Update docs for Fedora nginx setup

docs/docs/installation/fedora_based_en.md

@@ -135,23 +135,6 @@ If you want to open your newly installed instance to the world, you should run n
 sudo dnf install nginx
 ```
 
-* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
-
-```shell
-sudo dnf install certbot
-```
-
-and then set it up:
-
-```shell
-sudo mkdir -p /var/lib/letsencrypt/
-sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone
-```
-
-If that doesn’t work, make sure, that nginx is not already running. If it still doesn’t work, try setting up nginx first (change ssl “on” to “off” and try again).
-
----
-
 * Copy the example nginx configuration and activate it:
 
 ```shell
@@ -165,12 +148,23 @@ sudo cp /opt/akkoma/installation/nginx/akkoma.nginx /etc/nginx/conf.d/akkoma.con
 sudo systemctl enable --now nginx.service
 ```
 
-If you need to renew the certificate in the future, uncomment the relevant location block in the nginx config and run:
+* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
 
 ```shell
-sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --webroot -w /var/lib/letsencrypt/
+sudo dnf install certbot python3-certbot-nginx
 ```
 
+and then set it up:
+
+```shell
+sudo certbot --email <your@emailaddress> -d <yourdomain> -d <media_domain> --nginx
+```
+
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. A common source of problems are nginx config syntax errors; this can be checked for by running `nginx -t`.
+
+Certificate renewal should be handled automatically by Certbot from now on.
+
+
 #### Other webserver/proxies
 
 You can find example configurations for them in `/opt/akkoma/installation/`.

docs/docs/installation/otp_redhat_en.md

@@ -82,6 +82,7 @@ Other than things bundled in the OTP release Akkoma depends on:
 * PostgreSQL (also utilizes extensions in postgresql-contrib)
 * nginx (could be swapped with another reverse proxy but this guide covers only it)
 * certbot (for Let's Encrypt certificates, could be swapped with another ACME client, but this guide covers only it)
+    * If you are using certbot, also install the `python3-certbot-nginx` package for the nginx plugin
 * libmagic/file
 
 First, update your system, if not already done:
@@ -169,12 +170,6 @@ sudo -Hu akkoma ./bin/pleroma stop
 
 ### Setting up nginx and getting Let's Encrypt SSL certificaties
 
-#### Get a Let's Encrypt certificate
-
-```shell
-certbot certonly --standalone --preferred-challenges http -d yourinstance.tld
-```
-
 #### Copy Akkoma nginx configuration to the nginx folder
 
 ```shell
@@ -195,6 +190,12 @@ sudo nginx -t
 sudo systemctl start nginx
 ```
 
+#### Get a Let's Encrypt certificate
+
+```shell
+sudo certbot --email <your@emailaddress> -d <yourdomain> -d <media_domain> --nginx
+```
+
 At this point if you open your (sub)domain in a browser you should see a 502 error, that's because Akkoma is not started yet.
 
 
@@ -239,19 +240,11 @@ sudo nginx -t
 # Restart nginx
 sudo systemctl restart nginx
 
-# Ensure the webroot menthod and post hook is working
-sudo certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --dry-run --post-hook 'systemctl reload nginx'
-
-# Add it to the daily cron
-echo '#!/bin/sh
-certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --post-hook "systemctl reload nginx"
-' > /etc/cron.daily/renew-akkoma-cert
-sudo chmod +x /etc/cron.daily/renew-akkoma-cert
-
-# If everything worked the output should contain /etc/cron.daily/renew-akkoma-cert
-sudo run-parts --test /etc/cron.daily
+# Test that renewals work properly
+sudo certbot renew --cert-name yourinstance.tld --nginx --dry-run
 ```
 
+Assuming the commands were run successfully, certbot should be able to renew your certificates automatically via the `certbot-renew.timer` systemd unit.
 
 ## Create your first user and set as admin
 ```shell