fix(proxmox): updates & power consumption

Virtualization/ProxMox/proxmox-8-apt-updates.md

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+# Configure apt repository updates on Proxmox 8.x.x Community Edition
+
+## Add the Proxmox repositoy to /etc/apt/sources.list.d/pve-community.list
+
+```bash
+echo "deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription" > /etc/apt/sources.list.d/pve-community.list
+```
+
+## Comment out the enterprise repository at /etc/apt/sources.list.d/pve-enterprise.list
+
+```bash
+sed -i 's/^deb/#deb/' /etc/apt/sources.list.d/pve-enterprise.list
+```
+
+## Change the ceph repository at /etc/apt/sources.list.d/ceph.list
+
+```bash
+sed -i 's/^deb/#deb/' /etc/apt/sources.list.d/ceph.list
+echo "deb http://download.proxmox.com/debian/ceph-pacific bookworm main" >> /etc/apt/sources.list.d/ceph.list
+```

Virtualization/ProxMox/proxmox-cpu-consumption.md

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+# Reduce CPU consumption on Proxmox
+
+1. Login to the Proxmox host via the web interface by pressing on Shell
+2. Install the package `cpufrequtils` via `apt install cpufrequtils`
+    ```bash
+    apt update && apt install cpufrequtils
+    ```
+3. See available governors via `cpufreq-info -g`
+    ```bash
+    cpufreq-info -g
+    ```
+4. Set the governor to `powersave` via `cpufreq-set -g powersave`
+    ```bash
+    cpufreq-set -g powersave
+    ```