Merge branch '207.reuse-vpn-server-ip-configuration' into...

Merge branch '207.reuse-vpn-server-ip-configuration' into '207.payment-server-exception-reporting-update'

Read the VPN server IP address from the monitoring node config

See merge request !257

morph/lib/base.nix

 # This module contains settings and configuration that apply to all nodes in a grid.
-{ lib, config, ...}:
+{ lib, config, nodes, ...}:
 {
   options.grid = {
     publicKeyPath = lib.mkOption {
@@ -59,7 +59,9 @@
 
     networking.hosts = {
       # To stream logs to the monitoring host, all nodes need to know its address
-      "172.23.23.1" = [ "monitoring" "monitoring.monitoringvpn" ];
+      ${nodes.monitoring.config.services.private-storage.monitoring.vpn.server.ip} = [
+        "monitoring" "monitoring.monitoringvpn"
+      ];
     };
 
     services.private-storage.monitoring.exporters.promtail.enable = true;