Make the wiki publicly accessible and configure nginxs to give it https

inventories/z9/host_vars/public-reverse-proxy.yaml

@@ -3,3 +3,6 @@ nginx__deploy_redirect_conf: false
 nginx__configurations:
   - name: acme_challenge
     content: "{{ lookup('ansible.builtin.file', 'configs/public-reverse-proxy/nginx/acme_challenge.conf') }}"
+nginx__use_custom_nginx_conf: true
+nginx__custom_nginx_conf: |
+  {{ lookup('file', 'configs/public-reverse-proxy/nginx/nginx.conf') }}

inventories/z9/host_vars/wiki.yml

@@ -1,5 +1,7 @@
 nginx__version_spec: ""
 nginx__deploy_redirect_conf: false
 nginx__configurations:
+  - name: http_handler
+    content: "{{ lookup('ansible.builtin.file', 'configs/wiki/nginx/http_handler.conf') }}"
   - name: wiki.ccchh.net
     content: "{{ lookup('ansible.builtin.file', 'configs/wiki/nginx/wiki.ccchh.net.conf') }}"

playbooks/files/configs/public-reverse-proxy/nginx/acme_challenge.conf

@@ -6,6 +6,7 @@ map $host $upstream_acme_challenge_host {
     thinkcccore1.ccchh.net 10.31.242.4;
     thinkcccore2.ccchh.net 10.31.242.5;
     thinkcccore3.ccchh.net 10.31.242.6;
+    wiki.ccchh.net 10.31.206.13;
     default "";
 }
 
@@ -20,10 +21,26 @@ server {
         # This is http in any case.
         proxy_set_header X-Forwarded-Proto http;
     }
+
+    # Better safe than sorry.
+    # Don't do a permanent redirect to avoid acme challenge pain (even tho 443
+    # still should work).
+    location / {
+        return 307 https://$host$request_uri;
+    }
 }
 
 server {
-    listen 443 ssl http2 default_server;
+    # Listen on a custom port for the proxy protocol.
+    listen 8443 ssl http2 proxy_protocol;
+    # Make use of the ngx_http_realip_module to set the $remote_addr and
+    # $remote_port to the client address and client port, when using proxy
+    # protocol.
+    # First set our proxy protocol proxy as trusted.
+    set_real_ip_from 127.0.0.1;
+    # Then tell the realip_module to get the addreses from the proxy protocol
+    # header.
+    real_ip_header proxy_protocol;
 
     # ssl_certificate /path/to/signed_cert_plus_intermediates;
     # ssl_certificate_key /path/to/private_key;

playbooks/files/configs/public-reverse-proxy/nginx/nginx.conf

@@ -0,0 +1,50 @@
+# This config is based on the standard `nginx.conf` shipping with the stable
+# nginx package from the NGINX mirrors as of 2023-01.
+
+user  nginx;
+worker_processes  auto;
+
+error_log  /var/log/nginx/error.log notice;
+pid        /var/run/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+# Listen on port 443 as a reverse proxy and use PROXY Protocol for the
+# upstreams.
+stream {
+    map $ssl_preread_server_name $address {
+        wiki.ccchh.net 10.31.206.13:8443;
+        default 127.0.0.1:8443;
+    }
+
+    server {
+        listen 0.0.0.0:443;
+        proxy_pass $address;
+        ssl_preread on;
+        proxy_protocol on;
+    }
+}
+
+# Still have the default http block, so the `acme_challenge.conf` works.
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    sendfile        on;
+    #tcp_nopush     on;
+
+    keepalive_timeout  65;
+
+    #gzip  on;
+
+    include /etc/nginx/conf.d/*.conf;
+}

playbooks/files/configs/wiki/nginx/http_handler.conf

@@ -0,0 +1,14 @@
+server {
+    listen 80 default_server;
+    #listen [::]:80 default_server;
+    server_name _;
+
+    location /.well-known/acme-challenge/ {
+        autoindex on;
+        root /webroot-for-acme-challenge;
+    }
+
+    location / {
+        return 301 https://$host$request_uri;
+    }
+}

playbooks/files/configs/wiki/nginx/wiki.ccchh.net.conf

@@ -1,14 +1,37 @@
 # partly generated 2022-01-08, Mozilla Guideline v5.6, nginx 1.17.7, OpenSSL 1.1.1k, intermediate configuration
 # https://ssl-config.mozilla.org/#server=nginx&version=1.17.7&config=intermediate&openssl=1.1.1k&guideline=5.6
 server {
-    listen [::]:80 ipv6only=off;
+    # Listen on a custom port for the proxy protocol.
+    listen 8443 ssl http2 proxy_protocol;
+    # Make use of the ngx_http_realip_module to set the $remote_addr and
+    # $remote_port to the client address and client port, when using proxy
+    # protocol.
+    # First set our proxy protocol proxy as trusted.
+    set_real_ip_from 10.31.206.11;
+    # Then tell the realip_module to get the addreses from the proxy protocol
+    # header.
+    real_ip_header proxy_protocol;
 
-    server_name wiki.z9.ccchh.net;
+    server_name wiki.ccchh.net;
+
+    ssl_certificate /etc/letsencrypt/live/wiki.ccchh.net/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/wiki.ccchh.net/privkey.pem;
+    # verify chain of trust of OCSP response using Root CA and Intermediate certs
+    ssl_trusted_certificate /etc/letsencrypt/live/wiki.ccchh.net/chain.pem;
+
+    # HSTS (ngx_http_headers_module is required) (63072000 seconds)
+    add_header Strict-Transport-Security "max-age=63072000" always;
 
     # Maximum file upload size is 4MB - change accordingly if needed
     client_max_body_size 4M;
     client_body_buffer_size 128k;
 
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    # This is https in any case.
+    proxy_set_header X-Forwarded-Proto https;
+
     root /var/www/dokuwiki;
     index doku.php;