Add information about ssh to remote cluster

k8s/AGENTS.md

@@ -32,6 +32,32 @@ This directory contains the Kubernetes manifests and Helm charts for a single-no
 *   `*.secret.values`
 *   `*.secret.sh`
 
+## Remote Access
+It is possible to execute commands on the remote Linux node for information retrieval or troubleshooting.
+
+*   **Host**: `haumdaucher.de`
+*   **User**: `moritz` (local user)
+*   **Privileges**: Use `sudo` to gain root privileges.
+
+> [!CAUTION]
+> **SSH Identity Required**: The agent cannot enter an SSH passphrase.
+> If SSH commands fail with authentication errors, request the user to run `ssh-add` locally to load their identity.
+
+### Command Execution
+You can execute commands remotely via SSH. This is useful for checking node-level resources (memory, disk, etc.) that `kubectl` might not expose directly.
+
+**Example: Check Memory Usage**
+```bash
+ssh moritz@haumdaucher.de "free -h"
+```
+
+**Example: Check Disk Usage (with sudo)**
+```bash
+ssh -t moritz@haumdaucher.de "sudo df -h"
+```
+*Note: The `-t` flag forces pseudo-terminal allocation, which is often required for `sudo` prompts.*
+
+
 ## Deployment Instructions
 **Always consult `README.md` first.** Deployments vary between Helm charts and raw manifests.