Helm入门（一篇就够了）

apiVersion: chart API 版本 （必需）  #必须有
name: chart名称 （必需）     # 必须有 
version: 语义化2 版本（必需） # 必须有
kubeVersion: 兼容Kubernetes版本的语义化版本（可选）
description: 一句话对这个项目的描述（可选）
type: chart类型 （可选）
keywords:
  - 关于项目的一组关键字（可选）
home: 项目home页面的URL （可选）
sources:
  - 项目源码的URL列表（可选）
dependencies: # chart 必要条件列表 （可选）
  - name: chart名称 (nginx)
    version: chart版本 ("1.2.3")
    repository: （可选）仓库URL ("https://example.com/charts") 或别名 ("@repo-name")
    condition: （可选） 解析为布尔值的yaml路径，用于启用/禁用chart (e.g. subchart1.enabled )
    tags: # （可选）
      - 用于一次启用/禁用 一组chart的tag
    import-values: # （可选）
      - ImportValue 保存源值到导入父键的映射。每项可以是字符串或者一对子/父列表项
    alias: （可选） chart中使用的别名。当你要多次添加相同的chart时会很有用
maintainers: # （可选） # 可能用到
  - name: 维护者名字 （每个维护者都需要）
    email: 维护者邮箱 （每个维护者可选）
    url: 维护者URL （每个维护者可选）
icon: 用做icon的SVG或PNG图片URL （可选）
appVersion: 包含的应用版本（可选）。不需要是语义化，建议使用引号
deprecated: 不被推荐的chart （可选，布尔值）
annotations:
  example: 按名称输入的批注列表 （可选）.

name: nginx-helm
apiVersion: v1
version: 1.0.0

image:
  repository: nginx
  tag: '1.19.8'

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-helm-{{ .Values.image.repository }}
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx-helm
  template:
    metadata:
      labels:
        app: nginx-helm
    spec:
      containers:
      - name: nginx-helm
        image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
        ports:
        - containerPort: 80
          protocol: TCP

helm package wordpress/

helm repo add myrepo https://example.com/charts
helm push wordpress-0.1.0.tgz myrepo

helm install mywordpress myrepo/wordpress

helm upgrade mywordpress myrepo/wordpress --set image.tag=5.7.3-php8.0-fpm-alpine

helm rollback mywordpress 1

helm upgrade mywordpress myrepo/wordpress --version 0.2.0

helm uninstall mywordpress

helm uninstall mywordpress --delete-data

# [root@k8s-master nginx-helm-v2]# helm status mynginx
NAME: mynginx
LAST DEPLOYED: Fri Oct 29 14:27:32 2021
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None

