Azure Key Vault与AKS的集成适用于nginx教程Pod，但不是实际的项目部署

Question

根据标题，我按照文档进行了集成工作。

我可以部署nginx.yaml，大约70秒后，我可以打印出秘密:

kubectl exec -it nginx -- cat /mnt/secrets-store/secret1

现在我正试图将其应用于PostgreSQL部署进行测试，我从Poddescription中得到以下内容:

Warning  FailedMount             3s    kubelet                  MountVolume.SetUp failed for volume "secrets-store01-inline" : rpc error: code = Unknown desc = failed to mount secrets store objects for pod staging/postgres-deployment-staging-69965ff767-8hmww, err: rpc error: code = Unknown desc = failed to mount objects, error: failed to get keyvault client: failed to get key vault token: nmi response failed with status code: 404, err: <nil>

和nmi logs:

E0221 22:54:32.037357       1 server.go:234] failed to get identities, error: getting assigned identities for pod staging/postgres-deployment-staging-69965ff767-8hmww in CREATED state failed after 16 attempts, retry duration [5]s, error: <nil>. Check MIC pod logs for identity assignment errors
I0221 22:54:32.037409       1 server.go:192] status (404) took 80003389208 ns for req.method=GET reg.path=/host/token/ req.remote=127.0.0.1

不知道为什么，因为我基本上把设置从nignx.yaml复制到postgres.yaml。如下:

# nginx.yaml
kind: Pod
apiVersion: v1
metadata:
name: nginx
namespace: staging
labels:
aadpodidbinding: aks-akv-identity-binding-selector
spec:
containers:
- name: nginx
image: nginx
volumeMounts:
- name: secrets-store01-inline
mountPath: /mnt/secrets-store
readOnly: true
volumes:
- name: secrets-store01-inline
csi:
driver: secrets-store.csi.k8s.io
readOnly: true
volumeAttributes:
secretProviderClass: aks-akv-secret-provider

# postgres.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: postgres-deployment-staging
namespace: staging
labels:
aadpodidbinding: aks-akv-identity-binding-selector
spec:
replicas: 1
selector:
matchLabels:
component: postgres
template:
metadata:
labels:
component: postgres
spec:
containers:
- name: postgres
image: postgres:13-alpine
ports:
- containerPort: 5432
volumeMounts:
- name: secrets-store01-inline
mountPath: /mnt/secrets-store
readOnly: true
- name: postgres-storage-staging
mountPath: /var/postgresql
volumes:
- name: secrets-store01-inline
csi:
driver: secrets-store.csi.k8s.io
readOnly: true
volumeAttributes:
secretProviderClass: aks-akv-secret-provider
- name: postgres-storage-staging
persistentVolumeClaim:
claimName: postgres-storage-staging
---
apiVersion: v1
kind: Service
metadata:
name: postgres-cluster-ip-service-staging
namespace: staging
spec:
type: ClusterIP
selector:
component: postgres
ports:
- port: 5432
targetPort: 5432

对这里的问题有什么建议?

Answer 1

我的疏忽…aadpodidbinding应该在template:目录

https://azure.github.io/aad-pod-identity/docs/best-practices/deploymenthttpskubernetesiodocsconceptsworkloadscontrollersdeployment

生成的YAML应该是:

# postgres.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: postgres-deployment-production
namespace: production
spec:
replicas: 1
selector:
matchLabels:
component: postgres
template:
metadata:
labels:
component: postgres
aadpodidbinding: aks-akv-identity-binding-selector
spec:
containers:
- name: postgres
image: postgres:13-alpine
ports:
- containerPort: 5432
env: 
- name: POSTGRES_DB_FILE
value: /mnt/secrets-store/DEV-PGDATABASE
- name: POSTGRES_USER_FILE
value: /mnt/secrets-store/DEV-PGUSER
- name: POSTGRES_PASSWORD_FILE
value: /mnt/secrets-store/DEV-PGPASSWORD
- name: POSTGRES_INITDB_ARGS
value: "-A md5"
- name: PGDATA
value: /var/postgresql/data
volumeMounts:
- name: secrets-store01-inline
mountPath: /mnt/secrets-store
readOnly: true
- name: postgres-storage-production
mountPath: /var/postgresql
volumes:
- name: secrets-store01-inline
csi:
driver: secrets-store.csi.k8s.io
readOnly: true
volumeAttributes:
secretProviderClass: aks-akv-secret-provider
- name: postgres-storage-production
persistentVolumeClaim:
claimName: postgres-storage-production
---
apiVersion: v1
kind: Service
metadata:
name: postgres-cluster-ip-service-production
namespace: production
spec:
type: ClusterIP
selector:
component: postgres
ports:
- port: 5432
targetPort: 5432

Answer 2

在规范中添加模板将解决这个问题，使用标签" aadpodibinding: "your azure pod identity selector"在部署中的模板标签部分中。yaml文件

示例部署文件

apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: nginx
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
aadpodidbinding: azure-pod-identity-binding-selector
spec:
containers:
- name: nginx
image: nginx
env:
- name: SECRET
valueFrom:
secretKeyRef:
name: test-secret
key: key
volumeMounts:
- name: secrets-store-inline
mountPath: "/mnt/secrets-store"
readOnly: true
volumes:
- name: secrets-store-inline
csi:
driver: secrets-store.csi.k8s.io
readOnly: true
volumeAttributes:
secretProviderClass: dev-1spc