mount azure disk to azure Kubernetes for PostgreSQL pod - postgresql

Question

I want mount azure disk to azure Kubernetes for PostgreSQL pod. My yml files
postgres-storage.yaml
apiVersion: v1
kind: PersistentVolume
metadata:
name: postgres-pv
spec:
capacity:
storage: 80Gi
storageClassName: manual
volumeMode: Filesystem
accessModes:
- ReadWriteOnce
azureDisk:
kind: Managed
diskName: es-us-dev-core-test
diskURI: /subscriptions/id/resourceGroups/kubernetes_resources_group/providers/Microsoft.Compute/disks/dev-test
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: postgres-pv-claim
spec:
storageClassName: manual
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 80Gi
postgres-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: postgres-config
labels:
app: postgres
data:
POSTGRES_DB: dev-test
POSTGRES_USER: admintpost
POSTGRES_PASSWORD: ada3dassasa
StatefulSet.yml
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: postgres-statefulset
labels:
app: postgres
spec:
serviceName: "postgres"
replicas: 1
selector:
matchLabels:
app: postgres
template:
metadata:
labels:
app: postgres
spec:
containers:
- name: postgres
image: postgres:12
envFrom:
- configMapRef:
name: postgres-config
ports:
- containerPort: 5432
name: postgresdb
volumeMounts:
- name: pv-data
mountPath: /var/lib/postgresql/data
volumes:
- name: pv-data
persistentVolumeClaim:
claimName: postgres-pv-claim
Instruction for create disk https://learn.microsoft.com/en-us/azure/aks/azure-disk-volume
I get an error that it cannot connect to the disk, could you please tell me how to add Azure Disk to the pod.Thanks.

Answer 1

Create Azure Disk in the correct resource group
Looking at the file postgres-storage.yaml:
in spec.azureDisk.diskURI I see that you have created the disk in the resource group kubernetes_resources_group. However, you should create the disk inside a resource group whose name is something like this:
MC_kubernetes_resources_group_<your cluster name>_<region of the cluster>
Make sure that you create the disk in the same availability zone as your cluster.
Set caching mode to None
In the file postgres-storage.yaml:
set spec.azureDisk.cachingMode to None
Fix the definition of StatefulSet.yml
If you're using Azure Disks then in the file StatefulSet.yml:
in spec.template.spec you should replace the following:
volumeMounts:
- name: pv-data
mountPath: /var/lib/postgresql/data
with the this:
volumeMounts:
- name: pv-data
mountPath: /var/lib/postgresql/data
subPath: pgdata
EDIT: fixed some mistakes in the last part.