The Kubernetes package manager
Common actions for Helm:
- helm search:    search for charts
- helm pull:      download a chart to your local directory to view
- helm install:   upload the chart to Kubernetes
- helm list:      list releases of charts
Environment variables:
| Name                               | Description                                                                                       |
|------------------------------------|---------------------------------------------------------------------------------------------------|
| $HELM_CACHE_HOME                   | set an alternative location for storing cached files.                                             |
| $HELM_CONFIG_HOME                  | set an alternative location for storing Helm configuration.                                       |
| $HELM_DATA_HOME                    | set an alternative location for storing Helm data.                                                |
| $HELM_DEBUG                        | indicate whether or not Helm is running in Debug mode                                             |
| $HELM_DRIVER                       | set the backend storage driver. Values are: configmap, secret, memory, sql.                       |
| $HELM_DRIVER_SQL_CONNECTION_STRING | set the connection string the SQL storage driver should use.                                      |
| $HELM_MAX_HISTORY                  | set the maximum number of helm release history.                                                   |
| $HELM_NAMESPACE                    | set the namespace used for the helm operations.                                                   |
| $HELM_NO_PLUGINS                   | disable plugins. Set HELM_NO_PLUGINS=1 to disable plugins.                                        |
| $HELM_PLUGINS                      | set the path to the plugins directory                                                             |
| $HELM_REGISTRY_CONFIG              | set the path to the registry config file.                                                         |
| $HELM_REPOSITORY_CACHE             | set the path to the repository cache directory                                                    |
| $HELM_REPOSITORY_CONFIG            | set the path to the repositories file.                                                            |
| $KUBECONFIG                        | set an alternative Kubernetes configuration file (default "~/.kube/config")                       |
| $HELM_KUBEAPISERVER                | set the Kubernetes API Server Endpoint for authentication                                         |
| $HELM_KUBECAFILE                   | set the Kubernetes certificate authority file.                                                    |
| $HELM_KUBEASGROUPS                 | set the Groups to use for impersonation using a comma-separated list.                             |
| $HELM_KUBEASUSER                   | set the Username to impersonate for the operation.                                                |
| $HELM_KUBECONTEXT                  | set the name of the kubeconfig context.                                                           |
| $HELM_KUBETOKEN                    | set the Bearer KubeToken used for authentication.                                                 |
| $HELM_KUBEINSECURE_SKIP_TLS_VERIFY | indicate if the Kubernetes API server's certificate validation should be skipped (insecure)       |
| $HELM_KUBETLS_SERVER_NAME          | set the server name used to validate the Kubernetes API server certificate                        |
| $HELM_BURST_LIMIT                  | set the default burst limit in the case the server contains many CRDs (default 100, -1 to disable)|
Helm stores cache, configuration, and data based on the following configuration order:
- If a HELM_*_HOME environment variable is set, it will be used
- Otherwise, on systems supporting the XDG base directory specification, the XDG variables will be used
- When no other location is set a default location will be used based on the operating system
By default, the default directories depend on the Operating System. The defaults are listed below:
| Operating System | Cache Path                | Configuration Path             | Data Path               |
|------------------|---------------------------|--------------------------------|-------------------------|
| Linux            | $HOME/.cache/helm         | $HOME/.config/helm             | $HOME/.local/share/helm |
| macOS            | $HOME/Library/Caches/helm | $HOME/Library/Preferences/helm | $HOME/Library/helm      |
| Windows          | %TEMP%\helm               | %APPDATA%\helm                 | %APPDATA%\helm          |
Usage:
  helm [command]
Available Commands:
  completion  generate autocompletion scripts for the specified shell
  create      create a new chart with the given name
  dependency  manage a chart's dependencies
  env         helm client environment information
  get         download extended information of a named release
  help        Help about any command
  history     fetch release history
  install     install a chart
  lint        examine a chart for possible issues
  list        list releases
  package     package a chart directory into a chart archive
  plugin      install, list, or uninstall Helm plugins
  pull        download a chart from a repository and (optionally) unpack it in local directory
  push        push a chart to remote
  registry    login to or logout from a registry
  repo        add, list, remove, update, and index chart repositories
  rollback    roll back a release to a previous revision
  search      search for a keyword in charts
  show        show information of a chart
  status      display the status of the named release
  template    locally render templates
  test        run tests for a release
  uninstall   uninstall a release
  upgrade     upgrade a release
  verify      verify that a chart at the given path has been signed and is valid
  version     print the client version information
Flags:
      --burst-limit int                 client-side default throttling limit (default 100)
      --debug                           enable verbose output
  -h, --help                            help for helm
      --kube-apiserver string           the address and the port for the Kubernetes API server
      --kube-as-group stringArray       group to impersonate for the operation, this flag can be repeated to specify multiple groups.
      --kube-as-user string             username to impersonate for the operation
      --kube-ca-file string             the certificate authority file for the Kubernetes API server connection
      --kube-context string             name of the kubeconfig context to use
      --kube-insecure-skip-tls-verify   if true, the Kubernetes API server's certificate will not be checked for validity. This will make your HTTPS connections insecure
      --kube-tls-server-name string     server name to use for Kubernetes API server certificate validation. If it is not provided, the hostname used to contact the server is used
      --kube-token string               bearer token used for authentication
      --kubeconfig string               path to the kubeconfig file
  -n, --namespace string                namespace scope for this request
      --registry-config string          path to the registry config file (default "/Users/yanglinwei/Library/Preferences/helm/registry/config.json")
      --repository-cache string         path to the file containing cached repository indexes (default "/Users/yanglinwei/Library/Caches/helm/repository")
      --repository-config string        path to the file containing repository names and URLs (default "/Users/yanglinwei/Library/Preferences/helm/repositories.yaml")
Use "helm [command] --help" for more information about a command.