Let’s break down what this docker-compose.yml file does in detail for deploying the Unifi Controller, a powerful network management tool, with detailed explanations.

Here’s a detailed explanation:

Compose File Metadata

  • Filename: docker-compose.yml
  • Author: GJS (homelab-alpha)
  • Date: Jun 15, 2024
  • Description: Configures a Docker network and service for Unifi Controller.
  • RAW Compose File: docker-compose.yml

Networks Configuration 

networks:
  unifi-controller_net:
    internal: false
    external: false
    name: unifi-controller
    driver: bridge
    ipam:
      driver: default
      config:
        - subnet: 172.20.13.0/24
          ip_range: 172.20.13.0/24
          gateway: 172.20.13.1
    driver_opts:
      com.docker.network.bridge.default_bridge: "false"
      com.docker.network.bridge.enable_icc: "true"
      com.docker.network.bridge.enable_ip_masquerade: "true"
      com.docker.network.bridge.host_binding_ipv4: "0.0.0.0"
      com.docker.network.bridge.name: "unifi-controller"
      com.docker.network.driver.mtu: "1500"
    labels:
      com.unifi-controller.network.description: "is an isolated bridge network."
  • networks: Defines a custom network named unifi-controller_net.
  • internal: false: The network is accessible externally.
  • external: false: The network is created within this docker-compose file, not externally defined.
  • name: unifi-controller: Specifies the name of the network.
  • driver: bridge: Uses the bridge driver to create an isolated network.
  • ipam: Configures IP address management for the network.
    • driver: default: Uses the default IPAM driver.
    • config: Sets up the IP address configuration.
      • subnet: Defines the subnet for the network.
      • ip_range: Restricts the IP range within the subnet.
      • gateway: Sets the gateway for the network.
  • driver_opts: Additional options for the network driver.
    • com.docker.network.bridge.default_bridge: “false”: Indicates this is not the default Docker bridge.
    • com.docker.network.bridge.enable_icc: “true”: Enables inter-container communication.
    • com.docker.network.bridge.enable_ip_masquerade: “true”: Allows outbound traffic to appear as if it came from the host.
    • com.docker.network.bridge.host_binding_ipv4: “0.0.0.0”: Binds the bridge to all available IP addresses on the host.
    • com.docker.network.bridge.name: “unifi-controller”: Names the bridge network.
    • com.docker.network.driver.mtu: “1500”: Sets the Maximum Transmission Unit size for the network.
  • labels: Metadata for the network.
    • com.unifi-controller.network.description: A description label for the network.

Unifi Controller Service 

services:
  unifi-controller_app:
    restart: unless-stopped
    logging:
      driver: "json-file"
      options:
        max-size: "1M"
        max-file: "2"
    container_name: unifi-controller
    image: linuxserver/unifi-controller:latest
    pull_policy: if_not_present
    volumes:
      - /docker/unifi-controller/production/app:/config
    environment:
      PUID: "1000"
      PGID: "1000"
      TZ: Europe/Amsterdam # Adjust the timezone to match your local timezone. You can find the full list of timezones here https://en.wikipedia.org/wiki/List_of_tz_database_time_zones.
      MEM_LIMIT: "2048M"
    domainname: unifi-controller.local # Customize this with your own domain, e.g., `unifi-controller.local` to `unifi-controller.your-fqdn-here.com`.
    hostname: unifi-controller
    networks:
      unifi-controller_net:
        ipv4_address: 172.20.13.2
    ports:
      - "1900:1900/udp" # Required for Make controller discoverable on L2
      - "3478:3478/udp" # Unifi STUN port
      - "5514:5514/tcp" # Remote syslog port
      - "6789:6789/tcp" # For mobile throughput test
      - "8080:8080/tcp" # Required for device communication
      - "8443:8443/tcp" # Unifi web admin port
      - "8843:8843/tcp" # Unifi guest portal HTTPS redirect port
      - "8880:8880/tcp" # Unifi guest portal HTTP redirect port
      - "10001:10001/udp" # Required for AP discovery
    security_opt:
      - no-new-privileges:true
    labels:
      com.docker.compose.project: "unifi-controller"
      com.unifi-controller.description:
        "is an end-to-end system of network devices across different locations —
        all controlled from a single interface."
    healthcheck:
      disable: true
  • unifi-controller_app: The service name for the Unifi Controller container.
    • restart: unless-stopped: Ensures the container restarts unless it is explicitly stopped.
    • logging: Configures logging for the container.
      • driver: “json-file”: Uses JSON file logging driver.
      • max-size: “1M”: Limits log file size to 1MB.
      • max-file: “2”: Keeps a maximum of 2 log files.
    • container_name: unifi-controller: Names the container “unifi-controller”.
    • image: linuxserver/unifi-controller:latest: Uses the latest Unifi Controller image from Docker Hub.
    • pull_policy: if_not_present: Pulls the image only if it’s not already present locally.
    • volumes: Mounts host directories or files into the container.
      • /docker/unifi-controller/production/app:/config: Mounts the Unifi Controller configuration directory.
    • environment: Sets environment variables.
      • PUID: “1000”: Sets the user ID.
      • PGID: “1000”: Sets the group ID.
      • TZ: Europe/Amsterdam: Sets the timezone to Amsterdam.
      • MEM_LIMIT: “2048M”: Limits the memory usage of the container to 2048MB.
    • domainname: unifi-controller.local: Sets the domain name for the container.
    • hostname: unifi-controller: Sets the hostname for the container.
    • networks: Connects the service to the unifi-controller_net network.
      • ipv4_address: 172.20.13.2: Assigns a static IP address to the container.
    • ports: Maps container ports to host ports.
      • 1900:1900/udp: Maps the UDP port required for controller discoverability.
      • 3478:3478/udp: Maps the UDP port for Unifi STUN.
      • 5514:5514/tcp: Maps the TCP port for remote syslog.
      • 6789:6789/tcp: Maps the TCP port for mobile throughput test.
      • 8080:8080/tcp: Maps the TCP port required for device communication.
      • 8443:8443/tcp: Maps the TCP port for Unifi web admin.
      • 8843:8843/tcp: Maps the TCP port for Unifi guest portal HTTPS redirect.
      • 8880:8880/tcp: Maps the TCP port for Unifi guest portal HTTP redirect.
      • 10001:10001/udp: Maps the UDP port required for AP discovery.
    • security_opt: Security options for the container.
      • no-new-privileges:true: Ensures the container does not gain new privileges.
    • labels: Metadata for the container.
      • com.docker.compose.project: “unifi-controller”: Project label.
      • com.unifi-controller.description: Description label for Unifi Controller.
    • healthcheck: Healthcheck configuration.
      • disable: true: Disables health checks for the container.

Conclusion

This docker-compose.yml file sets up a Unifi Controller with its own custom bridge network. The configuration includes a persistent storage setup for Unifi’s configuration directory. Environment variables customize the setup, including timezone and memory limits. The service is configured to restart unless stopped manually, with logging options to manage log size and retention. The network settings ensure the Unifi container has a static IP within the specified subnet, and various ports are mapped for Unifi services. Security options enhance container security by preventing privilege escalation.

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Last updated 22 Sep 2024, 12:15 CEST . history