docs-v2/self-host/advanced/config-file.mdx

---
title: "Configuration File"
description: "Configure Pangolin using the config.yml file with detailed settings for all components"
---

The `config.yml` file controls all aspects of your Pangolin deployment, including server settings, domain configuration, email setup, and security options. This file is mounted at `config/config.yml` in your Docker container.

## Setting up your `config.yml`

To get started, create a basic configuration file with the essential settings:

Minimal Pangolin configuration:

```yaml title="config.yml"
app:
  dashboard_url: "https://pangolin.example.com"

domains:
  domain1:
    base_domain: "pangolin.example.com"
    cert_resolver: "letsencrypt"

server:
  secret: "your-strong-secret"

gerbil:
  base_endpoint: "pangolin.example.com"

flags:
  require_email_verification: false
  disable_signup_without_invite: true
  disable_user_create_org: true
```
<Warning>

Generate a strong secret for `server.secret`. Use at least 32 characters with a mix of letters, numbers, and special characters.
</Warning>

## Reference

This section contains the complete reference for all configuration options in `config.yml`.

### Application Settings

<ResponseField name="app" type="object" required>
  Core application configuration including dashboard URL, logging, and general settings.

  <Expandable title="App">
    <ResponseField name="dashboard_url" type="string" required>
      The URL where your Pangolin dashboard is hosted.

      **Examples**: `https://example.com`, `https://pangolin.example.com`

      This URL is used for generating links, redirects, and authentication flows. You can run Pangolin on a subdomain or root domain.
    </ResponseField>

    <ResponseField name="log_level" type="string">
      The logging level for the application.

      **Options**: `debug`, `info`, `warn`, `error`

      **Default**: `info`
    </ResponseField>

    <ResponseField name="save_logs" type="boolean">
      Whether to save logs to files in the `config/logs/` directory.

      **Default**: `false`

      <Note>
        When enabled, logs rotate automatically:
        - Max file size: 20MB
        - Max files: 7 days
      </Note>
    </ResponseField>

    <ResponseField name="log_failed_attempts" type="boolean">
      Whether to log failed authentication attempts for security monitoring.

      **Default**: `false`
    </ResponseField>

    <ResponseField name="telemetry" type="object">
      Telemetry configuration settings.

      <Expandable title="Telemetry">
        <ResponseField name="anonymous_usage" type="boolean">
          Whether to enable anonymous usage telemetry.

          **Default**: `true`
        </ResponseField>
      </Expandable>
    </ResponseField>

    <ResponseField name="notifications" type="object">
      Notification configuration settings.

      <Expandable title="Notification">
        <ResponseField name="product_updates" type="boolean">
          Whether to enable showing product updates notifications on the UI.

          **Default**: `true`
        </ResponseField>
        <ResponseField name="new_releases" type="boolean">
          Whether to enable showing new releases notifications on the UI.

          **Default**: `true`
        </ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>

### Server Configuration

<ResponseField name="server" type="object" required>
  Server ports, networking, and authentication settings.

  <Expandable title="Server">
    <ResponseField name="external_port" type="integer">
      The port for the front-end API that handles external requests.

      **Example**: `3000`
    </ResponseField>

    <ResponseField name="internal_port" type="integer">
      The port for the internal private-facing API.

      **Example**: `3001`
    </ResponseField>

    <ResponseField name="next_port" type="integer">
      The port for the frontend server (Next.js).

      **Example**: `3002`
    </ResponseField>

    <ResponseField name="integration_port" type="integer">
      The port for the integration API (optional).

      **Example**: `3003`
    </ResponseField>

    <ResponseField name="internal_hostname" type="string">
      The hostname of the Pangolin container for internal communication.

      **Example**: `pangolin`

      <Tip>
        If using Docker Compose, this should match your container name.
      </Tip>
    </ResponseField>

    <ResponseField name="session_cookie_name" type="string">
      The name of the session cookie for storing authentication tokens.

      **Example**: `p_session_token`

      **Default**: `p_session_token`
    </ResponseField>

    <ResponseField name="resource_access_token_param" type="string">
      Query parameter name for passing access tokens in requests.

