DDNS¶

Overview¶

DDNS is a Saltbox-specific Dynamic DNS service that automatically manages DNS records with Cloudflare based on Traefik routes. This container monitors Traefik's API for active routes and automatically creates or updates corresponding DNS records in Cloudflare, supporting both IPv4 and IPv6.

Manual

Releases

Community

Configuration¶

Prerequisites¶

Cloudflare must be enabled in your Saltbox configuration
IPv4 or IPv6 DNS management must be enabled in adv_settings.yml
Valid Cloudflare API credentials must be configured in accounts.yml

Custom URLs¶

You can manage additional custom URLs by setting the ddns_custom_urls variable in your Saltbox inventory:

ddns_custom_urls: "subdomain1.domain.com,subdomain2.domain.com"

Notes¶

This service only works with Cloudflare DNS
The container requires access to Traefik's API to discover routes
DNS records are automatically managed based on active Traefik routes

Deployment¶

sb install ddns

Usage¶

The DDNS container automatically monitors Traefik's API endpoint for active routes and creates or updates corresponding DNS records in Cloudflare based on your configured IP version preferences.

Role Defaults¶

Use the Inventory to customize variables. (1)

Example override
```
ddns_name: "custom_value"
```
Avoid overriding variables ending in _default

When overriding variables that end in _default (like ddns_docker_envs_default), you replace the entire default configuration. Future updates that add new default values will not be applied to your setup, potentially breaking functionality.

Instead, use the corresponding _custom variable (like ddns_docker_envs_custom) to add your changes. Custom values are merged with defaults, ensuring you receive updates.

BasicsSettingsDockerDocker+Global Override Options

ddns_name

# Type: string
ddns_name: ddns

ddns_role_custom_urls

# Comma separated FQDN's that you want the container to manage
# Type: string
ddns_role_custom_urls: ""

ddns_role_delay

# Type: string
ddns_role_delay: "60"

Container

ddns_role_docker_container

# Type: string
ddns_role_docker_container: "{{ ddns_name }}"

Image

ddns_role_docker_image_pull

# Type: bool (true/false)
ddns_role_docker_image_pull: true

ddns_role_docker_image_repo

# Type: string
ddns_role_docker_image_repo: "saltydk/dns"

ddns_role_docker_image_tag

# Type: string
ddns_role_docker_image_tag: "latest"

ddns_role_docker_image

# Type: string
ddns_role_docker_image: "{{ lookup('role_var', '_docker_image_repo', role='ddns') }}:{{ lookup('role_var', '_docker_image_tag', role='ddns') }}"

Envs

ddns_role_docker_envs_default

# Type: dict
ddns_role_docker_envs_default:
  TZ: "{{ tz }}"
  CLOUDFLARE_API_KEY: "{{ cloudflare.api }}"
  CLOUDFLARE_EMAIL: "{{ cloudflare.email }}"
  CLOUDFLARE_PROXY_DEFAULT: "{{ dns_proxied | string }}"
  TRAEFIK_API_URL: "http://traefik:8080"
  TRAEFIK_ENTRYPOINTS: "websecure,web"
  CUSTOM_URLS: "{{ lookup('role_var', '_custom_urls', role='ddns') if (lookup('role_var', '_custom_urls', role='ddns') | length > 0) else omit }}"
  IP_VERSION: "{{ 'both' if (dns_ipv4_enabled and dns_ipv6_enabled) else ('4' if dns_ipv4_enabled else '6') }}"
  DELAY: "{{ lookup('role_var', '_delay', role='ddns') }}"

ddns_role_docker_envs_custom

# Type: dict
ddns_role_docker_envs_custom: {}

Volumes

ddns_role_docker_volumes_global

# Type: bool (true/false)
ddns_role_docker_volumes_global: false

Mounts

ddns_role_docker_mounts_default

# Type: list
ddns_role_docker_mounts_default:
  - target: /tmp
    type: tmpfs

ddns_role_docker_mounts_custom

# Type: list
ddns_role_docker_mounts_custom: []

Hostname

ddns_role_docker_hostname

# Type: string
ddns_role_docker_hostname: "{{ ddns_name }}"

Networks

ddns_role_docker_networks_alias

# Type: string
ddns_role_docker_networks_alias: "{{ ddns_name }}"

ddns_role_docker_networks_default

# Type: list
ddns_role_docker_networks_default: []

ddns_role_docker_networks_custom

# Type: list
ddns_role_docker_networks_custom: []

Restart Policy

ddns_role_docker_restart_policy

# Type: string
ddns_role_docker_restart_policy: unless-stopped

State

ddns_role_docker_state

# Type: string
ddns_role_docker_state: started

Init

ddns_role_docker_init

# Type: bool (true/false)
ddns_role_docker_init: true

Dependencies

ddns_role_depends_on

# Type: string
ddns_role_depends_on: "traefik"

ddns_role_depends_on_delay

# Type: string (quoted number)
ddns_role_depends_on_delay: "10"

ddns_role_depends_on_healthchecks

# Type: string ("true"/"false")
ddns_role_depends_on_healthchecks: "false"

The following advanced options are available via create_docker_container but are not defined in the role. See: docker_container module

