Kubernetes Day -13 (Empty Directory, HostPath and LoadBalancer Labs)

Empty Directory, Hostpath and LoadBalancer Labs.
https://kubernetes.io/docs/concepts/storage/volumes/
EMPTY DIRECTORY
_______________
apiVersion: v1
kind: Pod
metadata:
name: empty-dir-example
spec:
containers:
- name: app
image: ubuntu
command: ["sleep", "3600"]
volumeMounts:
- mountPath: /tmp/cache
name: cache-volume
volumes:
- name: cache-volume
emptyDir: {}
------------
apiVersion: v1
kind: Pod
metadata:
name: emptydir-2gi-demo
spec:
containers:
- name: app
image: busybox
command: ["sleep", "3600"]
volumeMounts:
- mountPath: /cache
name: cache-volume
volumes:
- name: cache-volume
emptyDir:
sizeLimit: 2Gi
------------------
apiVersion: v1
kind: Pod
metadata:
name: emptydir-50mi-demo
spec:
containers:
- name: app
image: busybox
command: ["sleep", "3600"]
volumeMounts:
- mountPath: /scratch
name: scratch-volume
volumes:
- name: scratch-volume
emptyDir:
sizeLimit: 50Mi
____________________

HOSTPATH

apiVersion: v1
kind: Pod
metadata:
name: hostpath-demo
spec:
containers:
- name: busybox
image: busybox
command: ["sleep", "3600"]
volumeMounts:
- name: host-volume
mountPath: /data/host
volumes:
- name: host-volume
hostPath:
path: /mnt/data
type: DirectoryOrCreate

/home/docker/VOLUME
---------------------------------------------

apiVersion: apps/v1
kind: Deployment
metadata:
name: hostpath-demo
spec:
replicas: 1
selector:
matchLabels:
app: hostpath-demo
template:
metadata:
labels:
app: hostpath-demo
spec:
containers:
- name: demo-container
image: nginx
volumeMounts:
- name: host-volume
mountPath: /usr/share/nginx/html
volumes:
- name: host-volume
hostPath:
path: /data/html
type: DirectoryOrCreate
persistent volumes
-------------------

apiVersion: v1
kind: PersistentVolume
metadata:
name: pv-demo
spec:
capacity:
storage: 5Gi
accessModes:
- ReadWriteOnce
hostPath:
path: /mnt/data
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pvc-demo
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5Gi
___________________

EBS

apiVersion: v1
kind: PersistentVolume
metadata:
name: ebs-pv
spec:
capacity:
storage: 10Gi
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
awsElasticBlockStore:
volumeID: vol-0abcd1234efgh5678
fsType: ext4

CLAIM
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: ebs-pvc
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
--------------
apiVersion: apps/v1
kind: Deployment
metadata:
name: pvc-demo
spec:
replicas: 1
selector:
matchLabels:
app: pvc-demo
template:
metadata:
labels:
app: pvc-demo
spec:
containers:
- name: demo-container
image: nginx
volumeMounts:
- name: storage
mountPath: /usr/share/nginx/html
volumes:
- name: storage
persistentVolumeClaim:
claimName: app-pvc
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Видео Kubernetes Day -13 (Empty Directory, HostPath and LoadBalancer Labs) канала Global DevOps Lab