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Update tls.md to mention using the full cert chain #2243

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Nov 18, 2024
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Update tls.md to mention using the full cert chain #2243

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2 changes: 2 additions & 0 deletions docs/ref/tls.md
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Expand Up @@ -9,6 +9,8 @@ tls_cert_path: ""
tls_key_path: ""
```

The certificate should contain the full chain, else some clients, like the Tailscale Android client, will reject it.

## Let's Encrypt / ACME

To get a certificate automatically via [Let's Encrypt](https://letsencrypt.org/), set `tls_letsencrypt_hostname` to the desired certificate hostname. This name must resolve to the IP address(es) headscale is reachable on (i.e., it must correspond to the `server_url` configuration parameter). The certificate and Let's Encrypt account credentials will be stored in the directory configured in `tls_letsencrypt_cache_dir`. If the path is relative, it will be interpreted as relative to the directory the configuration file was read from.
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