如何使用pvc创建postgres掌舵图 [英] how to create helm chart of postgres with pvc

问题描述

我想为具有PVC(持久卷声明)的PostgreSQL创建一个舵图.

I would like to create a helm chart for PostgreSQL with PVC (persistent volume claim).

我看过尝试katacoda https://www.katacoda. com/courses/kubernetes/helm-package-manager 用pvc创建Postgres掌舵图.

I've looked at trying katacoda https://www.katacoda.com/courses/kubernetes/helm-package-manager Create Postgres helm chart with pvc.

我该怎么办?

推荐答案

我们可以从 PostgreSQL 掌舵图表文档，可以与以下参数一起使用:

As we can read from PostgreSQL helm charts docs it can be used with following parameters:

+----------------------------+-----------------------------------------------------------------+---------------+
|         Parameter          |                           Description                           |    Default    |
+----------------------------+-----------------------------------------------------------------+---------------+
| persistence.enabled        | Enable data persistence                                         | true          |
| persistence.existingClaim  | Use a existing PVC which must be created manually before bound  | nil           |
| persistence.storageClass   | Specify the storageClass used to provision the volume           | nil           |
| persistence.mountPath      | Path to mount data volume at                                    | nil           |
| persistence.accessMode     | Access mode of data volume                                      | ReadWriteOnce |
| persistence.size           | Size of data volume                                             | 8Gi           |
| persistence.annotations    | Persistent Volume Claim annotations                             | {}            |
+----------------------------+-----------------------------------------------------------------+---------------+

持久性

默认情况下，数据使用PostgreSQL状态集中的PVC模板保留.您可以禁用将persistence.enabled参数设置为false的持久性. Kubernetes集群中需要默认的StorageClass来动态配置卷.在persistence.storageClass中指定另一个StorageClass，或者如果已经存在要使用的永久卷，则设置persistence.existingClaim.

Persistence

The data is persisted by default using PVC templates in the PostgreSQL statefulset. You can disable the persistence setting the persistence.enabled parameter to false. A default StorageClass is needed in the Kubernetes cluster to dynamically provision the volumes. Specify another StorageClass in the persistence.storageClass or set persistence.existingClaim if you have already existing persistent volumes to use.

这意味着您只需要创建自己的持久卷即可例如可以看起来像这样:

This means you just need to create your own Persistent Volume which can for example look like this:

pv.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: task-pv-volume
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data"

pvc.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: task-pv-claim
spec:
  storageClassName: manual
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 8Gi

一旦部署并限制了边界，就可以安装PostgreSQL图表:

Once those are deployed and bounded you can install the PostgreSQL chart:

helm install my-release bitnami/postgresql --set persistence.existingClaim=task-pv-claim

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