Add support for metallb installation

Metallb_Setup/address-pool.gomplate.yaml

@@ -5,5 +5,4 @@ metadata:
   namespace: metallb-system
 spec:
   addresses:
-#  - 192.168.178.220-192.168.178.225 #pve-82
-  - 192.168.178.160-192.168.178.180 #pve-83
+  - {{ .Env.METALLB_ADDRESS_RANGE }}

Metallb_Setup/justfile

@@ -0,0 +1,47 @@
+set fallback := true
+
+export K8S_CONTEXT := env("K8S_CONTEXT", "")
+export SERVER_IP := env("K3S_SERVER_IP","192.168.178.45")
+export USER := env("K3S_USER","basti")
+
+
+[private]
+default:
+    @just --list --unsorted --list-submodules
+
+
+install:
+    #!/bin/bash
+    set -euo pipefail
+    just env::check
+
+    METALLB_VERSION="v0.15.3"
+
+    username=$(gum input --prompt="SSH username: " --value="${USER}" --width=100)
+    context=""
+    if gum confirm "Update KUBECONFIG?"; then
+        context=$(
+            gum input --prompt="Context name: " --value="${K8S_CONTEXT}" --width=100
+        )
+    fi
+
+    if [ -n "${context}" ]; then
+        kubectl config use-context "${context}"
+    fi
+
+    kubectl apply -f "https://raw.githubusercontent.com/metallb/metallb/${METALLB_VERSION}/config/manifests/metallb-native.yaml"
+    gum spin --spinner dot --title "Waiting for MetalLB to be ready..." -- kubectl wait --namespace metallb-system --for=condition=available deployment --all --timeout=120s
+    echo "MetalLB ${METALLB_VERSION} installed successfully."
+
+    gomplate -f address-pool.gomplate.yaml | kubectl apply -f -
+    echo "Address pool configured."
+
+    kubectl apply -f advertisement.yaml
+    echo "Advertisement created."
+
+uninstall:
+    #!/bin/bash
+    set -euo pipefail
+    just env::check
+
+    kubectl get namespace metallb-system &>/dev/null && kubectl delete ns metallb-system