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101 lines
3.4 KiB
Markdown
101 lines
3.4 KiB
Markdown
# Running headscale behind a reverse proxy
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Running headscale behind a reverse proxy is useful when running multiple applications on the same server, and you want to reuse the same external IP and port - usually tcp/443 for HTTPS.
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### WebSockets
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The reverse proxy MUST be configured to support WebSockets, as it is needed for clients running Tailscale v1.30+.
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WebSockets support is required when using the headscale embedded DERP server. In this case, you will also need to expose the UDP port used for STUN (by default, udp/3478). Please check our [config-example.yaml](https://github.com/juanfont/headscale/blob/main/config-example.yaml).
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### TLS
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Headscale can be configured not to use TLS, leaving it to the reverse proxy to handle. Add the following configuration values to your headscale config file.
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```yaml
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server_url: https://<YOUR_SERVER_NAME> # This should be the FQDN at which headscale will be served
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listen_addr: 0.0.0.0:8080
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metrics_listen_addr: 0.0.0.0:9090
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tls_cert_path: ""
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tls_key_path: ""
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```
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## nginx
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The following example configuration can be used in your nginx setup, substituting values as necessary. `<IP:PORT>` should be the IP address and port where headscale is running. In most cases, this will be `http://localhost:8080`.
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```Nginx
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map $http_upgrade $connection_upgrade {
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default keep-alive;
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'websocket' upgrade;
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'' close;
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}
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server {
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listen 80;
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listen [::]:80;
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listen 443 ssl http2;
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listen [::]:443 ssl http2;
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server_name <YOUR_SERVER_NAME>;
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ssl_certificate <PATH_TO_CERT>;
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ssl_certificate_key <PATH_CERT_KEY>;
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ssl_protocols TLSv1.2 TLSv1.3;
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location / {
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proxy_pass http://<IP:PORT>;
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection $connection_upgrade;
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proxy_set_header Host $server_name;
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proxy_redirect http:// https://;
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proxy_buffering off;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
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add_header Strict-Transport-Security "max-age=15552000; includeSubDomains" always;
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}
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}
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```
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## istio/envoy
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If you using [Istio](https://istio.io/) ingressgateway or [Envoy](https://www.envoyproxy.io/) as reverse proxy, there are some tips for you. If not set, you may see some debug log in proxy as below:
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```log
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Sending local reply with details upgrade_failed
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```
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### Envoy
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You need add a new upgrade_type named `tailscale-control-protocol`. [see detail](https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/filters/network/http_connection_manager/v3/http_connection_manager.proto#extensions-filters-network-http-connection-manager-v3-httpconnectionmanager-upgradeconfig)
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### Istio
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Same as envoy, we can use `EnvoyFilter` to add upgrade_type.
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```yaml
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apiVersion: networking.istio.io/v1alpha3
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kind: EnvoyFilter
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metadata:
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name: headscale-behind-istio-ingress
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namespace: istio-system
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spec:
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configPatches:
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- applyTo: NETWORK_FILTER
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match:
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listener:
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filterChain:
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filter:
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name: envoy.filters.network.http_connection_manager
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patch:
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operation: MERGE
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value:
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typed_config:
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"@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
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upgrade_configs:
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- upgrade_type: tailscale-control-protocol
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```
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