Pod İçin hostPath Volume - Single Node İçindir, Host Bilgisayarın Diskindeki Bir Dizini Pod Kullanabilir

Giriş

Host bilgisayarın diskindeki bir dizini pod kullanabilir. Açıklaması şöyle. Yani sadece single node cluster için işe yarar. Örneğin minikube sadece hostPath destekler

A hostPath volume mounts a file or directory from the host node's filesystem into your Pod. So, if you have a multi-node cluster, the pod is restarted for some reasons and assigned to another node, the new node won't have the old data on the same path. That's why we have seen, that hostPath volumes work well only on single-node clusters.

Kullanım

1. volumes ile host bilgisayar üzerindeki dizin belirtilir.

2. Pod bu bu volume'u volumeMounts kullanır

Örnek

Şekle şöyle

Örnek

Şöyle yaparız

apiVersion: v1
kind: Pod
metadata:
  name: myapp
spec:
  containers:
    - name: myapp-container
      image: myapp-image
      volumeMounts:
        - name: data-volume
          mountPath: /data
  volumes:
    - name: data-volume
      hostPath:
        path: /mnt/data

Örnek - DirectoryOrCreate

Şeklen şöyle

Açıklaması şöyle

Mount a directory /var/local/data as a volume from the host machine to /usr/share/nginx/html location of the nginx container of a pod.

Any data written by the nginx-container at /usr/share/nginx/html location will be persisted at /var/local/data location of the host machine. If the pod terminates, data will remain safe at /var/local/data location.

Şöyle yaparız

#pod definition file with a volume 
apiVersion: v1
kind: Pod
metadata:
  name: webserver
spec:
  containers:
  - image: nginx:latest
    name: nginx-container
    volumeMounts:
    - mountPath: /usr/share/nginx/html
      name: test-vol
  volumes:
  - name: test-vol
    hostPath:
      path: /var/local/data
      type: DirectoryOrCreate

Örnek

Şöyle yaparız

apiVersion: v1
kind: Pod
metadata:
  name: test-pd
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
    volumeMounts:
    - mountPath: /test-pd
      name: test-volume
  volumes:
  - name: test-volume
    hostPath:
      # directory location on host
      path: /data
      # this field is optional
      type: Directory