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233 lines
7.4 KiB
Markdown
233 lines
7.4 KiB
Markdown
---
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summary: "Host OpenClaw on a Raspberry Pi for always-on self-hosting"
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read_when:
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- Setting up OpenClaw on a Raspberry Pi
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- Running OpenClaw on ARM devices
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- Building a cheap always-on personal AI
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title: "Raspberry Pi"
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---
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Run a persistent, always-on OpenClaw Gateway on a Raspberry Pi. Since the Pi is just the gateway (models run in the cloud via API), even a modest Pi handles the workload well — typical hardware cost is **$35–80 one-time**, no monthly fees.
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## Hardware compatibility
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| Pi model | RAM | Works? | Notes |
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| ----------- | ------ | ------ | ----------------------------------- |
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| Pi 5 | 4/8 GB | Best | Fastest, recommended. |
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| Pi 4 | 4 GB | Good | Sweet spot for most users. |
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| Pi 4 | 2 GB | OK | Add swap. |
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| Pi 4 | 1 GB | Tight | Possible with swap, minimal config. |
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| Pi 3B+ | 1 GB | Slow | Works but sluggish. |
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| Pi Zero 2 W | 512 MB | No | Not recommended. |
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**Minimum:** 1 GB RAM, 1 core, 500 MB free disk, 64-bit OS.
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**Recommended:** 2 GB+ RAM, 16 GB+ SD card (or USB SSD), Ethernet.
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## Prerequisites
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- Raspberry Pi 4 or 5 with 2 GB+ RAM (4 GB recommended)
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- MicroSD card (16 GB+) or USB SSD (better performance)
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- Official Pi power supply
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- Network connection (Ethernet or WiFi)
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- 64-bit Raspberry Pi OS (required -- do not use 32-bit)
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- About 30 minutes
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## Setup
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<Steps>
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<Step title="Flash the OS">
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Use **Raspberry Pi OS Lite (64-bit)** -- no desktop needed for a headless server.
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1. Download [Raspberry Pi Imager](https://www.raspberrypi.com/software/).
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2. Choose OS: **Raspberry Pi OS Lite (64-bit)**.
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3. In the settings dialog, pre-configure:
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- Hostname: `gateway-host`
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- Enable SSH
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- Set username and password
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- Configure WiFi (if not using Ethernet)
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4. Flash to your SD card or USB drive, insert it, and boot the Pi.
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</Step>
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<Step title="Connect via SSH">
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```bash
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ssh user@gateway-host
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```
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</Step>
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<Step title="Update the system">
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```bash
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sudo apt update && sudo apt upgrade -y
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sudo apt install -y git curl build-essential
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# Set timezone (important for cron and reminders)
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sudo timedatectl set-timezone America/Chicago
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```
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</Step>
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<Step title="Install Node.js 24">
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```bash
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curl -fsSL https://deb.nodesource.com/setup_24.x | sudo -E bash -
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sudo apt install -y nodejs
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node --version
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```
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</Step>
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<Step title="Add swap (important for 2 GB or less)">
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```bash
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sudo fallocate -l 2G /swapfile
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sudo chmod 600 /swapfile
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sudo mkswap /swapfile
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sudo swapon /swapfile
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echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
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# Reduce swappiness for low-RAM devices
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echo 'vm.swappiness=10' | sudo tee -a /etc/sysctl.conf
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sudo sysctl -p
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```
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</Step>
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<Step title="Install OpenClaw">
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```bash
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curl -fsSL https://openclaw.ai/install.sh | bash
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```
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</Step>
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<Step title="Run onboarding">
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```bash
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openclaw onboard --install-daemon
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```
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Follow the wizard. API keys are recommended over OAuth for headless devices. Telegram is the easiest channel to start with.
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</Step>
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<Step title="Verify">
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```bash
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openclaw status
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systemctl --user status openclaw-gateway.service
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journalctl --user -u openclaw-gateway.service -f
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```
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</Step>
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<Step title="Access the Control UI">
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On your computer, get a dashboard URL from the Pi:
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```bash
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ssh user@gateway-host 'openclaw dashboard --no-open'
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```
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Then create an SSH tunnel in another terminal:
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```bash
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ssh -N -L 18789:127.0.0.1:18789 user@gateway-host
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```
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Open the printed URL in your local browser. For always-on remote access, see [Tailscale integration](/gateway/tailscale).
