curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash

echo "source <(helm completion bash)" >> ~/.bashrc
source ~/.bashrc

# artifacthub.io에서 차트 검색
helm search hub {{ 검색어 }}

# repository명으로 차트 검색
helm search repo {{ 검색어 }}

# 리포지토리 추가
helm repo add [NAME] [URL] [flags]
# helm repo add bitnami https://charts.bitnami.com/bitnami

# values show
helm show values $repo/$chart
helm show readme $repo/$chart
helm show chart $repo/$chart
helm show crds $repo/$chart
helm template .
helm show values kiali/kiali-server --version=v1.82.0 > values.origin

# 인스톨
helm install my-release bitnami/<chart>

# values.yaml 경로에서
helm install ${appname} . -n ${namespace}

# 업그레이드
# values.yaml 경로에서
helm upgrade ${appname} . -n ${namespace}

# 패키지 파일 생성
helm package .

# 패키지 파일 helm repository에 push
helm push $package.tgz oci://$myrepository/$project

#index.yaml 현재 경로 기준으로 생성 (helm repository index)
helm repo index .

#helm repository 등록
helm repo add $repository $repositoryURL

helm list --help


This command lists all of the releases for a specified namespace (uses current namespace context if namespace not specified).

By default, it lists only releases that are deployed or failed. Flags like
'--uninstalled' and '--all' will alter this behavior. Such flags can be combined:
'--uninstalled --failed'.

By default, items are sorted alphabetically. Use the '-d' flag to sort by
release date.

If the --filter flag is provided, it will be treated as a filter. Filters are
regular expressions (Perl compatible) that are applied to the list of releases.
Only items that match the filter will be returned.

    $ helm list --filter 'ara[a-z]+'
    NAME                UPDATED                                  CHART
    maudlin-arachnid    2020-06-18 14:17:46.125134977 +0000 UTC  alpine-0.1.0

If no results are found, 'helm list' will exit 0, but with no output (or in
the case of no '-q' flag, only headers).

By default, up to 256 items may be returned. To limit this, use the '--max' flag.
Setting '--max' to 0 will not return all results. Rather, it will return the
server's default, which may be much higher than 256. Pairing the '--max'
flag with the '--offset' flag allows you to page through results.

Usage:
  helm list [flags]

Aliases:
  list, ls

Flags:
  -a, --all                  show all releases without any filter applied
  -A, --all-namespaces       list releases across all namespaces
  -d, --date                 sort by release date
      --deployed             show deployed releases. If no other is specified, this will be automatically enabled
      --failed               show failed releases
  -f, --filter string        a regular expression (Perl compatible). Any releases that match the expression will be included in the results
  -h, --help                 help for list
  -m, --max int              maximum number of releases to fetch (default 256)
      --offset int           next release index in the list, used to offset from start value
  -o, --output format        prints the output in the specified format. Allowed values: table, json, yaml (default table)
      --pending              show pending releases
  -r, --reverse              reverse the sort order
  -l, --selector string      Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2). Works only for secret(default) and configmap storage backends.
  -q, --short                output short (quiet) listing format
      --superseded           show superseded releases
      --time-format string   format time using golang time formatter. Example: --time-format "2006-01-02 15:04:05Z0700"
      --uninstalled          show uninstalled releases (if 'helm uninstall --keep-history' was used)
      --uninstalling         show releases that are currently being uninstalled

Global Flags:
      --debug                       enable verbose output
      --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-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 "/root/.config/helm/registry/config.json")
      --repository-cache string     path to the file containing cached repository indexes (default "/root/.cache/helm/repository")
      --repository-config string    path to the file containing repository names and URLs (default "/root/.config/helm/repositories.yaml")

# dir로 다운로드
helm pull ${repo}/${appname} --untar --version=${chart-version}

# values.yaml 경로 내에서
helm install -n ${namespace} ${appname} .
helm install -n ${namespace} ${appname} . --create-namespace
# 리포에서 가져오기
helm install -n ${namespace} ${appname} ${repo}/${appname} --set ${flags_for_overwrite}

