Slavi Pantaleev
4 years ago
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# Dynamic DNS
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## Setup
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Most cloud providers / ISPs will charge you extra for a static IP address. If you're
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not hosting a highly reliable homeserver you can workaround this via dynamic DNS. To
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set this up, you'll need to get the username/password from your DNS provider. For
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google domains, this process is described [here](https://support.google.com/domains/answer/6147083).
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After you've gotten the proper credentials you can add the following config to your inventory/host_vars/matrix.DOMAIN/vars.yml:
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```yaml
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matrix_dynamic_dns_enabled: true
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matrix_dynamic_dns_domain_configurations:
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- provider: domains.google.com
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protocol: dyndn2
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username: XXXXXXXXXXXXXXXX
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password: XXXXXXXXXXXXXXXX
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domain: "{{ matrix_domain }}"
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```
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## Additional Reading
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Additional resources:
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- https://matrix.org/docs/guides/free-small-matrix-server
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# Whether dynamic dns is enabled
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matrix_dynamic_dns_enabled: true
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# The dynamic dns daemon interval
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matrix_dynamic_dns_daemon_interval: '300'
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# The docker container to use when in mode
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matrix_dynamic_dns_docker_image: 'linuxserver/ddclient:v3.9.1-ls45'
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# The image to force pull
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matrix_dynamic_dns_docker_image_force_pull: "{{ matrix_dynamic_dns_docker_image.endswith(':latest') }}"
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# List of extra arguments to pass to the ontainer mode
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matrix_dynamic_dns_container_extra_arguments: []
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# List of wanted services when running in mode
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matrix_dynamic_dns_systemd_wanted_services_list: []
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# List of required services when running in mode
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matrix_dynamic_dns_systemd_required_services_list: ['docker.service']
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# Build the container from source when running in mode
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matrix_dynamic_dns_container_image_self_build: false
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# Config paths
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matrix_dynamic_dns_base_path: "{{ matrix_base_data_path }}/dynamic-dns"
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matrix_dynamic_dns_config_path: "{{ matrix_dynamic_dns_base_path }}/config"
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matrix_dynamic_dns_docker_src_files_path: "{{ matrix_dynamic_dns_base_path }}/docker-src"
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# Holds the configurations (the domains to update DNS for, the providers they use, etc.)
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#
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# Example:
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# matrix_dynamic_dns_domain_configurations:
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# - provider: domains.google.com
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# protocol: dyndn2
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# username: XXXXXXXXXXXXXXXX
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# password: XXXXXXXXXXXXXXXX
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# domain: "{{ matrix_domain }}"
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matrix_dynamic_dns_domain_configurations: []
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# Config options
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matrix_dynamic_dns_additional_configuration_blocks: []
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matrix_dynamic_dns_use: "web"
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- set_fact:
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matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-dynamic-dns'] }}"
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when: "matrix_dynamic_dns_enabled|bool"
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---
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- name: Ensure Dynamic DNS image is pulled
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docker_image:
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name: "{{ matrix_dynamic_dns_docker_image }}"
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source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
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force_source: "{{ matrix_dynamic_dns_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
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force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_dynamic_dns_docker_image_force_pull }}"
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when: matrix_dynamic_dns_enabled|bool and not matrix_dynamic_dns_container_image_self_build
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- name: Ensure Dynamic DNS paths exist
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file:
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path: "{{ item.path }}"
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state: directory
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mode: 0751
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owner: "{{ matrix_user_username }}"
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group: "{{ matrix_user_groupname }}"
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with_items:
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- { path: "{{ matrix_dynamic_dns_base_path }}", when: true }
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- { path: "{{ matrix_dynamic_dns_config_path }}", when: true }
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- { path: "{{ matrix_dynamic_dns_docker_src_files_path }}", when: "{{ matrix_dynamic_dns_container_image_self_build }}" }
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when: matrix_dynamic_dns_enabled|bool and item.when|bool
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- name: Ensure Dynamic DNS repository is present on self build
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git:
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repo: https://github.com/linuxserver/docker-ddclient.git
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dest: "{{ matrix_dynamic_dns_docker_src_files_path }}"
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force: "yes"
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when: "matrix_dynamic_dns_enabled|bool and matrix_dynamic_dns_container_image_self_build"
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- name: Ensure Dynamic DNS Docker image is built
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docker_image:
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name: "{{ matrix_dynamic_dns_docker_image }}"
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source: build
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build:
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dockerfile: Dockerfile
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path: "{{ matrix_dynamic_dns_docker_src_files_path }}"
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pull: yes
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when: "matrix_dynamic_dns_enabled|bool and matrix_dynamic_dns_container_image_self_build"
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- name: Ensure Dynamic DNS ddclient.conf installed
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template:
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src: "{{ role_path }}/templates/ddclient.conf.j2"
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dest: "{{ matrix_dynamic_dns_config_path }}/ddclient.conf"
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mode: 0644
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owner: "{{ matrix_user_username }}"
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group: "{{ matrix_user_groupname }}"
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- name: Ensure matrix-dynamic-dns.service installed
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template:
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src: "{{ role_path }}/templates/systemd/matrix-dynamic-dns.service.j2"
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dest: "/etc/systemd/system/matrix-dynamic-dns.service"
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mode: 0644
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register: matrix_dynamic_dns_systemd_service_result
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- name: Ensure systemd reloaded after matrix-dynamic-dns.service installation