Resource Limits

ddns_role_docker_blkio_weight

# Type: int
ddns_role_docker_blkio_weight:

ddns_role_docker_cpu_period

# Type: int
ddns_role_docker_cpu_period:

ddns_role_docker_cpu_quota

# Type: int
ddns_role_docker_cpu_quota:

ddns_role_docker_cpu_shares

# Type: int
ddns_role_docker_cpu_shares:

ddns_role_docker_cpus

# Type: string
ddns_role_docker_cpus:

ddns_role_docker_cpuset_cpus

# Type: string
ddns_role_docker_cpuset_cpus:

ddns_role_docker_cpuset_mems

# Type: string
ddns_role_docker_cpuset_mems:

ddns_role_docker_kernel_memory

# Type: string
ddns_role_docker_kernel_memory:

ddns_role_docker_memory

# Type: string
ddns_role_docker_memory:

ddns_role_docker_memory_reservation

# Type: string
ddns_role_docker_memory_reservation:

ddns_role_docker_memory_swap

# Type: string
ddns_role_docker_memory_swap:

ddns_role_docker_memory_swappiness

# Type: int
ddns_role_docker_memory_swappiness:

ddns_role_docker_shm_size

# Type: string
ddns_role_docker_shm_size:

Security & Devices

ddns_role_docker_cap_drop

# Type: list
ddns_role_docker_cap_drop:

ddns_role_docker_cgroupns_mode

# Type: string
ddns_role_docker_cgroupns_mode:

ddns_role_docker_device_cgroup_rules

# Type: list
ddns_role_docker_device_cgroup_rules:

ddns_role_docker_device_read_bps

# Type: list
ddns_role_docker_device_read_bps:

ddns_role_docker_device_read_iops

# Type: list
ddns_role_docker_device_read_iops:

ddns_role_docker_device_requests

# Type: list
ddns_role_docker_device_requests:

ddns_role_docker_device_write_bps

# Type: list
ddns_role_docker_device_write_bps:

ddns_role_docker_device_write_iops

# Type: list
ddns_role_docker_device_write_iops:

ddns_role_docker_devices

# Type: list
ddns_role_docker_devices:

ddns_role_docker_devices_default

# Type: string
ddns_role_docker_devices_default:

ddns_role_docker_groups

# Type: list
ddns_role_docker_groups:

ddns_role_docker_privileged

# Type: bool (true/false)
ddns_role_docker_privileged:

ddns_role_docker_security_opts

# Type: list
ddns_role_docker_security_opts:

ddns_role_docker_user

# Type: string
ddns_role_docker_user:

ddns_role_docker_userns_mode

# Type: string
ddns_role_docker_userns_mode:

Networking

ddns_role_docker_dns_opts

# Type: list
ddns_role_docker_dns_opts:

ddns_role_docker_dns_search_domains

# Type: list
ddns_role_docker_dns_search_domains:

ddns_role_docker_dns_servers

# Type: list
ddns_role_docker_dns_servers:

ddns_role_docker_domainname

# Type: string
ddns_role_docker_domainname:

ddns_role_docker_exposed_ports

# Type: list
ddns_role_docker_exposed_ports:

ddns_role_docker_hosts

# Type: dict
ddns_role_docker_hosts:

ddns_role_docker_hosts_use_common

# Type: bool (true/false)
ddns_role_docker_hosts_use_common:

ddns_role_docker_ipc_mode

# Type: string
ddns_role_docker_ipc_mode:

ddns_role_docker_links

# Type: list
ddns_role_docker_links:

ddns_role_docker_network_mode

# Type: string
ddns_role_docker_network_mode:

ddns_role_docker_pid_mode

# Type: string
ddns_role_docker_pid_mode:

ddns_role_docker_ports

# Type: list
ddns_role_docker_ports:

ddns_role_docker_uts

# Type: string
ddns_role_docker_uts:

Storage

ddns_role_docker_keep_volumes

# Type: bool (true/false)
ddns_role_docker_keep_volumes:

ddns_role_docker_storage_opts

# Type: dict
ddns_role_docker_storage_opts:

ddns_role_docker_tmpfs

# Type: list
ddns_role_docker_tmpfs:

ddns_role_docker_volume_driver

# Type: string
ddns_role_docker_volume_driver:

ddns_role_docker_volumes

# Type: list
ddns_role_docker_volumes:

ddns_role_docker_volumes_from

