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kokuwaio/helm-maven-plugin: Simple plugin to package helm charts

原作者: [db:作者] 来自: 网络 收藏 邀请

开源软件名称（OpenSource Name）：

kokuwaio/helm-maven-plugin

开源软件地址(OpenSource Url)：

https://github.com/kokuwaio/helm-maven-plugin

开源编程语言(OpenSource Language)：

Java 100.0%

开源软件介绍(OpenSource Introduction)：

Helm Maven Plugin

Maven Central CI

This is a Maven plugin for testing, packaging and uploading HELM charts. "HELM is a tool for managing Kubernetes charts. Charts are packages of pre-configured Kubernetes resources."

Visit https://docs.helm.sh for detailed information.

Currently the upload to ChartMuseum, Artifactory and Nexus is supported.

Helm v3

From version 5.0 Helm v3 is required. There is no longer support for Helm v2. For convenience reasons the stable repo is added by default.

Helm v2 users can still use plugin version 4.13.

Why?

Currently (October 2017) there is no simple Maven plugin to package existing HELM charts.

How?

By default, the plugin automatically downloads Helm at the specified version. You can also manually specify the download URL. Next to that it is possible to specify a local Helm binary. In all cases Helm will be executed in the background.

Add following dependency to your pom.xml:

<dependency>
  <groupId>io.kokuwa.maven</groupId>
  <artifactId>helm-maven-plugin</artifactId>
  <version>6.3.0</version>
</dependency>

Configuration Examples

Helm URL Auto Detection

The default setting is to construct the Helm download URL based upon the detected OS and architecture:

<build>
  <plugins>
    <plugin>
      <groupId>io.kokuwa.maven</groupId>
      <artifactId>helm-maven-plugin</artifactId>
      <version>6.3.0</version>
      <configuration>
        <chartDirectory>${project.basedir}</chartDirectory>
        <chartVersion>${project.version}</chartVersion>
      </configuration>
    </plugin>
  </plugins>
</build>

If you leave helmVersion and helmDownloadUrl empty the plugin will determine the latest version based on [https://api.github.com/repos/helm/helm/releases/latest].

Usage with Downloaded Binary

<build>
  <plugins>
  ...
    <plugin>
      <groupId>io.kokuwa.maven</groupId>
      <artifactId>helm-maven-plugin</artifactId>
      <version>6.3.0</version>
      <configuration>
        <chartDirectory>${project.basedir}</chartDirectory>
        <chartVersion>${project.version}</chartVersion>
        <!-- This is the related section when using binary download -->
        <helmDownloadUrl>https://get.helm.sh/helm-v3.8.1-linux-amd64.tar.gz</helmDownloadUrl>
      </configuration>
    </plugin>
  ...
  </plugins>
</build>

Usage with Local Binary

When useLocalHelmBinary is enabled, the plugin by default will search for the helm executable in PATH:

<build>
  <plugins>
  ...
    <plugin>
      <groupId>io.kokuwa.maven</groupId>
      <artifactId>helm-maven-plugin</artifactId>
      <version>6.3.0</version>
      <configuration>
        <chartDirectory>${project.basedir}</chartDirectory>
        <chartVersion>${project.version}</chartVersion>
        <!-- This is the related section to use local binary with auto-detection enabled. -->
        <useLocalHelmBinary>true</useLocalHelmBinary>
      </configuration>
    </plugin>
  ...
  </plugins>
</build>

The following is an example configuration that explicitly sets the directory in which to look for the helm executable, and disables the auto-detection feature:

<build>
  <plugins>
  ...
    <plugin>
      <groupId>io.kokuwa.maven</groupId>
      <artifactId>helm-maven-plugin</artifactId>
      <version>6.3.0</version>
      <configuration>
        <chartDirectory>${project.basedir}</chartDirectory>
        <chartVersion>${project.version}</chartVersion>
        <!-- This is the related section to use local binary with auto-detection disabled. -->
        <useLocalHelmBinary>true</useLocalHelmBinary>
        <autoDetectLocalHelmBinary>false</autoDetectLocalHelmBinary>
        <helmExecutableDirectory>/usr/local/bin</helmExecutableDirectory>        
      </configuration>
    </plugin>
  ...
  </plugins>
</build>

