K8s/Storage

Storage » Mount

cat <<'INI'| sudo tee /etc/systemd/system/minikube.service >/dev/null
[Unit]
Description=Minikube Cluster
Documentation=https://minikube.sigs.k8s.io/docs/
After=network-online.target containerd.service docker.service
Requires=network-online.target containerd.service docker.service
Wants=network-online.target docker.service
AssertFileIsExecutable=/var/minikube/bin/minikube

[Service]
Type=forking
User=minikube
Group=minikube
RemainAfterExit=yes
ProtectProc=invisible
StandardOutput=journal
WorkingDirectory=/var/minikube

EnvironmentFile=-/etc/default/minikube 
ExecStartPre=/bin/bash -c "if [ -z \"${MINIKUBE_OPTS}\" ]; then echo \"Variable MINIKUBE_OPTS not set in /etc/default/minikube\"; errors_exit; fi"
ExecStart=/var/minikube/bin/minikube start --cpus=12 --memory=27849 --addons=ingress,ingress-dns,dashboard,metrics-server --mount=true --mount-string=/var/minikube/pvc/standard/:/var/hostpath-provisioner/ --mount-string=/var/minikube/pvc/hostpath/:/var/hostpath_pv/ --apiserver-ips=10.20.40.3
ExecStop=/var/minikube/bin/minikube stop

Restart=always
SendSIGKILL=no
TasksMax=infinity
TimeoutStopSec=infinity

[Install]
WantedBy=multi-user.target
INI

Storage » Class » Hostpath

cat <<'YML'| kubectl apply -f -
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: hostpath
provisioner: k8s.io/minikube-hostpath
reclaimPolicy: Retain
volumeBindingMode: Immediate
YML

Storage » Persistent Volume

cat <<'YML'| kubectl apply -f - --- apiVersion: v1 kind: PersistentVolume metadata: name: mariadb-data-mariadb-0 spec: capacity: storage: 10Gi accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Retain storageClassName: hostpath hostPath: path: /var/hostpath_pv/mariadb/data-mariadb-0 type: DirectoryOrCreate YML kubectl config get-contexts kubectl get ns |grep mariadb kubectl create namespace mariadb cat << YML | kubectl apply -f - --- apiVersion: v1 kind: PersistentVolumeClaim metadata: labels: app.kubernetes.io/name: mariadb name: data-mariadb-0 namespace: mariadb spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi storageClassName: hostpath volumeName: mariadb-data-mariadb-0 YML

cat <<'YML'| kubectl apply -f - --- apiVersion: v1 kind: PersistentVolume metadata: name: postgresql-data-postgresql-0 spec: capacity: storage: 10Gi accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Retain storageClassName: hostpath hostPath: path: /var/hostpath_pv/postgresql/data-postgresql-0 type: DirectoryOrCreate YML kubectl config get-contexts kubectl get ns |grep postgresql kubectl create namespace postgresql cat << YML | kubectl apply -f - --- apiVersion: v1 kind: PersistentVolumeClaim metadata: labels: app.kubernetes.io/name: postgresql name: data-postgresql-0 namespace: postgresql spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi storageClassName: hostpath volumeName: postgresql-data-postgresql-0 YML

Playground

kubectl -n mariadb delete pvc --all	kubectl -n postgresql delete pvc --all	kubectl delete sc hostpath
kubectl -n mariadb delete pvc data-mariadb-0 kubectl delete pv mariadb-data-mariadb-0	kubectl -n postgresql delete pvc data-postgresql-0 kubectl delete pv postgresql-data-postgresql-0

References

K8s » CSI Hostpath Driver K8s » Swiss Knife K8s » Ingress K8s » Service K8s » Run
Helm » GitLab » External Helm » PostgreSQL Helm » MariaDB Helm » GitLab Helm » Redis
Linux Containers Kubernetes Multipass Minikube Podman Vagrant Docker Qemu K9s K8s	Minikube » Ingress » DNS Minikube » Systemd Minikube » Registry Minikube » Tunnel Kubectl Ansible CIDR Helm UFW