Headscale Complete Guide 2026: Self-Host Your Own Tailscale Server (Docker Compose Setup)

Why Self-Host a Mesh VPN?

Modern infrastructure is distributed. You have servers in the cloud, a homelab in your garage, a laptop at a coffee shop, and maybe a Raspberry Pi monitoring your garden. Connecting all of these securely without opening firewall ports or managing WireGuard by hand is where mesh VPNs shine.

Tailscale made this easy — but it’s a proprietary service with limits on free tiers (max 3 users, 100 devices) and your coordination traffic routes through their servers. For homelab users, small teams, and privacy-conscious operators, that’s a dealbreaker.

Headscale is the fully open-source, self-hosted drop-in replacement for Tailscale’s coordination server. It implements the same WireGuard-based mesh protocol, works with official Tailscale clients, and gives you complete control over your network.

What You Get with Headscale

• Unlimited users and nodes — no artificial caps
• Full data sovereignty — coordination never leaves your server
• Tailscale client compatibility — use official tailscale CLI on every device
• ACLs and tags — fine-grained access control between nodes
• Exit nodes — route all traffic through a trusted gateway
• DERP relay support — connectivity even behind strict NAT
• Zero cost — runs on a $5/month VPS or a Raspberry Pi

Quick Comparison: Headscale vs Tailscale vs Netmaker

Before diving into deployment, here’s how Headscale stacks up against the main alternatives:

Headscale Architecture Overview

Headscale works as a central coordination server. Here’s the flow:

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┌─────────────┐     ┌──────────────────┐     ┌─────────────┐
│  Laptop     │────▶│   Headscale      │◀────│  Homelab    │
│ (tailscale) │     │   Server         │     │ (tailscale) │
└─────────────┘     └──────────────────┘     └─────────────┘
                           │
                    ┌──────┴──────┐
                    │  WireGuard  │
                    │  P2P Tunnel │
                    └─────────────┘

1. Each node runs the official tailscale client
2. Nodes register with your Headscale server
3. Headscale distributes WireGuard keys and routing info
4. Nodes establish direct P2P WireGuard tunnels to each other
5. If direct connection fails, traffic relays throughdockerP server

Docker Compose Deployment

Here’s a production-ready Docker Compose setup for Headscale with persistent storage and a custom DERP relay.

Prerequisites

• A Linux server with Docker and Docker Compose installed
• A domain name pointing to your server (e.g., headscale.example.com)
• TLS certificates (Let’s Encrypt via Traefik, Caddy, or manual)
• At least 64 MB RAM and 1 CPU core

Project Structure

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/opt/headscale/
├── docker-compose.yml
├── config/
│   └── config.yaml
├── db/              # SQLite database (persistent)
└── certs/           # TLS certificates

Step 1: Create the Directory Structure

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mkdir -p /opt/headscale/{config,db,certs}
cd /opt/headscale

Step 2: Headscale Configuration

Create config/config.yaml:

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---
# Listen addresses
listen_addr: 0.0.0.0:8080
metrics_listen_addr: 0.0.0.0:9090

# gRPC for internal communication
grpc_listen_addr: 0.0.0.0:50443

# Persistent storage
db_type: sqlite3
db_path: /var/lib/headscale/db.sqlite

# TLS — terminate at reverse proxy or mount certs here
# tls_letsencrypt_listen: ":80"
# tls_letsencrypt_hostname: "headscale.example.com"

# DERP configuration
derp:
  server:
    enabled: true
    region_id: 999
    region_code: "self"
    region_name: "Self-Hosted DERP"
    stun_listen_addr: "0.0.0.0:3478"

# DNS configuration
dns_config:
  override_local_dns: true
  nameservers:
    - 1.1.1.1
    - 8.8.8.8
  domains:
    - example.com
  magic_dns: true
  base_domain: example.com

# Network settings
prefixes:
  v6: fd7a:115c:a1e0::/48
  v4: 100.64.0.0/10

# Node expiration (set to 0 for never expire)
default_expiry: 180d

# Log settings
log:
  level: info
  format: text

# ACL policy path (mounted as volume)
policy:
  path: /etc/headscale/acl.yaml

# OIDC authentication (optional — uncomment for SSO)
# oidc:
#   only_start_if_oidc_is_available: true
#   issuer: "https://auth.example.com/realms/headscale"
#   client_id: "headscale"
#   client_secret: "your-client-secret"
#   extra_params:
#     prompt: consent

Step 3: ACL Policy

Create config/acl.yaml — this controls which nodes can talk to each other:

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---
# Declare static groups of users
groups:
  group:admins:
    - admin@example.com
  group:developers:
    - dev1@example.com
    - dev2@example.com
  group:servers:
    - homelab-server
    - vps-nginx
    - monitoring

# Define access rules
acls:
  # Admins can access everything
  - action: accept
    src: [group:admins]
    dst:
      - "*:*"

