“如何修复‘错误：必须在 Helm 中提供名称或指定 --generate-name’”

Question

如何Error: must either provide a name or specify --generate-name在 Helm 中修复

创建示例 helm chart 名称为 mychart 并使用 nginx 服务编写 deployment.yaml、service.yaml、ingress.yaml。之后运行像 $ helm install mychart 这样的命令

服务.yaml

apiVersion: v1
kind: Service
metadata:
  name: nginx
spec:
  ports:
  - name: main
    port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: nginx

部署.yaml

apiVersion: extensions/v1beta2
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 3
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
        - name: nginx
          image: nginx:1.13
          ports:
              containerPort: 80

入口.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nginx
  annotations:
    http.port: "443"
spec:
    backend:
        serviceName: nginx
        servicePort: 80

预期输出：...... status: DEPLOYED

Answer 1

只是--generate-name在helm命令末尾添加

Answer 2

根据 v3.x 的掌舵文档

helm install --help
Usage:
helm install [NAME] [CHART] [flags]

你想使用：
helm install "your release name" chart

例如：

# helm repo add stable https://kubernetes-charts.storage.googleapis.com/
# helm install wordpress-helm-testing stable/wordpress 
NAME: wordpress-helm-testing
LAST DEPLOYED: 2019-10-07 15:56:21.205156 -0700 PDT m=+1.763748029
NAMESPACE: default
STATUS: deployed
NOTES:
1. Get the WordPress URL:

  NOTE: It may take a few minutes for the LoadBalancer IP to be available.
        Watch the status with: 'kubectl get svc --namespace default -w wordpress-helm-testing'
  export SERVICE_IP=$(kubectl get svc --namespace default wordpress-helm-testing --template "{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}")
  echo "WordPress URL: http://$SERVICE_IP/"
  echo "WordPress Admin URL: http://$SERVICE_IP/admin"

2. Login with the following credentials to see your blog

  echo Username: user
  echo Password: $(kubectl get secret --namespace default wordpress-helm-testing -o jsonpath="{.data.wordpress-password}" | base64 --decode)


#helm list
NAME                    NAMESPACE   REVISION    UPDATED                                 STATUS      CHART          
wordpress-helm-testing  default     1           2019-10-07 15:56:21.205156 -0700 PDT    deployed    wordpress-7.3.9

这是一种更好的操作方法，因为它消除了发布名称中的随机性。您可能想要使用诸如用户名之类的东西，或者任何使它独一无二的东西，并为发行版添加除 GUID 之外的意义， --generate-name 选项将为您提供。

Answer 3

在 helm v3 中，您可以使用：

helm install [NAME] [CHART]

或者：

helm install [CHART] --generate-name

例子：

helm install reloader stakater/reloader
helm install stakater/reloader --generate-name

从帮助手册：

helm install --help
Usage:
  helm install [NAME] [CHART] [flags]
Flags:
  -g, --generate-name            generate the name (and omit the NAME parameter)