fix(k8s): rebalance k3s-test-1 VMs after the youko/shushou swap

hosts/12kingdoms-shushou/microvm.nix

@@ -24,20 +24,6 @@
     config.imports = [ ../k8s/k3s-test-1-master-3 ];
   };
 
-  microvm.vms.k3s-test-1-worker-2 = {
-    autostart = true;
-    restartIfChanged = true;
-    specialArgs = {
-      inherit
-        myvars
-        mylib
-        agenix
-        mysecrets
-        ;
-    };
-    config.imports = [ ../k8s/k3s-test-1-worker-2 ];
-  };
-
   microvm.vms.k3s-test-1-worker-3 = {
     autostart = true;
     restartIfChanged = true;
@@ -54,8 +40,7 @@
 
   # Attach the guest's tap to the VM bridge, the same way the physical NIC is
   # attached. The tap name is derived from the guest IP (192.168.5.116 -> vm116,
-  # 192.168.5.112 -> vm112, 192.168.5.113 -> vm113), as IFNAMSIZ caps interface
-  # names at 15 characters.
+  # 192.168.5.113 -> vm113), as IFNAMSIZ caps interface names at 15 characters.
   systemd.network.networks."20-vm116" = {
     matchConfig.Name = [ "vm116" ];
     networkConfig = {
@@ -64,14 +49,6 @@
     };
     linkConfig.RequiredForOnline = "no";
   };
-  systemd.network.networks."20-vm112" = {
-    matchConfig.Name = [ "vm112" ];
-    networkConfig = {
-      LinkLocalAddressing = "no";
-      Bridge = "br0";
-    };
-    linkConfig.RequiredForOnline = "no";
-  };
   systemd.network.networks."20-vm113" = {
     matchConfig.Name = [ "vm113" ];
     networkConfig = {

hosts/12kingdoms-youko/microvm.nix

@@ -24,8 +24,25 @@
     config.imports = [ ../k8s/k3s-test-1-master-2 ];
   };
 
+  # Moved here from shushou after the SSD swap: the 5625U there is weaker and has
+  # only 22 GiB, too little for this 16 GiB worker.
+  microvm.vms.k3s-test-1-worker-2 = {
+    autostart = true;
+    restartIfChanged = true;
+    specialArgs = {
+      inherit
+        myvars
+        mylib
+        agenix
+        mysecrets
+        ;
+    };
+    config.imports = [ ../k8s/k3s-test-1-worker-2 ];
+  };
+
   # Attach the guest's tap to the VM bridge, the same way the physical NIC is
-  # attached. The tap name is derived from the guest IP (192.168.5.115 -> vm115).
+  # attached. The tap name is derived from the guest IP (192.168.5.115 -> vm115,
+  # 192.168.5.112 -> vm112), as IFNAMSIZ caps interface names at 15 characters.
   systemd.network.networks."20-vm115" = {
     matchConfig.Name = [ "vm115" ];
     networkConfig = {
@@ -34,4 +51,12 @@
     };
     linkConfig.RequiredForOnline = "no";
   };
+  systemd.network.networks."20-vm112" = {
+    matchConfig.Name = [ "vm112" ];
+    networkConfig = {
+      LinkLocalAddressing = "no";
+      Bridge = "br0";
+    };
+    linkConfig.RequiredForOnline = "no";
+  };
 }

hosts/README.md

@@ -54,8 +54,9 @@ disks.
 #### `k8s` - Kubernetes Infrastructure
 
 - **VM Cluster**: 3 physical mini PCs (shoryu, shushou, youko) running all VMs
-- **K3s Testing**: `k3s-test-1-master-{1,2,3}` (control plane) + `k3s-test-1-worker-{1,2,3}`
-  (workloads; two on `shushou`, one on `shoryu`), running as microVMs
+- **K3s Testing**: `k3s-test-1-master-{1,2,3}` (control plane; one per host) +
+  `k3s-test-1-worker-{1,2,3}` (workloads; `worker-1` on `shoryu`, `worker-2` on `youko`, `worker-3`
+  on `shushou`), running as microVMs
 
 ### External Systems
 

hosts/k8s/k3s-test-1-master-3/default.nix

@@ -13,7 +13,7 @@ let
     inherit pkgs hostName;
     inherit (myvars) networking;
     vcpu = 2;
-    mem = 8192;
+    mem = 4096;
     varSize = 20480;
   };
   k3sModule = mylib.genK3sServerModule {