Configure Plugin to Use Credentials from settings.xml for Upload

<build>
  <plugins>
  ...
    <plugin>
      <groupId>io.kokuwa.maven</groupId>
      <artifactId>helm-maven-plugin</artifactId>
      <version>6.3.0</version>
      <configuration>
        <chartDirectory>${project.basedir}</chartDirectory>
        <chartVersion>${project.version}</chartVersion>
        <!-- This is the related section to configure upload repos -->
        <uploadRepoStable>
            <name>stable-repo</name>
            <url>https://repo.example.com/artifactory/helm-stable</url>
            <type>ARTIFACTORY</type>
        </uploadRepoStable>
        <uploadRepoSnapshot>
            <name>snapshot-repo</name>
            <url>https://my.chart.museum:8080/api/charts</url>
            <type>CHARTMUSEUM</type>
        </uploadRepoSnapshot>
        <helmDownloadUrl>https://get.helm.sh/helm-v3.8.1-linux-amd64.tar.gz</helmDownloadUrl>
      </configuration>
    </plugin>
  ...
  </plugins>
</build>

More Complex Example

<build>
  <plugins>
  ...
    <plugin>
      <groupId>io.kokuwa.maven</groupId>
      <artifactId>helm-maven-plugin</artifactId>
      <version>6.3.0</version>
      <configuration>
        <chartDirectory>${project.basedir}</chartDirectory>
        <chartVersion>${project.version}</chartVersion>
        <uploadRepoStable>
            <name>stable-repo</name>
            <url>https://repo.example.com/artifactory/helm-stable</url>
            <type>ARTIFACTORY</type>
            <username>foo</username>
            <password>bar</password>
        </uploadRepoStable>
        <uploadRepoSnapshot>
            <name>snapshot-repo</name>
            <url>https://my.chart.museum/api/charts</url>
            <type>CHARTMUSEUM</type>
        </uploadRepoSnapshot>
        <helmDownloadUrl>https://get.helm.sh/helm-v3.8.2-linux-amd64.tar.gz</helmDownloadUrl>
        <registryConfig>~/.config/helm/registry.json</registryConfig>
        <repositoryCache>~/.cache/helm/repository</repositoryCache>
        <repositoryConfig>~/.config/helm/repositories.yaml</repositoryConfig>
        <!-- Add a gpg signature to the chart -->
        <keyring>~/.gpg/secring.gpg</keyring>
        <key>MySigningKey</key>
        <passphrase>SecretPassPhrase</passphrase>
        <!-- Lint with strict mode -->
        <lintStrict>true</lintStrict>
        <!-- Disable adding of default repo stable https://charts.helm.sh/stable -->
        <addDefaultRepo>false</addDefaultRepo>
        <!-- Exclude a directory to avoid processing -->
        <excludes>
          <exclude>${project.basedir}/excluded</exclude>
          <exclude>${project.basedir}/**/excluded*</exclude>
        </excludes>
        <!-- Add an additional repo -->
        <helmExtraRepos>
          <helmRepo>
            <name>kokuwa</name>
            <url>https://kokuwa.github.io</url>
          </helmRepo>
        </helmExtraRepos>
        <!-- extra value settings for the lint command -->
        <values>
          <overrides>
            <component1.install.path>/opt/component1</component1.install.path>
          </overrides>
          <yamlFile>${project.basedir}/src/test/resources/myOverrides.yaml</yamlFile>
          <yamlFiles>
              <yamlFile>${project.basedir}/src/test/resources/myOverrides-1.yaml</yamlFile>
              <yamlFile>${project.basedir}/src/test/resources/myOverrides-2.yaml</yamlFile>
          </yamlFiles>
        </values>
      </configuration>
    </plugin>
  ...
  </plugins>
</build>

Features

  • Package Helm charts from standard folder structure
  • Test Helm charts (Helm lint)
  • Recursive chart detection (subcharts)
  • Helm does not need to be installed
  • Upload to ChartMuseum or Artifactory
  • Repository names are interpreted as server IDs to retrieve basic authentication from server list in settings.xml.

Usage

Goals

  • helm:init initializes Helm by downloading a specific version
  • helm:dependency-build resolves the chart dependencies
  • helm:package packages the given charts (chart.tar.gz)
  • helm:lint tests the given charts
  • helm:template Locally render templates
  • helm:dry-run simulates an install
  • helm:upload upload charts via HTTP PUT
  • helm:push push charts to OCI (docker registry)

