Azure DevOps部署Helm Chart至AKS时元数据捕获失败警告如何解决？

你遇到的情况是Azure DevOps的Helm部署任务执行完成（应用已成功部署到AKS），但任务末尾抛出如下警告：

##[warning]Capturing deployment metadata failed with error: TypeError: Cannot read property 'kind' of null

完整部署日志如下：

Starting: Deploy Helm chart to qa3 environment
==============================================================================
Task         : Package and deploy Helm charts
Description  : Deploy, configure, update a Kubernetes cluster in Azure Container Service by running helm commands
Version      : 0.201.0
Author       : Microsoft Corporation
Help         : https://aka.ms/azpipes-helm-tsg
==============================================================================
/usr/local/bin/helm upgrade --namespace qa3 --install --values /home/vsts/work/1/s/invitation/values.yaml --set deployment.image.tag=***,deployment.environment=qa3,cluster.name=dev,azure.region=westus2,azure.appInsightsKey=***,deployment.deployedBy='cd',application.publicJwtValidationCertPemBase64=***,application.endpointPath=invitational,application.sendGridTemplateId=***,application.twillioFromPhoneNumber=***,secret.AuthToken=***,secret.AccountSid=***,secret.SendGridApiKey=*** --wait --install --reuse-values q5id-app-invitation /home/vsts/work/1/s/invitation
Release "q5id-app-invitation" has been upgraded. Happy Helming!
NAME: q5id-app-invitation
LAST DEPLOYED: Wed Aug 10 14:53:19 2022
NAMESPACE: qa3
STATUS: deployed
REVISION: 3
TEST SUITE: None
/usr/local/bin/kubectl cluster-info
Kubernetes control plane is running at https://***:443
CoreDNS is running at https://***:443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
Metrics-server is running at https://***:443/api/v1/namespaces/kube-system/services/https:metrics-server:/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
##[warning]Capturing deployment metadata failed with error: TypeError: Cannot read property 'kind' of null
Finishing: Deploy Helm chart to qa3 environment

从日志可见应用已成功部署，该警告不影响应用运行，属于Azure DevOps Helm任务的内部错误。

解决方法 #

• 直接忽略警告：该警告仅为任务在收集部署元数据时的异常，不会影响AKS上的应用状态，部署流程和应用运行均正常的情况下可无需处理。
• 升级Helm任务版本：你使用的是0.201.0版本的Helm任务，微软在后续版本中修复了该元数据捕获的bug，将任务升级到最新版本即可消除警告。
• 验证Helm Manifest完整性：可选执行helm get manifest q5id-app-invitation -n qa3命令，检查部署的资源定义是否存在格式异常（比如缺失kind字段的资源），若存在则修正Helm Chart模板。

内容的提问来源于stack exchange，提问作者Samuel