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[英]kubernetes create a persistent volume and use in my django app
[英]Django migrations by Kubernetes Job and persistent Volume Claim
在 Kubernetes Django 部署的应用程序上使用 Job 和 Persistent Volume Claim 进行迁移和迁移模型的最佳方法是什么?
持久卷
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: csi-pvc
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5Gi
storageClassName: do-block-storage
工作
apiVersion: batch/v1
kind: Job
metadata:
name: django-migrations-job
spec:
template:
spec:
containers:
- name: app
image: user/app:latest
command: ["/bin/sh", "-c"]
args: ["python manage.py makemigrations app; python manage.py migrate"]
volumeMounts:
- mountPath: "/container-code-dir/app/migrations"
name: my-do-volume
volumes:
- name: my-do-volume
persistentVolumeClaim:
claimName: csi-pvc
对我来说看起来不错。 不确定是否需要在新 Pod 启动时运行此作业一次或每次?
如果它每次都在 Django 服务 pod 启动之前运行,也许你可以得到Init Containers 的帮助
例子:
apiVersion: v1
kind: Pod
metadata:
name: myapp-pod
labels:
app: myapp
spec:
containers:
- name: myapp-container
image: busybox:1.28
command: ['sh', '-c', 'echo The app is running! && sleep 3600']
initContainers:
- name: init-myservice
image: busybox:1.28
command: ['sh', '-c', 'until nslookup myservice; do echo waiting for myservice; sleep 2; done;']
- name: init-mydb
image: busybox:1.28
command: ['sh', '-c', 'until nslookup mydb; do echo waiting for mydb; sleep 2; done;']
你可以为部署做同样的事情
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