      **Example**: `p_token`

      **Default**: `p_token`
    </ResponseField>

    <ResponseField name="resource_access_token_headers" type="object">
      HTTP headers for passing access tokens in requests.

      <Expandable title="Headers">
        <ResponseField name="id" type="string">
          Header name for access token ID.

          **Example**: `P-Access-Token-Id`
        </ResponseField>

        <ResponseField name="token" type="string">
          Header name for access token.

          **Example**: `P-Access-Token`
        </ResponseField>
      </Expandable>
    </ResponseField>

    <ResponseField name="resource_session_request_param" type="string">
      Query parameter for session request tokens.

      **Example**: `p_session_request`

      **Default**: `p_session_request`
    </ResponseField>

    <ResponseField name="cors" type="object">
      Cross-Origin Resource Sharing (CORS) configuration.

      <Expandable title="CORS">
        <ResponseField name="origins" type="array of strings">
          Allowed origins for cross-origin requests.

          **Example**: `["https://pangolin.example.com"]`
        </ResponseField>

        <ResponseField name="methods" type="array of strings">
          Allowed HTTP methods for CORS requests.

          **Example**: `["GET", "POST", "PUT", "DELETE", "PATCH"]`
        </ResponseField>

        <ResponseField name="allowed_headers" type="array of strings">
          Allowed HTTP headers in CORS requests.

          **Example**: `["X-CSRF-Token", "Content-Type"]`
        </ResponseField>

        <ResponseField name="credentials" type="boolean">
          Whether to allow credentials in CORS requests.

          **Default**: `true`
        </ResponseField>
      </Expandable>
    </ResponseField>

    <ResponseField name="trust_proxy" type="integer">
      Number of proxy headers to trust for client IP detection.

      **Example**: `1`

      **Default**: `1`

      <Tip>
        Use `1` if running behind a single reverse proxy like Traefik.
      </Tip>
    </ResponseField>

    <ResponseField name="dashboard_session_length_hours" type="integer">
      Dashboard session duration in hours.

      **Example**: `720` (30 days)

      **Default**: `720`
    </ResponseField>

    <ResponseField name="resource_session_length_hours" type="integer">
      Resource session duration in hours.

      **Example**: `720` (30 days)

      **Default**: `720`
    </ResponseField>

    <ResponseField name="secret" type="string" required>
      Secret key for encrypting sensitive data.

      **Environment Variable**: `SERVER_SECRET`

      **Minimum Length**: 8 characters

      **Example**: `"d28@a2b.2HFTe2bMtZHGneNYgQFKT2X4vm4HuXUXBcq6aVyNZjdGt6Dx-_A@9b3y"`

      <Warning>
        Generate a strong, random secret. This is used for encrypting sensitive data and should be kept secure.
      </Warning>
    </ResponseField>

    <ResponseField name="maxmind_db_path" type="string">
      Path to the MaxMind GeoIP database file for geolocation features.

      **Example**: `./config/GeoLite2-Country.mmdb`

      <Note>
        Used for IP geolocation functionality. Requires a MaxMind GeoLite2 or GeoIP2 database file.
      </Note>
    </ResponseField>
  </Expandable>
</ResponseField>

### Domain Configuration

<ResponseField name="domains" type="object" required>
  Domain settings for SSL certificates and routing.

  At least one domain must be configured.

  It is best to add it in the UI for ease of use or when you want the
  domain to *only be present in the org it was created in*.

  You should create it in the config file for permanence across installs
  and if you want the domain to be present in all orgs.

  <Expandable title="Domains">
    <ResponseField name="<domain_key>" type="object">
      Domain configuration with a unique key of your choice.

      <Expandable title="Domain Settings">
        <ResponseField name="base_domain" type="string" required>
          The base domain for this configuration.

          **Example**: `example.com`
        </ResponseField>

        <ResponseField name="cert_resolver" type="string" required>
          The Traefik certificate resolver name.

