-control-plane.md)
   * [Upgrades](/docs/operations/upgrades.md)
+  * [Cgroups](/docs/operations/cgroups.md)
+  * [Encrypting-secret-data-at-rest](/docs/operations/encrypting-secret-data-at-rest.md)
+  * [Etcd](/docs/operations/etcd.md)
+  * [Ha-mode](/docs/operations/ha-mode.md)
+  * [Hardening](/docs/operations/hardening.md)
+  * [Integration](/docs/operations/integration.md)
+  * [Large-deployments](/docs/operations/large-deployments.md)
+  * [Mirror](/docs/operations/mirror.md)
+  * [Nodes](/docs/operations/nodes.md)
+  * [Offline-environment](/docs/operations/offline-environment.md)
+  * [Port-requirements](/docs/operations/port-requirements.md)
+  * [Recover-control-plane](/docs/operations/recover-control-plane.md)
+  * [Upgrades](/docs/operations/upgrades.md)
 * Roadmap
   * [Roadmap](/docs/roadmap/roadmap.md)
 * Upgrades
diff --git a/docs/operations/upgrades.md b/docs/operations/upgrades.md
index ff768ebdc..1be760897 100644
--- a/docs/operations/upgrades.md
+++ b/docs/operations/upgrades.md
@@ -425,7 +425,7 @@ Please note that **migrating container engines is not officially supported by Ku
 
 As of Kubespray 2.18.0, containerd is already the default container engine. If you have the chance, it is advisable and safer to reset and redeploy the entire cluster with a new container engine.
 
-* [Migrating from Docker to Containerd](upgrades/migrate_docker2containerd.md)
+* [Migrating from Docker to Containerd](/docs/upgrades/migrate_docker2containerd.md)
 
 ## System upgrade