Use DHCP across the board

hosts/isaiah/default.nix

@@ -37,6 +37,7 @@
     kubernetes = {
       enable = true;
       vipInterface = "enp38s0";
+      vip = "10.42.1.6";
       priority = 255;
     };
     tailscale = {
@@ -59,27 +60,13 @@
   };
 
   networking = {
-    defaultGateway = {
-      address = " 10.42.1.1";
-      interface = "enp38s0";
-    };
     firewall = {
       enable = true;
       allowedTCPPorts = [ 80 ];
       checkReversePath = lib.mkForce false;
     };
     hostName = "isaiah";
-    interfaces = {
-      enp38s0 = {
-        ipv4.addresses = [
-          {
-            address = "10.42.1.6";
-            prefixLength = 16;
-          }
-        ];
-      };
-    };
-    nameservers = [ "10.42.1.5" ];
+    interfaces.enp38s0.useDHCP = true;
     useDHCP = false;
   };
 

hosts/jeremiah/default.nix

@@ -22,7 +22,8 @@
     initrd.kernelModules = [
       "amdgpu"
     ];
-    kernelParams = [
+    kernelParams =
+      [
       ];
     loader = {
       systemd-boot.enable = true;
@@ -73,6 +74,7 @@
     kubernetes = {
       enable = true;
       vipInterface = "br0";
+      vip = "10.42.1.8";
       priority = 254;
     };
     tailscale = {
@@ -103,17 +105,7 @@
       interface = "br0";
     };
     firewall.allowedTCPPorts = [ 3389 ];
-    interfaces = {
-      br0 = {
-        ipv4.addresses = [
-          {
-            address = "10.42.1.8";
-            prefixLength = 16;
-          }
-        ];
-      };
-    };
-    nameservers = [ "10.42.1.5" ];
+    interfaces.br0.useDHCP = true;
   };
 
   programs.steam = {

hosts/zeke/default.nix

@@ -53,35 +53,14 @@
     networkmanager.enable = lib.mkForce true;
     enableIPv6 = false;
     useDHCP = false;
-    interfaces = {
-      # This seems to be direct mother board interface
-      enp12s0.useDHCP = true;
-      enp12s0.ipv4.addresses = [
-        {
-          address = "10.42.1.13";
-          prefixLength = 16;
-        }
-      ];
-    };
-    defaultGateway = {
-      address = "10.42.1.1";
-      interface = "enp12s0";
-    };
-    nameservers = [
-      "10.42.1.5"
-      "10.42.1.1"
-    ];
+    interfaces.enp12s0.useDHCP = true;
   };
 
   # Let's do a sound thing
   services = {
     k3s = {
-      extraFlags =
-        let
-          ip = (builtins.head config.networking.interfaces.enp12s0.ipv4.addresses).address;
-        in
-        [
-          "--tls-san ${ip}"
+      extraFlags = [
+        "--tls-san 10.42.1.13"
         #"--bind-address ${ip}"
       ];
     };

modules/nixos/kubernetes.nix

@@ -29,6 +29,11 @@ in
         default = 1;
         description = "VIP priority";
       };
+      vip = lib.mkOption {
+        type = lib.types.str;
+        default = null;
+        description = "The IP address of this host";
+      };
       vipInterface = lib.mkOption {
         type = lib.types.str;
         default = null;
@@ -56,12 +61,12 @@ in
     ];
 
     networking.firewall = {
-      allowedTCPPorts = [
+      allowedTCPPorts =
+        [
           80
           443
           5432
           6443
-        10250
         ]
         ++ (
           if cfg.agentOnly then
@@ -137,11 +142,7 @@ in
         serverAddr = lib.mkIf (config.networking.hostName != "isaiah") "https://isaiah.home:6443";
         tokenFile = config.age.secrets.kubernetesToken.path;
       };
-      keepalived =
-        let
-          ip = (builtins.head config.networking.interfaces."${cfg.vipInterface}".ipv4.addresses).address;
-        in
-        {
+      keepalived = {
         enable = true;
         openFirewall = true;
         vrrpInstances.kubernetes = {
@@ -155,12 +156,6 @@ in
             }
           ];
           virtualRouterId = 77;
-            unicastPeers = lib.filter (v: v != ip) [
-              "10.42.1.6"
-              "10.42.1.8"
-              "10.42.1.13"
-            ];
-            unicastSrcIp = ip;
           extraConfig = ''
             advert_int 1
           '';