“如何解决'错误：必须在Helm中提供名称或指定--generate-name'”

Question

如何在头盔中修复Error: must either provide a name or specify --generate-name

将示例舵图名称创建为mychart，并使用nginx服务编写了deployment.yaml，service.yaml，ingress.yaml。之后，运行$ helm之类的命令，安装mychart

service.yaml

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

deployment.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

ingress.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

在头盔v3中，您可以使用以下任一方式：

helm install [NAME] [CHART]

或：

helm install [CHART] --generate-name

示例：

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)

Answer 2

根据v3.x的Helm文档

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

您要使用的：
   掌舵安装“您的发行名称”图表

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，因为它消除了发行版名称中的随机性。您可能想要使用诸如用户名之类的东西，或者使它唯一的东西，并且为GUID之外的版本增加含义，--generate-name选项将为您提供。

Answer 3

只需在--generate-name命令的末尾添加helm

Answer 4

假设图表在当前目录中：

helm install some-name。

输出：

NAME: some-name
LAST DEPLOYED: Sun Jan  5 21:03:25 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None

Answer 5

解决此问题的最佳/最简单方法是在用于安装 helm chart 的命令中附加“--generate-name”。