nixos/kelder: Move nginx to separate container

nixos/boxes/kelder/containers/spoder/nginx.nix

@@ -0,0 +1,188 @@
+{ lib, pkgs, config, allAssignments, ... }:
+let
+  inherit (builtins) mapAttrs;
+  inherit (lib) mkMerge mkIf mkDefault;
+in
+{
+  config = {
+    my = {
+      secrets.files = {
+        "kelder/htpasswd" = {
+          owner = "nginx";
+          group = "nginx";
+        };
+        "dhparams.pem" = {
+          owner = "acme";
+          group = "acme";
+          mode = "440";
+        };
+      };
+
+      firewall = {
+        tcp.allowed = [ "http" "https" ];
+      };
+    };
+
+    services = {
+      nginx = {
+        package = pkgs.openresty;
+        enable = true;
+        enableReload = true;
+
+        logError = "stderr info";
+        recommendedTlsSettings = true;
+        clientMaxBodySize = "0";
+        serverTokens = true;
+        sslDhparam = config.age.secrets."dhparams.pem".path;
+
+        # Based on recommended*Settings, but probably better to be explicit about these
+        appendHttpConfig = ''
+          # NixOS provides a logrotate config that auto-compresses :)
+          log_format main
+            '$remote_addr - $remote_user [$time_local] $scheme "$host" "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent"';
+          access_log /var/log/nginx/access.log main;
+
+          # optimisation
+          sendfile on;
+          tcp_nopush on;
+          tcp_nodelay on;
+          keepalive_timeout 65;
+
+          # gzip
+          gzip on;
+          gzip_proxied any;
+          gzip_comp_level 5;
+          gzip_types
+            application/atom+xml
+            application/javascript
+            application/json
+            application/xml
+            application/xml+rss
+            image/svg+xml
+            text/css
+            text/javascript
+            text/plain
+            text/xml;
+          gzip_vary on;
+
+          # proxying
+          proxy_buffering off;
+          proxy_redirect off;
+          proxy_connect_timeout 60s;
+          proxy_read_timeout 60s;
+          proxy_send_timeout 60s;
+          proxy_http_version 1.1;
+
+          ${lib.my.nginx.proxyHeaders}
+
+          # caching
+          proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=CACHE:10m inactive=7d max_size=4g;
+
+          init_worker_by_lua_block {
+            local update_ip = function(premature)
+              if premature then
+                return
+              end
+
+              local hdl, err = io.popen("${pkgs.curl}/bin/curl -s https://v4.ident.me")
+              if not hdl then
+                ngx.log(ngx.ERR, "failed to run command: ", err)
+                return
+              end
+
+              local ip, err = hdl:read("*l")
+              hdl:close()
+              if not ip then
+                ngx.log(ngx.ERR, "failed to read ip: ", err)
+                return
+              end
+
+              pub_ip = ip
+              ngx.log(ngx.INFO, "ip is now: ", pub_ip)
+            end
+
+            local hdl, err = ngx.timer.every(5 * 60, update_ip)
+            if not hdl then
+              ngx.log(ngx.ERR, "failed to create timer: ", err)
+            end
+            update_ip()
+          }
+        '';
+
+        virtualHosts =
+        let
+          withAuth = c: mkMerge [
+            {
+              basicAuthFile = config.age.secrets."kelder/htpasswd".path;
+            }
+            c
+          ];
+          acquisition = "http://${allAssignments.kelder-acquisition.internal.ipv4.address}";
+          localRedirect = to: ''
+            rewrite_by_lua_block {
+              if ngx.var.remote_addr == pub_ip then
+                ngx.redirect(ngx.var.scheme .. "://${to}" .. ngx.var.request_uri, ngx.HTTP_MOVED_PERMANENTLY)
+              end
+            }
+          '';
+          hosts = {
+            "_" = {
+              default = true;
+              forceSSL = true;
+              onlySSL = false;
+              locations = {
+                "/".root = "${pkgs.nginx}/html";
+              };
+            };
+
+            "media.${lib.my.kelder.domain}" = {
+              extraConfig = localRedirect "media-local.${lib.my.kelder.domain}";
+              serverAliases = [ "media-local.${lib.my.kelder.domain}" ];
+              locations = {
+                "/".proxyPass = "${acquisition}:8096";
+                "= /".return = "302 $scheme://$host/web/";
+                "= /web/".proxyPass = "${acquisition}:8096/web/index.html";
+                "/socket" = {
+                  proxyPass = "${acquisition}:8096/socket";
+                  proxyWebsockets = true;
+                  extraConfig = lib.my.nginx.proxyHeaders;
+                };
+              };
+            };
+            "torrents.${lib.my.kelder.domain}" = withAuth {
+              locations."/".proxyPass = "${acquisition}:9091";
+            };
+            "jackett.${lib.my.kelder.domain}" = withAuth {
+              locations."/".proxyPass = "${acquisition}:9117";
+            };
+            "radarr.${lib.my.kelder.domain}" = withAuth {
+              locations."/" = {
+                proxyPass = "${acquisition}:7878";
+                proxyWebsockets = true;
+                extraConfig = lib.my.nginx.proxyHeaders;
+              };
+            };
+            "sonarr.${lib.my.kelder.domain}" = withAuth {
+              locations."/" = {
+                proxyPass = "${acquisition}:8989";
+                proxyWebsockets = true;
+                extraConfig = lib.my.nginx.proxyHeaders;
+              };
+            };
+          };
+
+          defaultsFor = mapAttrs (n: _: {
+            onlySSL = mkDefault true;
+            useACMEHost = mkDefault lib.my.kelder.domain;
+            kTLS = mkDefault true;
+            http2 = mkDefault true;
+          });
+        in
+        mkMerge [
+          hosts
+          (defaultsFor hosts)
+        ];
+      };
+    };
+  };
+}