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</Step>
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</Steps>
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## Performance tips
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**Use a USB SSD** -- SD cards are slow and wear out. A USB SSD dramatically improves performance. See the [Pi USB boot guide](https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#usb-mass-storage-boot).
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**Enable module compile cache** -- Speeds up repeated CLI invocations on lower-power Pi hosts:
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```bash
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grep -q 'NODE_COMPILE_CACHE=/var/tmp/openclaw-compile-cache' ~/.bashrc || cat >> ~/.bashrc <<'EOF' # pragma: allowlist secret
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export NODE_COMPILE_CACHE=/var/tmp/openclaw-compile-cache
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mkdir -p /var/tmp/openclaw-compile-cache
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export OPENCLAW_NO_RESPAWN=1
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EOF
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source ~/.bashrc
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```
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**Reduce memory usage** -- For headless setups, free GPU memory and disable unused services:
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```bash
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echo 'gpu_mem=16' | sudo tee -a /boot/config.txt
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sudo systemctl disable bluetooth
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```
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**systemd drop-in for stable restarts** -- If this Pi is mostly running OpenClaw, add a service drop-in:
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```bash
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systemctl --user edit openclaw-gateway.service
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```
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```ini
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[Service]
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Environment=OPENCLAW_NO_RESPAWN=1
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Environment=NODE_COMPILE_CACHE=/var/tmp/openclaw-compile-cache
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Restart=always
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RestartSec=2
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TimeoutStartSec=90
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```
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Then `systemctl --user daemon-reload && systemctl --user restart openclaw-gateway.service`. On a headless Pi, also enable lingering once so the user service survives logout: `sudo loginctl enable-linger "$(whoami)"`.
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## Recommended model setup
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Since the Pi only runs the gateway, use cloud-hosted API models:
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```json
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{
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"agents": {
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"defaults": {
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"model": {
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"primary": "anthropic/claude-sonnet-4-6",
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"fallbacks": ["openai/gpt-5.4-mini"]
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}
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}
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}
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}
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```
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Do not run local LLMs on a Pi — even small models are too slow to be useful. Let Claude or GPT do the model work.
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## ARM binary notes
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Most OpenClaw features work on ARM64 without changes (Node.js, Telegram, WhatsApp/Baileys, Chromium). The binaries that occasionally lack ARM builds are typically optional Go/Rust CLI tools shipped by skills. Verify a missing binary's release page for `linux-arm64` / `aarch64` artifacts before falling back to building from source.
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## Persistence and backups
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OpenClaw state lives under:
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- `~/.openclaw/` — `openclaw.json`, per-agent `auth-profiles.json`, channel/provider state, sessions.
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- `~/.openclaw/workspace/` — agent workspace (SOUL.md, memory, artifacts).
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These survive reboots. Take a portable snapshot with:
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```bash
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openclaw backup create
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```
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If you keep these on an SSD, both performance and longevity improve over the SD card.
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## Troubleshooting
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**Out of memory** -- Verify swap is active with `free -h`. Disable unused services (`sudo systemctl disable cups bluetooth avahi-daemon`). Use API-based models only.
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**Slow performance** -- Use a USB SSD instead of an SD card. Check for CPU throttling with `vcgencmd get_throttled` (should return `0x0`).
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**Service will not start** -- Check logs with `journalctl --user -u openclaw-gateway.service --no-pager -n 100` and run `openclaw doctor --non-interactive`. If this is a headless Pi, also verify lingering is enabled: `sudo loginctl enable-linger "$(whoami)"`.
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**ARM binary issues** -- If a skill fails with "exec format error", check whether the binary has an ARM64 build. Verify architecture with `uname -m` (should show `aarch64`).
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**WiFi drops** -- Disable WiFi power management: `sudo iwconfig wlan0 power off`.
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## Next steps
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- [Channels](/channels) -- connect Telegram, WhatsApp, Discord, and more
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- [Gateway configuration](/gateway/configuration) -- all config options
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- [Updating](/install/updating) -- keep OpenClaw up to date
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## Related
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- [Install overview](/install)
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- [Linux server](/vps)
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- [Platforms](/platforms)
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