# map value set
#cat values.yaml | yq -o props
--set foo.bar={ foo: bar }

# values.yaml 경로 내에서
helm update -n ${namespace} ${appname} .

helm uninstall -n ${namespace} ${appname}

# helm release정보, 설치 Description 확인
helm status -n ${namespace} ${appname}

# deploy된 모든 template metadata 확인 ( k8s-manifests )
helm get all -n ${namespace} ${appname}

helm registry login $registry
helm registry logout $registry
helm push $package.tgz oci://$registry
helm pull oci://$registry
helm show $target oci://$registry
helm template $target oci://$registry
helm install $releasename -n $ns oci://$registry
helm upgrade $releasename -n $ns oci://$registry

helm create $chartname

# 기존 values.yaml을 백업하고, 빈 values.yaml을 생성한다
mv values.yaml values-backup.yaml
> values.yaml

# 템플릿을 테스트해본다.
helm template mychart .
Error: template: cmp-common-si/templates/spring-cloud-vault.yaml:4:18: executing "cmp-common-si/templates/spring-cloud-vault.yaml" at <.Values.global.config.namePrefix>: nil pointer evaluating interface {}.config

Use --debug flag to render out invalid YAML

# yq를 이용하여 백업에서 가져옴
cat values-backup.yaml | yq -oprops | grep 'global.config.namePrefix' | yq -pprops >> values.yaml

helm create my-custom-app
cd my-custom-app
rm -rf templates/*

apiVersion: v2
name: my-custom-app
description: # input this
type: application
version: 1.0.0
appVersion: "1.0.0"

dependencies:
  - name: common
    version: 5.0.1
    repository: https://bjw-s-labs.github.io/helm-charts/

dependencies:
  - name: common
    version: 5.0.1
    repository: "file://./charts/common"

helm repo add bjw-s https://bjw-s-labs.github.io/helm-charts/
cd charts
helm pull bjw-s/common --untar

controllers:
  main:
    strategy: Recreate

    containers:
      main:
        image:
          repository: vaultwarden/server
          tag: 1.25.2

        env:
          DATA_FOLDER: "config"

service:
  main:
    controller: main
    ports:
      http:
        port: 80
      websocket:
        enabled: true
        port: 3012

ingress:
  main:
    hosts:
      - host: vaultwarden.example.com
        paths:
          - path: /
            pathType: Prefix
            service:
              identifier: main
              port: http

persistence:
  config:
    type: persistentVolumeClaim
    accessMode: ReadWriteOnce
    size: 1Gi
    globalMounts:
      - path: /config

#Step 1: 의존성 차트 다운로드
helm dependency update ./my-custom-app

#Step 2: 템플릿 정적 분석 (Lint)
helm lint ./my-custom-app

#Step 3: 최종 쿠버네티스 YAML 렌더링 확인 (Dry-run / Template)
helm template my-release ./my-custom-app

# repo 등록
helm repo add bitnami https://charts.bitnami.com/bitnami

# 차트 전체 리스트
helm search repo bitnami

# 차트 버전리스트
helm search repo bitnami/grafana -l

# 차트 다운로드
helm pull bitnami/grafana --untar --version=8.2.17 #Chart-version

docker login $myrepository
helm push $(helm package . | grep -o '/.*') oci://$myrepository/$project

helm package */.
helm repo index .

helm show values ${repo}/${chart} > values.origin.yaml

#helm repo list
#...
repo= #Set your repo `Name` -- 사용자가 등록한 repo Name은 일반화할 수 없음.
sdiff -s \
 <(helm show values ${repo}/$(cat Chart.yaml | yq '.name') \
   --version=$(cat Chart.yaml | yq '.version') | yq -oprops) \
 <(cat ./values.yaml | yq -oprops)