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Diffstat (limited to 'docs/ACME.md')
| -rw-r--r-- | docs/ACME.md | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/docs/ACME.md b/docs/ACME.md index 15752ad9c9..8fb2bd66a9 100644 --- a/docs/ACME.md +++ b/docs/ACME.md @@ -39,13 +39,23 @@ placed in Synapse's config directory without the need for any ACME setup. ## ACME setup +The main steps for enabling ACME support in short summary are: + +1. Allow Synapse to listen on port 80 with authbind, or forward it from a reverse-proxy. +1. Set `acme:enabled` to `true` in homeserver.yaml. +1. Move your old certificates (files `example.com.tls.crt` and `example.com.tls.key` out of the way if they currently exist at the paths specified in `homeserver.yaml`. +1. Restart Synapse + +Detailed instructions for each step are provided below. + +### Listening on port 80 In order for Synapse to complete the ACME challenge to provision a certificate, it needs access to port 80. Typically listening on port 80 is only granted to applications running as root. There are thus two solutions to this problem. -### Using a reverse proxy +#### Using a reverse proxy A reverse proxy such as Apache or nginx allows a single process (the web server) to listen on port 80 and proxy traffic to the appropriate program @@ -70,7 +80,7 @@ ProxyPass /.well-known/acme-challenge http://localhost:8009/.well-known/acme-cha Make sure to restart/reload your webserver after making changes. -### Authbind +#### Authbind `authbind` allows a program which does not run as root to bind to low-numbered ports in a controlled way. The setup is simpler, but requires a @@ -98,9 +108,9 @@ When Synapse is started, use the following syntax:: authbind --deep <synapse start command> ``` -## Config file editing +### Config file editing -Finally, once Synapse is able to listen on port 80 for ACME challenge +Once Synapse is able to listen on port 80 for ACME challenge requests, it must be told to perform ACME provisioning by setting `enabled` to true under the `acme` section in `homeserver.yaml`: @@ -108,3 +118,9 @@ to true under the `acme` section in `homeserver.yaml`: acme: enabled: true ``` + +### Starting synapse + +Ensure that the certificate paths specified in `homeserver.yaml` (`tls_certificate_path` and `tls_private_key_path`) do not currently point to any files. Synapse will not provision certificates if files exist, as it does not want to overwrite existing certificates. + +Finally, start/restart Synapse. \ No newline at end of file |