          **Example**: `letsencrypt`

          <Note>
            This must match the certificate resolver name in your Traefik configuration.
          </Note>
        </ResponseField>

        <ResponseField name="prefer_wildcard_cert" type="boolean">
          Whether to prefer wildcard certificates for this domain.

          **Example**: `true`

          <Tip>
            Useful for domains with many subdomains to reduce certificate management overhead.
          </Tip>
        </ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>

### Traefik Integration

<ResponseField name="traefik" type="object">
  Traefik reverse proxy configuration settings.

  <Expandable title="Traefik">
    <ResponseField name="http_entrypoint" type="string">
      The Traefik entrypoint name for HTTP traffic.

      **Example**: `web`

      <Note>
        Must match the entrypoint name in your Traefik configuration.
      </Note>
    </ResponseField>

    <ResponseField name="https_entrypoint" type="string">
      The Traefik entrypoint name for HTTPS traffic.

      **Example**: `websecure`

      <Note>
        Must match the entrypoint name in your Traefik configuration.
      </Note>
    </ResponseField>

    <ResponseField name="cert_resolver" type="string">
      The default certificate resolver for domains created through the UI.

      **Example**: `letsencrypt`

      <Note>
        This only applies to domains created through the Pangolin dashboard.
      </Note>
    </ResponseField>

    <ResponseField name="prefer_wildcard_cert" type="boolean">
      Whether to prefer wildcard certificates for UI-created domains.

      **Example**: `true`

      <Note>
        This only applies to domains created through the Pangolin dashboard.
      </Note>
    </ResponseField>

    <ResponseField name="additional_middlewares" type="array of strings">
      Additional Traefik middlewares to apply to resource routers.

      **Example**: `["middleware1", "middleware2"]`

      <Note>
        These middlewares must be defined in your Traefik dynamic configuration.
      </Note>
    </ResponseField>

    <ResponseField name="certificates_path" type="string">
      Path where SSL certificates are stored. This is used only with managed Pangolin deployments.

      **Example**: `/var/certificates`

      **Default**: `/var/certificates`
    </ResponseField>

    <ResponseField name="monitor_interval" type="integer">
      Interval in milliseconds for monitoring configuration changes.

      **Example**: `5000`

      **Default**: `5000`
    </ResponseField>

    <ResponseField name="dynamic_cert_config_path" type="string">
      Path to the dynamic certificate configuration file. This is used only with managed Pangolin deployments.

      **Example**: `/var/dynamic/cert_config.yml`

      **Default**: `/var/dynamic/cert_config.yml`
    </ResponseField>

    <ResponseField name="dynamic_router_config_path" type="string">
      Path to the dynamic router configuration file.

      **Example**: `/var/dynamic/router_config.yml`

      **Default**: `/var/dynamic/router_config.yml`
    </ResponseField>

    <ResponseField name="site_types" type="array of strings">
      Supported site types for Traefik configuration.

      **Example**: `["newt", "wireguard", "local"]`

      **Default**: `["newt", "wireguard", "local"]`
    </ResponseField>

    <ResponseField name="file_mode" type="boolean">
      Whether to use file-based configuration mode for Traefik.

      **Example**: `false`

      **Default**: `false`

      <Note>
        When enabled, uses file-based dynamic configuration instead of API-based updates.
      </Note>
    </ResponseField>

    <ResponseField name="pp_transport_prefix" type="string">
      Prefix used for transport-related configurations. References servers transport config in dynamic Traefik file.

      **Example**: `pp-transport-v`

      **Default**: `pp-transport-v`
    </ResponseField>
  </Expandable>
</ResponseField>

### Gerbil Tunnel Controller

<ResponseField name="gerbil" type="object" required>
  Gerbil tunnel controller settings for WireGuard tunneling.

  <Expandable title="Gerbil">
    <ResponseField name="base_endpoint" type="string" required>
      Domain name included in WireGuard configuration for tunnel connections.

      **Example**: `pangolin.example.com`
    </ResponseField>

    <ResponseField name="start_port" type="integer">
      Starting port for WireGuard tunnels.

      **Example**: `51820`
    </ResponseField>

    <ResponseField name="clients_start_port" type="integer">
      Starting port for client WireGuard relay and hole punch port.

