diff --git a/hosts/cap-clust-01/configuration.nix b/hosts/cap-clust-01/configuration.nix
index 628d33b..9148a2e 100644
--- a/hosts/cap-clust-01/configuration.nix
+++ b/hosts/cap-clust-01/configuration.nix
@@ -6,6 +6,9 @@
 
     # Host Groups
     ../../modules/host-groups/cluster.nix
+
+    # Application Groups
+    ../../modules/application-groups/k3s-primary.nix
   ];
 
   networking.hostName = "cap-clust-01";
diff --git a/hosts/cap-clust-02/configuration.nix b/hosts/cap-clust-02/configuration.nix
index 6b30a45..502faee 100644
--- a/hosts/cap-clust-02/configuration.nix
+++ b/hosts/cap-clust-02/configuration.nix
@@ -6,6 +6,9 @@
 
     # Host Groups
     ../../modules/host-groups/cluster.nix
+
+    # Application Groups
+    ../../modules/application-groups/k3s-secondary.nix
   ];
 
   networking.hostName = "cap-clust-02";
diff --git a/hosts/cap-clust-03/configuration.nix b/hosts/cap-clust-03/configuration.nix
index 837686d..73c05d3 100644
--- a/hosts/cap-clust-03/configuration.nix
+++ b/hosts/cap-clust-03/configuration.nix
@@ -6,6 +6,9 @@
 
     # Host Groups
     ../../modules/host-groups/cluster.nix
+
+    # Application Groups
+    ../../modules/application-groups/k3s-primary.nix
   ];
 
   networking.hostName = "cap-clust-03";
diff --git a/modules/application-groups/k3s-primary.nix b/modules/application-groups/k3s-primary.nix
new file mode 100644
index 0000000..eb38d46
--- /dev/null
+++ b/modules/application-groups/k3s-primary.nix
@@ -0,0 +1,9 @@
+{ config, pkgs, ... }:
+{
+  services.k3s = {
+    enable = true;
+    role = "server";
+    token = "forinitialtestingonly";
+    clusterInit = true;
+  };
+}
diff --git a/modules/application-groups/k3s-secondary.nix b/modules/application-groups/k3s-secondary.nix
new file mode 100644
index 0000000..89f2b72
--- /dev/null
+++ b/modules/application-groups/k3s-secondary.nix
@@ -0,0 +1,9 @@
+{ config, pkgs, ... }:
+{
+  services.k3s = {
+    enable = true;
+    role = "server"; # Or "agent" for worker only nodes
+    token = "forinitialtestingonly";
+    serverAddr = "https://cap-clust-01:6443";
+  };
+}
diff --git a/modules/application-groups/system-utilities.nix b/modules/application-groups/system-utilities.nix
index 806474c..4db16ab 100644
--- a/modules/application-groups/system-utilities.nix
+++ b/modules/application-groups/system-utilities.nix
@@ -32,6 +32,7 @@
     imagemagick
     iotop
     jq
+    k3s
     kdePackages.qt6ct
     killall
     kitty