# Type: list
ddns_role_docker_volumes_from:

ddns_role_docker_working_dir

# Type: string
ddns_role_docker_working_dir:

Monitoring & Lifecycle

ddns_role_docker_auto_remove

# Type: bool (true/false)
ddns_role_docker_auto_remove:

ddns_role_docker_cleanup

# Type: bool (true/false)
ddns_role_docker_cleanup:

ddns_role_docker_force_kill

# Type: string
ddns_role_docker_force_kill:

ddns_role_docker_healthcheck

# Type: dict
ddns_role_docker_healthcheck:

ddns_role_docker_healthy_wait_timeout

# Type: int
ddns_role_docker_healthy_wait_timeout:

ddns_role_docker_kill_signal

# Type: string
ddns_role_docker_kill_signal:

ddns_role_docker_log_driver

# Type: string
ddns_role_docker_log_driver:

ddns_role_docker_log_options

# Type: dict
ddns_role_docker_log_options:

ddns_role_docker_oom_killer

# Type: bool (true/false)
ddns_role_docker_oom_killer:

ddns_role_docker_oom_score_adj

# Type: int
ddns_role_docker_oom_score_adj:

ddns_role_docker_output_logs

# Type: bool (true/false)
ddns_role_docker_output_logs:

ddns_role_docker_paused

# Type: bool (true/false)
ddns_role_docker_paused:

ddns_role_docker_recreate

# Type: bool (true/false)
ddns_role_docker_recreate:

ddns_role_docker_restart_retries

# Type: int
ddns_role_docker_restart_retries:

ddns_role_docker_stop_timeout

# Type: int
ddns_role_docker_stop_timeout:

Other Options

ddns_role_docker_capabilities

# Type: list
ddns_role_docker_capabilities:

ddns_role_docker_cgroup_parent

# Type: string
ddns_role_docker_cgroup_parent:

ddns_role_docker_commands

# Type: list
ddns_role_docker_commands:

ddns_role_docker_create_timeout

# Type: int
ddns_role_docker_create_timeout:

ddns_role_docker_entrypoint

# Type: string
ddns_role_docker_entrypoint:

ddns_role_docker_env_file

# Type: string
ddns_role_docker_env_file:

ddns_role_docker_labels

# Type: dict
ddns_role_docker_labels:

ddns_role_docker_labels_use_common

# Type: bool (true/false)
ddns_role_docker_labels_use_common:

ddns_role_docker_read_only

# Type: bool (true/false)
ddns_role_docker_read_only:

ddns_role_docker_runtime

# Type: string
ddns_role_docker_runtime:

ddns_role_docker_sysctls

# Type: list
ddns_role_docker_sysctls:

ddns_role_docker_ulimits

# Type: list
ddns_role_docker_ulimits:

ddns_role_autoheal_enabled

# Enable or disable Autoheal monitoring for the container created when deploying
# Type: bool (true/false)
ddns_role_autoheal_enabled: true

ddns_role_custom_urls

# Type: string
ddns_role_custom_urls:

ddns_role_delay

# Type: string
ddns_role_delay:

ddns_role_depends_on

# List of container dependencies that must be running before the container start
# Type: string
ddns_role_depends_on: ""

ddns_role_depends_on_delay

# Delay in seconds before starting the container after dependencies are ready
# Type: string (quoted number)
ddns_role_depends_on_delay: "0"

ddns_role_depends_on_healthchecks

# Enable healthcheck waiting for container dependencies
# Type: string ("true"/"false")
ddns_role_depends_on_healthchecks:

ddns_role_diun_enabled

# Enable or disable Diun update notifications for the container created when deploying
# Type: bool (true/false)
ddns_role_diun_enabled: true

ddns_role_docker_controller

# Enable or disable Saltbox Docker Controller management for the container
# Type: bool (true/false)
ddns_role_docker_controller: true

ddns_role_docker_image_repo

# Type: string
ddns_role_docker_image_repo:

ddns_role_docker_image_tag

# Type: string
ddns_role_docker_image_tag:

ddns_role_docker_volumes_download

# Type: bool (true/false)
ddns_role_docker_volumes_download: