nextcloud: add logging

configs/workhorse/nextcloud.nix

@@ -1,7 +1,14 @@
-{ pkgs, ... }: {
+{ pkgs, ... }:
+let
+
+  hostAddress = "192.168.100.10";
+  containerAddress = "192.168.100.11";
+
+in {
 
-  # setup nextcloud in a container
   containers.nextcloud = {
+
+    # mount host folders
     bindMounts = {
       rootpassword = {
         hostPath = toString <secrets/nextcloud/root_password>;
@@ -37,16 +44,51 @@
       };
     };
 
+    # container network setup
+    # see also nating on host system.
     privateNetwork = true;
-    hostAddress = "192.168.100.10";
-    localAddress = "192.168.100.11";
+    hostAddress = hostAddress;
+    localAddress = containerAddress;
 
     autoStart = true;
 
-    config = { config, pkgs, ... }: {
+    config = { config, pkgs, lib, ... }: {
 
       imports = [ <modules> <krops-lib> ];
 
+      services.nginx = {
+
+        # Use recommended settings
+        recommendedGzipSettings = lib.mkDefault true;
+        recommendedOptimisation = lib.mkDefault true;
+        recommendedProxySettings = lib.mkDefault true;
+        recommendedTlsSettings = lib.mkDefault true;
+
+        # for graylog logging
+        commonHttpConfig = let
+          access_log_sink = "${hostAddress}:12304";
+          error_log_sink = "${hostAddress}:12305";
+        in ''
+          log_format graylog2_json escape=json '{ "timestamp": "$time_iso8601", '
+            '"facility": "nginx", '
+            '"remote_addr": "$remote_addr", '
+            '"body_bytes_sent": $body_bytes_sent, '
+            '"request_time": $request_time, '
+            '"response_status": $status, '
+            '"request": "$request", '
+            '"request_method": "$request_method", '
+            '"host": "$host",'
+            '"upstream_cache_status": "$upstream_cache_status",'
+            '"upstream_addr": "$upstream_addr",'
+            '"http_x_forwarded_for": "$http_x_forwarded_for",'
+            '"http_referrer": "$http_referer", '
+            '"http_user_agent": "$http_user_agent" }';
+
+          access_log syslog:server=${access_log_sink} graylog2_json;
+          error_log syslog:server=${error_log_sink};
+        '';
+      };
+
       # don't forget the database backup before doing this
       # https://docs.nextcloud.com/server/stable/admin_manual/maintenance/backup.html
       # https://docs.nextcloud.com/server/stable/admin_manual/maintenance/upgrade.html
@@ -113,7 +155,7 @@
         config = {
           adminpassFile = toString <secrets/nextcloud/root_password>;
           overwriteProtocol = "https";
-          trustedProxies = [ "195.201.134.247" "192.168.100.11" ];
+          trustedProxies = [ "195.201.134.247" hostAddress ];
           dbtype = "mysql";
           dbpassFile = toString config.krops.userKeys."nextcloud".target;
           dbport = 3306;
@@ -128,6 +170,10 @@
       };
 
       environment.systemPackages = [ pkgs.smbclient ];
+
+      # send log to host systems graylog (use tinc or wireguard if host is not graylog)
+      services.SystemdJournal2Gelf.enable = true;
+      services.SystemdJournal2Gelf.graylogServer = "${hostAddress}:11201";
     };
   };
 
@@ -139,6 +185,12 @@
   # don't let networkmanager manger container network
   networking.networkmanager.unmanaged = [ "interface-name:ve-*" ];
 
+  # open ports for logging
+  networking.firewall.interfaces."ve-nextcloud".allowedTCPPorts =
+    [ 11201 12304 12305 ];
+  networking.firewall.interfaces."ve-nextcloud".allowedUDPPorts =
+    [ 11201 12304 12305 ];
+
   # host nginx setup
   services.nginx = {
     enable = true;
@@ -150,7 +202,7 @@
           # "nextcloud.gaykraft.com"
         ];
         locations."/" = {
-          proxyPass = "http://192.168.100.11";
+          proxyPass = "http://${containerAddress}";
           extraConfig = ''
             # allow big uploads
             # -----------------

system/all/nginx.nix

@@ -4,14 +4,15 @@ let
   error_log_sink = "workhorse.private:12305";
 in {
 
-  # for graylog logging
   services.nginx = {
+
     # Use recommended settings
     recommendedGzipSettings = lib.mkDefault true;
     recommendedOptimisation = lib.mkDefault true;
     recommendedProxySettings = lib.mkDefault true;
     recommendedTlsSettings = lib.mkDefault true;
 
+    # for graylog logging
     commonHttpConfig = ''
       log_format graylog2_json escape=json '{ "timestamp": "$time_iso8601", '
         '"facility": "nginx", '