      **Example**: `21820`
    </ResponseField>

    <ResponseField name="use_subdomain" type="boolean">
      Whether to assign unique subdomains to Gerbil exit nodes.

      **Default**: `false`

      <Warning>
        Keep this set to `false` for most deployments.
      </Warning>
    </ResponseField>

    <ResponseField name="subnet_group" type="string">
      IP address CIDR range for Gerbil exit node subnets.

      **Example**: `10.0.0.0/8`
    </ResponseField>

    <ResponseField name="block_size" type="integer">
      Block size for Gerbil exit node CIDR ranges.

      **Example**: `24`
    </ResponseField>

    <ResponseField name="site_block_size" type="integer">
      Block size for site CIDR ranges connected to Gerbil.

      **Example**: `26`
    </ResponseField>
  </Expandable>
</ResponseField>

### Organization Settings

<ResponseField name="orgs" type="object">
  Organization network configuration settings.

  <Expandable title="Organizations">
    <ResponseField name="block_size" type="integer">
      Block size for organization CIDR ranges.

      **Example**: `24`

      **Default**: `24`

      <Note>
        Determines the subnet size allocated to each organization for network isolation.
      </Note>
    </ResponseField>

    <ResponseField name="subnet_group" type="string">
      IP address CIDR range for organization subnets.

      **Example**: `100.90.128.0/24`

      **Default**: `100.90.128.0/24`

      <Note>
        Base subnet from which organization-specific subnets are allocated.
      </Note>
    </ResponseField>
  </Expandable>
</ResponseField>

### Rate Limiting

<ResponseField name="rate_limits" type="object">
  Rate limiting configuration for API requests.

  <Expandable title="Rate Limits">
    <ResponseField name="global" type="object">
      Global rate limit settings for all external API requests.

      <Expandable title="Global">
        <ResponseField name="window_minutes" type="integer">
          Time window for rate limiting in minutes.

          **Example**: `1`
        </ResponseField>

        <ResponseField name="max_requests" type="integer">
          Maximum number of requests allowed in the time window.

          **Example**: `100`
        </ResponseField>
      </Expandable>
    </ResponseField>

    <ResponseField name="auth" type="object">
      Rate limit settings specifically for authentication endpoints.

      <Expandable title="Auth Rate Limits">
        <ResponseField name="window_minutes" type="integer">
          Time window for authentication rate limiting in minutes.

          **Example**: `1`

          **Default**: `1`
        </ResponseField>

        <ResponseField name="max_requests" type="integer">
          Maximum number of authentication requests allowed in the time window.

          **Example**: `10`

          **Default**: `500`

          <Note>
            Consider setting this lower than global limits for security.
          </Note>
        </ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>

### Email Configuration

<ResponseField name="email" type="object">
  SMTP settings for sending transactional emails.

  <Expandable title="Email">
    <ResponseField name="smtp_host" type="string">
      SMTP server hostname.

      **Example**: `smtp.gmail.com`
    </ResponseField>

    <ResponseField name="smtp_port" type="integer">
      SMTP server port.

      **Example**: `587` (TLS) or `465` (SSL)
    </ResponseField>

    <ResponseField name="smtp_user" type="string">
      SMTP username.

      **Example**: `no-reply@example.com`
    </ResponseField>

    <ResponseField name="smtp_pass" type="string">
      SMTP password.

      **Environment Variable**: `EMAIL_SMTP_PASS`
    </ResponseField>

    <ResponseField name="smtp_secure" type="boolean">
      Whether to use secure connection (SSL/TLS).

      **Default**: `false`

      <Tip>
        Enable this when using port 465 (SSL).
      </Tip>
    </ResponseField>

    <ResponseField name="no_reply" type="string">
      From address for sent emails.

      **Example**: `no-reply@example.com`

      <Note>
        Usually the same as `smtp_user`.
      </Note>
    </ResponseField>

    <ResponseField name="smtp_tls_reject_unauthorized" type="boolean">
      Whether to fail on invalid server certificates.

