Created
June 4, 2025 14:53
-
-
Save fedir/7cf98b365f87a86a4eb171e86269bd95 to your computer and use it in GitHub Desktop.
Simple Bash script to create a Kubeconfig file for kubectl for remote access to GKE from local PC // #GoogleCloud
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
set -e | |
# Vérification des arguments | |
if [ $# -ne 2 ]; then | |
echo "Usage: $0 <nom_utilisateur> <cluster_endpoint>" | |
echo "Exemple: $0 user01 https://11.22.33.44" | |
exit 1 | |
fi | |
USERNAME=$1 | |
CLUSTER_ENDPOINT=$2 | |
NAMESPACE=$USERNAME | |
SA_NAME=${USERNAME}-sa | |
SECRET_NAME=${SA_NAME}-token | |
KUBECONFIG_FILE=kubeconfig-${USERNAME}.yaml | |
echo "🔧 Création du namespace '$NAMESPACE'" | |
kubectl create namespace $NAMESPACE --dry-run=client -o yaml | kubectl apply -f - | |
echo "🔧 Création du ServiceAccount '$SA_NAME'" | |
kubectl create serviceaccount $SA_NAME -n $NAMESPACE --dry-run=client -o yaml | kubectl apply -f - | |
echo "🔐 Création manuelle du secret de token lié au ServiceAccount" | |
kubectl apply -f - <<EOF | |
apiVersion: v1 | |
kind: Secret | |
metadata: | |
name: ${SECRET_NAME} | |
annotations: | |
kubernetes.io/service-account.name: "${SA_NAME}" | |
namespace: ${NAMESPACE} | |
type: kubernetes.io/service-account-token | |
EOF | |
# Attendre que le token soit prêt (généré par le contrôleur) | |
echo "⏳ Attente de la création du token dans le secret..." | |
until kubectl get secret ${SECRET_NAME} -n ${NAMESPACE} -o jsonpath="{.data.token}" 2>/dev/null | grep -q .; do | |
echo " ⏳ En attente..." | |
sleep 2 | |
done | |
echo "🔧 Attribution des droits de lecture (RoleBinding)" | |
kubectl create rolebinding ${USERNAME}-rb \ | |
--role=view \ | |
--serviceaccount=${NAMESPACE}:${SA_NAME} \ | |
--namespace=${NAMESPACE} \ | |
--dry-run=client -o yaml | kubectl apply -f - | |
echo "🔐 Récupération du token du Secret" | |
USER_TOKEN=$(kubectl get secret $SECRET_NAME -n $NAMESPACE -o jsonpath="{.data.token}" | base64 --decode) | |
CLUSTER_NAME=$(kubectl config view --minify -o jsonpath="{.clusters[0].name}") | |
CA_CERT=$(kubectl get secret $SECRET_NAME -n $NAMESPACE -o jsonpath="{.data['ca\.crt']}" | base64 --decode) | |
echo "📝 Génération du fichier kubeconfig → ${KUBECONFIG_FILE}" | |
cat <<EOF > $KUBECONFIG_FILE | |
apiVersion: v1 | |
kind: Config | |
clusters: | |
- name: $CLUSTER_NAME | |
cluster: | |
server: $CLUSTER_ENDPOINT | |
certificate-authority-data: $(echo "$CA_CERT" | base64 | tr -d '\n') | |
contexts: | |
- name: $USERNAME-context | |
context: | |
cluster: $CLUSTER_NAME | |
namespace: $NAMESPACE | |
user: $USERNAME | |
current-context: $USERNAME-context | |
users: | |
- name: $USERNAME | |
user: | |
token: $USER_TOKEN | |
EOF | |
echo "✅ Fichier kubeconfig généré avec succès : $KUBECONFIG_FILE" | |
kubectl create rolebinding ${USERNAME}-admin-binding \ | |
--clusterrole=admin \ | |
--serviceaccount=${USERNAME}:${USERNAME}-sa \ | |
--namespace=${USERNAME} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment