# Déploiement d'une solution de stockage Il peut y avoir plusieurs solutions de stockage utilisées par un même cluster. # LongHorn #### Déployer une solution de stockage **Installation des prérequits sur TOUS LES NOEUDS :** ```bash sudo apt-get update sudo apt-get install -y open-iscsi nfs-common sudo systemctl enable --now iscsid ``` **Installation de Helm sur le master 1 :** ```bash curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 bash get_helm.sh ``` **Préparation et déploiement de Longhorn :** ```bash helm repo add longhorn https://charts.longhorn.io helm repo update ``` **Dans le fichier : /root/longhorn-values.yaml :** ```yaml defaultSettings: defaultDataPath: "/opt/longhorn" ``` **Déploiement de longhorn :** ```bash helm install longhorn longhorn/longhorn \ --namespace longhorn-system \ --create-namespace \ -f /root/longhorn-values.yaml ``` Résultat : ```bash LAST DEPLOYED: Wed Apr 15 22:49:57 2026 NAMESPACE: longhorn-system STATUS: deployed REVISION: 1 TEST SUITE: None NOTES: Longhorn is now installed on the cluster! Please wait a few minutes for other Longhorn components such as CSI deployments, Engine Images, and Instance Managers to be initialized. Visit our documentation at https://longhorn.io/docs/ ``` **Vérifications :** ```bash kubectl get pods -n longhorn-system ``` ```bash NAME READY STATUS RESTARTS AGE csi-attacher-5bcb65bf95-44fv7 1/1 Running 1 (66s ago) 2m27s csi-attacher-5bcb65bf95-jvqxj 1/1 Running 0 2m27s csi-attacher-5bcb65bf95-pgf8h 1/1 Running 0 2m27s csi-provisioner-5d498c6944-d65sl 1/1 Running 0 2m27s csi-provisioner-5d498c6944-dfl96 1/1 Running 0 2m27s csi-provisioner-5d498c6944-wvmvs 1/1 Running 0 2m27s csi-resizer-6c6474c996-9k94v 1/1 Running 0 2m26s csi-resizer-6c6474c996-mjtsj 1/1 Running 0 2m27s csi-resizer-6c6474c996-t94bs 1/1 Running 0 2m26s csi-snapshotter-5cc5fb45d9-pxz5r 1/1 Running 0 2m26s csi-snapshotter-5cc5fb45d9-swr6x 1/1 Running 0 2m26s csi-snapshotter-5cc5fb45d9-wsdh6 1/1 Running 0 2m26s engine-image-ei-75a03ec3-8r6p4 1/1 Running 0 3m23s engine-image-ei-75a03ec3-nmbdp 1/1 Running 0 3m23s engine-image-ei-75a03ec3-tl4x2 1/1 Running 0 3m23s engine-image-ei-75a03ec3-vcq2q 1/1 Running 0 3m23s instance-manager-8904e58b7c0d881b70d813ddd4fe86f4 1/1 Running 0 2m54s instance-manager-9176dd8e42515fe6146f445c7a1bc3ad 1/1 Running 0 2m53s instance-manager-9805597396c5db2820496e3f125bc6bc 1/1 Running 0 2m53s instance-manager-eaeed3ca06747e29c0f3aa8b9557c5c8 1/1 Running 0 2m53s longhorn-csi-plugin-7vtx8 3/3 Running 0 2m26s longhorn-csi-plugin-brx6d 3/3 Running 0 2m26s longhorn-csi-plugin-d4fxc 3/3 Running 0 2m26s longhorn-csi-plugin-tsrrg 3/3 Running 0 2m26s longhorn-driver-deployer-746f54969f-9gmlb 1/1 Running 0 4m5s longhorn-manager-b7q7k 2/2 Running 0 4m5s longhorn-manager-fk6f4 2/2 Running 0 4m5s longhorn-manager-xghbf 2/2 Running 0 4m5s longhorn-manager-xt4xq 2/2 Running 0 4m5s longhorn-ui-5df99fc477-7zt5s 1/1 Running 0 4m5s longhorn-ui-5df99fc477-tzwdp 1/1 Running 0 4m5s ``` **Accéder à l'interface graphique :** ```bash kubectl patch svc longhorn-frontend -n longhorn-system -p '{"spec": {"type": "NodePort"}}' ``` Afficher le port : ```bash kubectl get svc longhorn-frontend -n longhorn-system ``` **On va utiliser le port :** ```bash NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE longhorn-frontend NodePort 10.102.85.80 80:32555/TCP 6m22s ``` Exemple ici : http://192.168.1.104:32555/#/dashboard

On peut utiliser n'importe quelle IP du cluster.

[![image.png](https://docs.nehemiebarkia.fr/uploads/images/gallery/2026-04/scaled-1680-/IGbimage.png)](https://docs.nehemiebarkia.fr/uploads/images/gallery/2026-04/IGbimage.png) ##### Tester le stockage (pour aller plus loin) : **Déclaration du PVC :** ```bash hello-pvc.yaml ``` ```yaml apiVersion: v1 kind: PersistentVolumeClaim metadata: name: longhorn-hello-pvc spec: accessModes: - ReadWriteOnce storageClassName: longhorn # On utilise le driver Longhorn resources: requests: storage: 1Gi # 1 Go c'est largement assez pour un test ``` **Création d'un conteneur utilisant le PVC : ** ``` hello-app.yaml ``` ```yaml apiVersion: v1 kind: Pod metadata: name: hello-longhorn spec: containers: - name: hello-world image: busybox # On écrit la date dans /data/coucou.txt en boucle command: ["sh", "-c", "while true; do date >> /data/coucou.txt; echo 'Donnée écrite !'; sleep 5; done"] volumeMounts: - name: storage-volume mountPath: /data volumes: - name: storage-volume persistentVolumeClaim: claimName: longhorn-hello-pvc ``` **Application des changements :** ```bash kubectl apply -f hello-pvc.yaml kubectl apply -f hello-app.yaml ``` **Côté interface graphique :** [![image.png](https://docs.nehemiebarkia.fr/uploads/images/gallery/2026-04/scaled-1680-/jL1image.png)](https://docs.nehemiebarkia.fr/uploads/images/gallery/2026-04/jL1image.png) **Suppression du pod :** ```bash kubectl delete pod hello-longhorn ``` **Suppression du pvc :** ``` kubectl delete pvc longhorn-hello-pvc ```