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-rw-r--r--doc/user/project/clusters/index.md6
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@@ -254,6 +254,12 @@ install it manually.
## Installing applications
+NOTE: **Note:**
+Before starting the installation of applications please make sure that time is synchronized
+between your GitLab server and your Kubernetes cluster. Otherwise, installation could fail,
+and you may get errors like `Error: remote error: tls: bad certificate`
+in the stdout of pods created by GitLab in your Kubernetes cluster.
+
GitLab provides a one-click install for various applications which can
be added directly to your configured cluster. Those applications are
needed for [Review Apps](../../../ci/review_apps/index.md) and