Configuration

Parameter Type User Property Required Description
<chartDirectory> string helm.chartDirectory true root directory of your charts
<chartVersion> string helm.chartVersion true Version of the charts. The version have to be in the SEMVER-Format, required by helm.
<appVersion> string helm.appVersion false The version of the app. This needn't be SemVer.
<helmDownloadUrl> string helm.downloadUrl false URL to download helm. Leave empty to autodetect URL based upon OS and architecture.
<helmDownloadUser> string helm.downloadUser false Username used to authenticate while downloading helm binary package
<helmDownloadPassword> string helm.downloadPassword false Password used to authenticate while downloading helm binary package
<helmDownloadServerId> string helm.downloadServerId false Server Id in settings.xml which has username and password used to authenticate while downloading helm binary package
<helmVersion> string helm.version false Version of helm to download.
<githubUserAgent> string helm.githubUserAgent false To determine latest helm version this plugin uses the Github API. Therefore a user agent is needed. Defaults to kokuwaio/helm-maven-plugin
<tmpDir> string helm.tmpDir false Directory where to store cached Github responses. Defaults to ${java.io.tmpdir}/helm-maven-plugin
<excludes> list of strings helm.excludes false list of chart directories to exclude
<useLocalHelmBinary> boolean helm.useLocalHelmBinary false Controls whether a local binary should be used instead of downloading it. If set to true path has to be set with property executableDirectory
<autoDetectLocalHelmBinary> boolean helm.autoDetectLocalHelmBinary true Controls whether the local binary should be auto-detected from PATH environment variable. If set to false the binary in <helmExecutableDirectory> is used. This property has no effect unless <useLocalHelmBinary> is set to true.
<helmExecutableDirectory> string helm.executableDirectory false directory of your helm installation (default: ${project.build.directory}/helm)
<outputDirectory> string helm.outputDirectory false chart output directory (default: ${project.build.directory}/helm/repo)
<debug> boolean helm.debug false add debug to helm
<registryConfig> string helm.registryConfig false path to the registry config file
<repositoryCache> string helm.repositoryCache false path to the file containing cached repository indexes
<repositoryConfig> string helm.repositoryConfig false path to the file containing repository names and URLs
<helmExtraRepos> list of HelmRepository helm.extraRepos false adds extra repositories while init
<uploadRepoStable> HelmRepository helm.uploadRepo.stable true Upload repository for stable charts
<uploadRepoSnapshot> HelmRepository helm.uploadRepo.snapshot false Upload repository for snapshot charts (determined by version postfix 'SNAPSHOT')
<lintStrict> boolean helm.lint.strict false run lint command with strict option (fail on lint warnings)
<addDefaultRepo> boolean helm.init.add-default-repo true If true, stable repo (https://charts.helm.sh/stable) will be added
<addUploadRepos> boolean helm.init.add-upload-repos false If true, upload repos (uploadRepoStable, uploadRepoSnapshot) will be added, if configured
<skip> boolean helm.skip false skip plugin execution
<skipInit> boolean helm.init.skip false skip init goal
<skipLint> boolean helm.lint.skip false skip lint goal
<skipTemplate> boolean helm.template.skip false skip template goal. Default value is true due to the dry-run goal
<skipDryRun> boolean helm.dry-run.skip false skip dry-run goal
<skipDependencyBuild> boolean helm.dependency-build.skip false skip dependency-build goal
<skipPackage> boolean helm.package.skip false skip package goal
<skipUpload> boolean helm.upload.skip false skip upload goal
<skipInstall> boolean helm.install.skip false skip install goal
<security> string helm.security false path to your settings-security.xml (default: ~/.m2/settings-security.xml)
<keyring> string helm.package.keyring false path to gpg secret keyring for signing
<key> string helm.package.key false name of gpg key in keyring
<passphrase> string helm.package.passphrase false passphrase for gpg key (requires helm 3.4 or newer)
<values> ValueOverride helm.values false override some values for linting with helm.values.overrides (--set option), helm.values.stringOverrides (--set-string option), helm.values.fileOverrides (--set-file option) and last but not least helm.values.yamlFile (--values option)
<namespace> string helm.namespace false namespace scope for helm command
<kubeApiServer> string helm.kubeApiServer false the address and the port for the Kubernetes API server
<kubeAsUser> string helm.kubeAsUser false username to impersonate for the operation
<kubeAsGroup> string helm.kubeAsGroup false group to impersonate for the operation, this flag can be repeated to specify multiple groups
<kubeToken> string helm.kubeToken false bearer token used for authentication

Packaging with the Helm Lifecycle

To keep your pom files small you can use 'helm' packaging. This binds helm:init to the initialize phase, helm:dependency-build to the process-resources phase, helm:lint to the test phase,helm:package to the package phase and helm:upload to the deploy phase.

<pom>
  <artifactId>my-helm-charts</artifactId>
  <version>0.0.1</version>
  <packaging>helm</packaging>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>io.kokuwa.maven</groupId>
        <artifactId>helm-maven-plugin</artifactId>
        <!-- Mandatory when you use a custom lifecycle -->
        <extensions>true</extensions>
        <configuration>
          ...
        </configuration>
      </plugin>
    </plugins>
    ....
  </build>
</pom>

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