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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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{{
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[{'provider': 'domains.google.com', 'protocol': 'dyndn2', 'username': 'XXXXXXXXXXXXXXXX', 'password': 'XXXXXXXXXXXXXXXX', 'domain': matrix_domain}]
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}}
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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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