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service:
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daemon_reload: yes
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when: "matrix_dynamic_dns_systemd_service_result.changed"
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- import_tasks: "{{ role_path }}/tasks/init.yml"
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tags:
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- always
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- import_tasks: "{{ role_path }}/tasks/validate_config.yml"
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when: "run_setup|bool and matrix_dynamic_dns_enabled|bool"
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tags:
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- setup-all
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- setup-dynamic-dns
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- import_tasks: "{{ role_path }}/tasks/install.yml"
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when: "run_setup|bool and matrix_dynamic_dns_enabled|bool"
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tags:
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- setup-all
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- setup-dynamic-dns
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- import_tasks: "{{ role_path }}/tasks/uninstall.yml"
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when: "run_setup|bool and not matrix_dynamic_dns_enabled|bool"
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tags:
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- setup-all
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- setup-dynamic-dns
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---
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- name: Check existence of matrix-dynamic-dns service
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stat:
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path: "{{ systemd_path }}/matrix-dynamic-dns.service"
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register: matrix_dynamic_dns_service_stat
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- name: Ensure matrix-dynamic-dns is stopped
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service:
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name: matrix-dynamic-dns
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state: stopped
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daemon_reload: yes
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when: "matrix_dynamic_dns_service_stat.stat.exists"
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- name: Ensure matrix-dynamic-dns.service doesn't exist
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file:
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path: "{{ systemd_path }}/matrix-dynamic-dns.service"
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state: absent
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when: "matrix_dynamic_dns_service_stat.stat.exists"
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- name: Ensure systemd reloaded after matrix-dynamic-dns.service removal
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service:
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daemon_reload: yes
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when: "matrix_dynamic_dns_service_stat.stat.exists"
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---
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- name: Fail if no configurations specified
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fail:
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msg: >-
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You need to define at least one configuration in `matrix_dynamic_dns_domain_configurations` for using matrix-dynamic-dns.
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when: "matrix_dynamic_dns_domain_configurations|length == 0"
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- name: Fail if required settings not defined in configuration blocks
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fail:
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msg: >-
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One of the configurations in matrix_dynamic_dns_domain_configurations is missing a required key (domain, provider, protocol).
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when: "'domain' not in configuration or 'provider' not in configuration or 'protocol' not in configuration"
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with_items: "{{ matrix_dynamic_dns_domain_configurations }}"
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loop_control:
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loop_var: configuration
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daemon={{ matrix_dynamic_dns_daemon_interval }}
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syslog=no
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pid=/var/run/ddclient/ddclient.pid
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ssl=yes
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use={{ matrix_dynamic_dns_use }}
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{% for dynamic_dns_domain_configuration in matrix_dynamic_dns_domain_configurations %}
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protocol={{ dynamic_dns_domain_configuration.protocol }}
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server={{ dynamic_dns_domain_configuration.provider }} {% if 'username' in dynamic_dns_domain_configuration %}
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login='{{ dynamic_dns_domain_configuration.username }}' {% endif %} {% if 'password' in dynamic_dns_domain_configuration %}
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password='{{ dynamic_dns_domain_configuration.password }}' {% endif %} {% if 'static' in dynamic_dns_domain_configuration %}
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static=yes {% endif %} {% if 'custom' in dynamic_dns_domain_configuration %}
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custom=yes {% endif %} {% if 'zone' in dynamic_dns_domain_configuration %}
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zone={{ dynamic_dns_domain_configuration.zone }} {% endif %} {% if 'ttl' in dynamic_dns_domain_configuration %}
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ttl={{ dynamic_dns_domain_configuration.ttl }} {% endif %} {% if 'mx' in dynamic_dns_domain_configuration %}
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mx={{ dynamic_dns_domain_configuration.mx }} {% endif %} {% if 'wildcard' in dynamic_dns_domain_configuration %}
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wildcard=yes {% endif %}
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{{ dynamic_dns_domain_configuration.domain }}
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{% endfor %}
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{% for matrix_dynamic_dns_additional_configuration in matrix_dynamic_dns_additional_configuration_blocks %}
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{{ matrix_dynamic_dns_additional_configuration }}
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{% endfor %}
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#jinja2: lstrip_blocks: "True"
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[Unit]
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Description=Matrix Dynamic DNS
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{% for service in matrix_dynamic_dns_systemd_required_services_list %}
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Requires={{ service }}
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After={{ service }}
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{% endfor %}
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{% for service in matrix_dynamic_dns_systemd_wanted_services_list %}
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Wants={{ service }}
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{% endfor %}
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[Service]
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Type=simple
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ExecStartPre=-{{ matrix_host_command_docker }} kill matrix-dynamic-dns
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ExecStartPre=-{{ matrix_host_command_docker }} rm matrix-dynamic-dns
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ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-dynamic-dns \
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--log-driver=none \
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--network={{ matrix_docker_network }} \
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-e PUID={{ matrix_user_uid }} \
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-e PGID={{ matrix_user_gid }} \
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-v {{ matrix_dynamic_dns_config_path }}:/config:z \
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{% for arg in matrix_dynamic_dns_container_extra_arguments %}
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{{ arg }} \
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{% endfor %}
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{{ matrix_dynamic_dns_docker_image }}
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ExecStop=-{{ matrix_host_command_docker }} kill matrix-dynamic-dns
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ExecStop=-{{ matrix_host_command_docker }} rm matrix-dynamic-dns
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Restart=always
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RestartSec=30
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SyslogIdentifier=matrix-dynamic-dns
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[Install]
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WantedBy=multi-user.target
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