      **Default**: `true`
    </ResponseField>
  </Expandable>
</ResponseField>

### Feature Flags

<ResponseField name="flags" type="object">
  Feature flags to control application behavior.

  <Expandable title="Flags">
    <ResponseField name="require_email_verification" type="boolean">
      Whether to require email verification for new users.

      **Default**: `false`

      <Warning>
        Only enable this if you have email configuration set up.
      </Warning>
    </ResponseField>

    <ResponseField name="disable_signup_without_invite" type="boolean">
      Whether to disable public user registration.

      **Default**: `false`

      <Note>
        Users can still sign up with valid invites when enabled.
      </Note>
    </ResponseField>

    <ResponseField name="disable_user_create_org" type="boolean">
      Whether to prevent users from creating organizations.

      **Default**: `false`

      <Note>
        Server admins can always create organizations.
      </Note>
    </ResponseField>

    <ResponseField name="allow_raw_resources" type="boolean">
      Whether to allow raw TCP/UDP resource creation.

      **Default**: `true`

      <Note>
        If set to `false`, users will only be able to create http/https resources.
      </Note>
    </ResponseField>

    <ResponseField name="enable_integration_api" type="boolean">
      Whether to enable the integration API.

      **Default**: `false`
    </ResponseField>

    <ResponseField name="disable_local_sites" type="boolean">
      Whether to disable local site creation and management.

      **Default**: `false`

      <Note>
        When enabled, users cannot create sites that connect to local networks.
      </Note>
    </ResponseField>

    <ResponseField name="disable_basic_wireguard_sites" type="boolean">
      Whether to disable basic WireGuard site functionality.

      **Default**: `false`

      <Note>
        When enabled, only advanced WireGuard configurations are allowed.
      </Note>
    </ResponseField>

    <ResponseField name="disable_config_managed_domains" type="boolean">
      Whether to disable domains managed through the configuration file.

      **Default**: `false`

      <Note>
        When enabled, only domains created through the UI are allowed.
      </Note>
    </ResponseField>
  </Expandable>
</ResponseField>

### Database Configuration

<ResponseField name="postgres" type="object">
  PostgreSQL database configuration (optional).

  <Expandable title="PostgreSQL">
    <ResponseField name="connection_string" type="string" required>
      PostgreSQL connection string.

      **Example**: `postgresql://user:password@host:port/database`

      <Note>
        See [PostgreSQL documentation](/self-host/advanced/database-options#postgresql) for setup instructions.
      </Note>
    </ResponseField>

    <ResponseField name="replicas" type="array of objects">
      Read-only replica database configurations for load balancing.

      <Expandable title="Replica Configuration">
        <ResponseField name="connection_string" type="string" required>
          Connection string for the read replica database.

          **Example**: `postgresql://user:password@replica-host:port/database`
        </ResponseField>
      </Expandable>
    </ResponseField>

    <ResponseField name="pool" type="object">
      Database connection pool settings.

      <Expandable title="Pool Settings">
        <ResponseField name="max_connections" type="integer">
          Maximum number of connections to the primary database.

          **Default**: `20`

          **Example**: `50`
        </ResponseField>

        <ResponseField name="max_replica_connections" type="integer">
          Maximum number of connections to replica databases.

          **Default**: `10`

          **Example**: `25`
        </ResponseField>

        <ResponseField name="idle_timeout_ms" type="integer">
          Time in milliseconds before idle connections are closed.

          **Default**: `30000` (30 seconds)

          **Example**: `60000`
        </ResponseField>

        <ResponseField name="connection_timeout_ms" type="integer">
          Time in milliseconds to wait for a database connection.

          **Default**: `5000` (5 seconds)

          **Example**: `10000`
        </ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>

## Environment Variables

Some configuration values can be set using environment variables for enhanced security:

| Name | Variable | Config |
|------|----------|--------|
| Server Secret | `SERVER_SECRET` | `server.secret` |
| Email Password | `EMAIL_SMTP_PASS` | `email.smtp_pass` |
| PostgreSQL Connection String | `POSTGRES_CONNECTION_STRING` | `postgres.connection_string` |