  # Servers can talk to each other on all ports
  - action: accept
    src: [group:servers]
    dst:
      - "group:servers:*"

  # Developers can access servers on common ports
  - action: accept
    src: [group:developers]
    dst:
      - "group:servers:22,80,443,3000,8080,9090"

  # Developers can SSH into each other
  - action: accept
    src: [group:developers]
    dst:
      - "group:developers:22"

# Auto-assign tags to nodes by user
auto_approvers:
  routes:
    192.168.1.0/24:
      - admin@example.com
    10.10.0.0/16:
      - admin@example.com

# DNS settings per tag
# (MagicDNS handles this automatically)

Step 4: Docker Compose

Create docker-compose.yml:

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---
services:
  headscale:
    image: headscale/headscale:0.24.1
    container_name: headscale
    restart: unless-stopped
    volumes:
      - ./config:/etc/headscale:ro
      - ./db:/var/lib/headscale
    ports:
      - "8080:808[prometheus](https://prometheus.io/)in API
      - "9090:9090"    # Metrics (Prometheus)
      - "3478:3478/udp" # STUN for DERP
    environment:
      - TZ=UTC
    command: ["serve"]
    networks:
      - headscale-net

  # Optional: Headscale Admin Web UI
  headscale-admin:
    image: ifargle/headscale-admin:latest
    container_name: headscale-admin
    restart: unless-stopped
    environment:
      - HEADSCALE_URL=http://headscale:8080
    ports:
      - "3000:80"
    depends_on:
      - headscale
    networks:
      - headscale-net

networks:
  headscale-net:
    driver: bridge

Step 5: Launch Headscale

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cd /opt/headscale
docker compose up -d

# Check it's running
docker compose ps

# View logs
docker compose logs -f headscale

Connecting Nodes

Create a Pre-Auth Key

Pre-auth keys let you join nodes without manually approving each one:

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# Generate a reusable auth key (valid for 90 days)
docker exec headscale headscale preauthkeys create \
  --expiration 2160h \
  --reusable \
  --ephemeral

# Output: a1b2c3d4e5f6...

Join a Linux Node

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# Install Tailscale (official client)
curl -fsSL https://tailscale.com/install.sh | sh

# Connect to your Headscale server
tailscale up --login-server https://headscale.example.com

# OR using a pre-auth key (no browser needed)
tailscale up \
  --login-server https://headscale.example.com \
  --authkey a1b2c3d4e5f6...

Join with Subnet Routes (Homelab Gateway)

To expose your home LAN through the mesh:

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tailscale up \
  --login-server https://headscale.example.com \
  --advertise-routes=192.168.1.0/24 \
  --authkey a1b2c3d4e5f6...

Then approve the route on the server:

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docker exec headscale headscale routes enable --all

Join as an Exit Node

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tailscale up \
  --login-server https://headscale.example.com \
  --advertise-exit-node \
  --authkey a1b2c3d4e5f6...

Approve on the server:

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docker exec headscale headscale routes enable --all

Now other nodes can route all traffic through it:

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tailscale up --exit-node=100.64.0.1 --exit-node-allow-lan-access

Reverse Proxy Setup (Caddy)

Headscale needs TLS for the Tailscale clients to connect securely. Here’s a Caddy config that handles automatic Let’s Encrypt:

Docker Compose with Caddy

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---
services:
  headscale:
    image: headscale/headscale:0.24.1
    container_name: headscale
    restart: unless-stopped
    volumes:
      - ./config:/etc/headscale:ro
      - ./db:/var/lib/headscale
    ports:
      - "9090:9090"
      - "3478:3478/udp"
    command: ["serve"]
    networks:
      - headscale-net

  caddy:
    image: caddy:2
    container_name: headscale-caddy
    restart: unless-stopped
    volumes:
      - ./Caddyfile:/etc/caddy/Caddyfile:ro
      - caddy_data:/data
      - caddy_config:/config
    ports:
      - "80:80"
      - "443:443"
      - "443:443/udp"
    depends_on:
      - headscale
    networks:
      - headscale-net

volumes:
  caddy_data:
  caddy_config:

networks:
  headscale-net:
    driver: bridge

Caddyfile

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headscale.example.com {
    reverse_proxy headscale:8080
}

# Optional: Admin UI
admin.example.com {
    reverse_proxy headscale-admin:80
}

Performance & Resource Usage

Headscale Server Requirements

Comparison with Alternatives

Key insight: When nodes can establish direct P2P connections (most cases), all three solutions deliver identical performance — raw WireGuard throughput with near-zero overhead. The difference is only in the coordination layer, where Headscale is the lightest option you can self-host.

