Extract fallback version to constant at top of file

Co-authored-by: abdurriq <[email protected]>

Author: Copilot

src/kubectl-helm-minikube/install.sh

@@ -12,6 +12,9 @@ set -e
 # Clean up
 rm -rf /var/lib/apt/lists/*
 
+# Fallback version when stable.txt cannot be fetched (updated: 2026-02)
+KUBECTL_FALLBACK_VERSION="v1.28.0"
+
 KUBECTL_VERSION="${VERSION:-"latest"}"
 HELM_VERSION="${HELM:-"latest"}"
 MINIKUBE_VERSION="${MINIKUBE:-"latest"}" # latest is also valid
@@ -156,10 +159,8 @@ if [ ${KUBECTL_VERSION} != "none" ]; then
     if [ "${KUBECTL_VERSION}" = "latest" ] || [ "${KUBECTL_VERSION}" = "lts" ] || [ "${KUBECTL_VERSION}" = "current" ] || [ "${KUBECTL_VERSION}" = "stable" ]; then
         KUBECTL_VERSION="$(curl -fsSL --connect-timeout 10 --max-time 30 https://dl.k8s.io/release/stable.txt 2>/dev/null | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+' || echo "")"
         if [ -z "${KUBECTL_VERSION}" ]; then
-            # Fallback to a known stable version when stable.txt cannot be fetched
-            # Note: This version should be updated periodically to a recent stable release
-            echo "(!) Failed to fetch kubectl stable version. Using fallback version v1.28.0"
-            KUBECTL_VERSION="v1.28.0"
+            echo "(!) Failed to fetch kubectl stable version. Using fallback version ${KUBECTL_FALLBACK_VERSION}"
+            KUBECTL_VERSION="${KUBECTL_FALLBACK_VERSION}"
         fi
     else
         find_version_from_git_tags KUBECTL_VERSION https://github.com/kubernetes/kubernetes