add proxy host for website

2026-02-24 16:27:18 +01:00 · 2026-02-24 16:27:18 +01:00 · ab4b1c3e70
commit ab4b1c3e70
parent 4f5f6a7c06
3 changed files with 220 additions and 0 deletions
--- a/hosts/proxy/default.nix
+++ b/hosts/proxy/default.nix
@ -0,0 +1,126 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  networking.hostName = "proxy";
+  networking.interfaces.ens18.ipv4.addresses = [
+    {
+      address = "141.56.51.1";
+      prefixLength = 24;
+    }
+  ];
+
+  networking.defaultGateway.address = "141.56.51.254";
+  networking.nameservers = [
+    "9.9.9.9"
+    "1.1.1.1"
+  ];
+  security.acme = {
+    certs."stura.htw-dresden.de" = {
+      listenHTTP = "127.0.0.1:8888";
+      postRun = ''
+        cat cert.pem key.pem > full.pem
+        chmod 640 full.pem
+        systemctl reload haproxy
+      '';
+    };
+  };
+
+# give haproxy access to the cert files
+users.users.haproxy.extraGroups = [ "acme" ];
+
+systemd.services.haproxy = {
+  after = [ "acme-finished-stura.htw-dresden.de.target" ];
+  wants = [ "acme-finished-stura.htw-dresden.de.target" ];
+};
+
+services = {
+    openssh.enable = true;
+    haproxy = {
+      enable = true;
+      config = ''
+        global
+          log /dev/log local0
+          maxconn 4096
+          # for ACME/Let's Encrypt cert + key in one file:
+          crt-base /var/lib/acme
+
+        defaults
+          log global
+          mode tcp
+          option tcplog
+          timeout connect 5s
+          timeout client  30s
+          timeout server  30s
+
+            # ---- HTTP (port 80) for ACME challenges ----
+        frontend http_in
+          bind *:80
+          mode http
+          option httplog
+
+          acl is_acme path_beg /.well-known/acme-challenge/
+          acl is_my_domain hdr(host) -i stura.htw-dresden.de
+          use_backend acme_backend if is_acme is_my_domain
+          # redirect everything else to HTTPS
+          redirect scheme https code 301 if !is_acme
+
+        backend acme_backend
+          mode http
+          server acme 127.0.0.1:8888 check
+
+
+        # ---- SNI routing (TCP, peek at handshake) ----
+        frontend sni_router
+          bind *:443
+          mode tcp
+          tcp-request inspect-delay 5s
+          tcp-request content accept if { req_ssl_hello_type 1 }
+
+          # terminated here
+          use_backend terminate_plone if { req_ssl_sni -i stura.htw-dresden.de }
+          # passed through to nginx on remote host
+          use_backend tls_passthrough if { req_ssl_sni -i pro.stura.htw-dresden.de }
+
+        backend terminate_plone
+          mode tcp
+          # loopback to the termination frontend below
+          server loopback 127.0.0.1:8443
+
+        backend tls_passthrough
+          mode tcp
+          server nginx_host 141.56.51.15:443 check
+
+        frontend https_terminated
+          bind 127.0.0.1:8443 ssl crt /var/lib/acme/stura.htw-dresden.de/full.pem
+          mode http
+
+          default_backend plone_backend
+
+        backend plone_backend
+          mode http
+          http-request set-header Host stura.htw-dresden.de
+          http-request replace-uri ^/(.*)$ /VirtualHostBase/https/stura.htw-dresden.de:443/Plone/VirtualHostRoot/\1
+          server plone 141.56.51.5:8080 check
+
+# proxy_pass "http://141.56.51.5:8080/VirtualHostBase/https/stura.htw-dresden.de:443/Plone/VirtualHostRoot/";
+      '';
+    };
+  };
+
+
+  networking.firewall.allowedTCPPorts = [
+    80
+    443
+  ];
+
+  system.stateVersion = "25.11";
+
+}