Real-World Benchmarks

On a $5 Hetzner VPS (2 vCPU, 2 GB RAM) running Headscale with 50 connected nodes:

• CPU usage: 0.3% average
• RAM usage: 42 MB
• Network: ~50 Kbps coordination traffic
• Node registration time: <200ms
• Route propagation: <1 second

OIDC / Single Sign-On Setup (Optional)

For production use, OIDC authentication is recommended over pre-auth keys:

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# Add to config.yaml
oidc:
  only_start_if_oidc_is_available: true
  issuer: "https://auth.example.com/realms/headscale"
  client_id: "headscale"
  client_secret: "your-secret"
  strip_email_domain: true

This works with Keycloak, Authentik, Authelia, or any OIDC provider. Users authenticate via their browser when running tailscale up.

Monitoring Headscale

Headscale exposes Prometheus metrics on port 9090:

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# Add to your monitoring stack
scrape_configs:
  - job_name: headscale
    static_configs:
      - targets: ["headscale:9090"]

Key metrics:

• headscale_node_count — total registered nodes
• headscale_active_node_count — currently connected
• headscale_route_count — number of routes
• headscale_api_request_duration — API latency

Frequently Asked Questions

1. Can Headscale use the official Tailscale client?

Yes, completely. Headscale implements the same coordination protocol as Tailscale. You install the official tailscale binary from tailscale.com and point it to your Headscale server using --login-server. All official Tailscale clients work on Linux, macOS, Windows, iOS, Android, and FreeBSD.

2. What happens if my Headscale server goes down?

Existing WireGuard tunnels between nodes continue to work. Nodes already connected to each other maintain their P2P connections. However, new node registrations, key rotations, and route changes won’t work until the server is back. For high availability, you can run multiple Headscale instances behind a load balancer with a shared database (PostgreSQL).

3. Do I need to run my own DERP server?

Not necessarily. Headscale includes a built-in DERP server (enabled by default in the config above). If your nodes are all on the public internet with open ports, they’ll connect P2P and never use DERP. However, if some nodes are behind strict NAT or firewalls (corporate networks, mobile carriers), the DERP relay ensures connectivity. You can also configure Headscale to use Tailscale’s public DERP servers as a fallback.

4. How does Headscale compare to WireGuard directly?

WireGuard is the underlying VPN protocol — it requires manual key exchange, peer configuration, and has no concept of NAT traversal or dynamic routing. Headscale adds the coordination layer on top of WireGuard: automatic key management, NAT hole punching, MagicDNS, subnet routing, ACLs, and the ability for nodes to discover and connect to each other without any manual configuration. Think of Headscale as “WireGuard with a brain.”

5. Can I migrate from Tailscale to Headscale?

You cannot directly transfer your Tailscale network, but migration is straightforward:

1. Install Headscale on your server
2. Remove Tailscale from each node: tailscale logout
3. Re-register each node pointing to your Headscale server
4. Reconfigure ACLs and routes in Headscale’s format For small networks (<20 nodes), this takes about 30 minutes. The IPs will change since Headscale manages its own IP space.

6. Does Headscale support PostgreSQL?

Yes. Headscale supports both SQLite (default, recommended for most users) and PostgreSQL (recommended for high-availability setups with multiple Headscale instances). To use PostgreSQL:

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db_type: postgres
db_host: postgres.example.com
db_port: 5432
db_name: headscale
db_user: headscale
db_pass: your-password

7. Is Headscale production-ready?

Headscale reached a stable release with v0.23+ and is used in production by thousands of organizations. The project has active maintainers, regular releases, and is supported by the Nordic NSO (National Cyber Security Centre of Norway). However, it does not have a commercial support SLA like Tailscale. For critical infrastructure, consider running redundant Headscale instances with PostgreSQL and monitoring.

8. What’s the difference between Headscale and Netmaker?

Headscale implements Tailscale’s protocol and uses official Tailscale clients, giving you a polished, well-tested client experience across all platforms. Netmaker uses its own custom netclient and provides a built-in web UI out of the box. Headscale is simpler and more lightweight; Netmaker offers more built-in management features. For most homelab and small-team use cases, Headscale is the easier path because you leverage the official Tailscale ecosystem.

Conclusion: Who Should Use Headscale?

Headscale is the right choice if you:

• Want unlimited nodes without Tailscale’s 100-device free tier limit
• Need full control over your coordination server and data
• Run a homelab, small business, or team infrastructure
• Already use Tailscale clients and want to self-host the server
• Need fine-grained ACL control over node-to-node access

Stick with managed Tailscale if you:

• Have fewer than 100 devices and don’t mind the limits
• Don’t want to maintain any infrastructure
• Need commercial support and an SLA
• Want the built-in web admin dashboard without setup

Consider Netmaker if you:

• Need a built-in web UI from day one
• Want more advanced network topology management
• Prefer not to use Tailscale’s proprietary client

For most self-hosting enthusiasts and homelab operators in 2026, Headscale hits the sweet spot: zero licensing cost, official client compatibility, and the simplicity of a single binary behind Docker. Deploy it in under 10 minutes and never worry about device limits again.