docs: initial ssh username draft

docs/docs-content/architecture/ssh-usernames.md

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+---
+sidebar_label: "SSH Usernames"
+title: "SSH Usernames"
+description: "A list of the Secure Shell (SSH) usernames created for each provider type on Kubernetes nodes"
+icon: ""
+hide_table_of_contents: false
+sidebar_position: 60
+---
+
+This page lists the Secure Shell (SSH) user names created on Kubernetes nodes, which vary by provider and operating system.
+
+These user names are relevant when deploying [SSH key pairs](../clusters/cluster-management/ssh-keys.md) to your Kubernetes cluster through Palette.
+
+## Public Clouds
+
+### Infrastructure Provider
+
+| Provider | Operating System | SSH Username |
+| --- | --- | -- |
+| **AWS IaaS** | TBC | TBC |
+| **Azure IaaS** | TBC | TBC |
+| **GCP IaaS** | TBC | TBC |
+
+### Managed Kubernetes
+
+| Provider | Operating System | SSH Username |
+| --- | --- | -- |
+| **AWS EKS** | **Amazon EKS optimized Linux 1.0.0** |  `ec2-user` |
+| **Azure AKS** | **Linux 22.04** | `azureuser` |
+| **GCP GKE** | **Container-Optimized OS** | TBC |
+| **TKE** (Tencent) | TBC | TBC |
+
+## Data Center
+
+| Provider | Operating System | SSH Username |
+| --- | --- | -- |
+| MAAS | TBC | TBC |
+| Openstack | TBC | TBC |
+| VMware vSphere | TBC | `spectro` |
+
+## Edge
+
+| Provider | SSH Username |
+| --- | --- |
+| Edge Native | TBC | TBC |
+
+## Resources
+
+- [SSH key pairs](../clusters/cluster-management/ssh-keys.md)
+- [Deploy a Cluster (Public Cloud)](../clusters/public-cloud/deploy-k8s-cluster.md)
+- [Data Center Clusters](../clusters/data-center/data-center.md)
+- [Create Cluster Definition (Edge)](../clusters/edge/site-deployment/cluster-deployment.md)