플러그인(Plugins)

헬름 + 쿠버네티스 가이드북은 Bharath Thippireddy의 Helm Kubernetes Packaging Manager for Developers and DevOps을 보고 작성되었습니다.

가이드북의 전체 목차 및 인덱싱은 헬름 + 쿠버네티스 가이드북 문서를 참고해주세요.

개요

1. 플러그인이란?
    

플러그인이란?

헬름에 없는 기능을 필요로 할 때, 누군가 개발해둔 헬름 플러그인(Helm Puglin)을 사용할 수 있습니다.

예제 플러그인으로 살펴보기

• salesforce/helm-starter (github) — plugin.yaml

  # Copyright (c) 2018, salesforce.com, inc.
  # All rights reserved.
  # SPDX-License-Identifier: BSD-3-Clause
  # For full license text, see the LICENSE file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  
  name: "starter"
  version: "1.0.0"
  usage: "Fetch, list, and delete helm starters from github."
  description: |-
    This plugin fetches, lists, and deletes helm starters from github.
  ignoreFlags: false
  useTunnel: false
  command: "$HELM_PLUGIN_DIR/starter.sh"

• salesforce/helm-starter (github) — starter.sh

  #!/bin/bash
  # Copyright (c) 2018, salesforce.com, inc.
  # All rights reserved.
  # SPDX-License-Identifier: BSD-3-Clause
  # For full license text, see the LICENSE file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  
  set -e
  
  usage() {
  cat << EOF
  Fetch, list, and delete helm starters from github.
  
  Available Commands:
      helm starter fetch GITURL       Install a bare Helm starter from Github (e.g git clone)
      helm starter list               List installed Helm starters
      helm starter update NAME        Refresh an installed Helm starter
      helm starter delete NAME        Delete an installed Helm starter
      helm starter inspect NAME       Print out a starter's readme
      --help                          Display this text
  EOF
  }
  
  # Create the passthru array
  PASSTHRU=()
  while [[ $# -gt 0 ]]
  do
  key="$1"
  
  # Parse arguments
  case $key in
      --help)
      HELP=TRUE
      shift # past argument
      ;;
      *)    # unknown option
      PASSTHRU+=("$1") # save it in an array for later
      shift # past argument
      ;;
  esac
  done
  
  # Restore PASSTHRU parameters
  set -- "${PASSTHRU[@]}" 
  
  # Show help if flagged
  if [ "$HELP" == "TRUE" ]; then
      usage
      exit 0
  fi
  
  # COMMAND must be either 'fetch', 'list', or 'delete'
  COMMAND=${PASSTHRU[0]}
  
  # Create the /starters directory, if needed
  mkdir -p ${HELM_DATA_HOME}/starters
  
  if [ "$COMMAND" == "fetch" ]; then
      REPO=${PASSTHRU[1]}
      cd ${HELM_DATA_HOME}/starters
      git clone ${REPO} --quiet
      exit 0
  elif [ "$COMMAND" == "update" ]; then
      STARTER=${PASSTHRU[1]}
      cd ${HELM_DATA_HOME}/starters/${STARTER}
      git pull origin $(git rev-parse --abbrev-ref HEAD) --quiet
      exit 0
  elif [ "$COMMAND" == "list" ]; then
      ls -A1 ${HELM_DATA_HOME}/starters
      exit 0
  elif [ "$COMMAND" == "delete" ]; then 
      STARTER=${PASSTHRU[1]}
      rm -rf ${HELM_DATA_HOME}/starters/${STARTER}
      exit 0
  elif [ "$COMMAND" == "inspect" ]; then 
      STARTER=${PASSTHRU[1]}
      find ${HELM_DATA_HOME}/starters/${STARTER} -type f -iname "*readme*" -exec cat {} \;
      exit 0
  else
      echo "Error: Invalid command."
      usage
      exit 1
  fi

플러그인 명령어들

helm plugin list
helm plugin install https://github.com/salesforce/helm-starter.git
helm plugin update starter

helm starter fetch GITHUB
helm starter update NAME
helm starter delete NAME
helm starter inspect NAME