PowerShellでHelmチャートバージョン一覧取得と更新自動化を完全解説

  choco install kubernetes-helm

  sudo snap install helm --classic

  brew install helm

winget install Microsoft.PowerShell

helm repo add stable https://charts.helm.sh/stable
helm repo update

  Install-Module -Name PSHelm -Force

  Install-Module -Name PSReadLine -Force

[Environment]::SetEnvironmentVariable("Path", $Env:Path + ";C:\path\to\helm", [EnvironmentVariableTarget]::Machine)

  kubectl cluster-info

  helm repo list

helm search repo <リポジトリ名>

helm search repo stable

helm search repo stable --output json

$jsonOutput = helm search repo stable --output json | ConvertFrom-Json
$jsonOutput | Format-Table

helm show chart stable/<チャート名>

helm show chart stable/mysql

# Helmリポジトリのチャート情報を取得
$repoName = "stable"
$charts = helm search repo $repoName --output json | ConvertFrom-Json

# 最新バージョンのチャートを表示
foreach ($chart in $charts) {
    Write-Output "Chart Name: $($chart.Name), Latest Version: $($chart.Version)"
}

helm repo update

[
  {
    "Name": "stable/mysql",
    "Version": "1.6.9",
    "AppVersion": "5.7.30",
    "Description": "Fast, reliable, scalable SQL database engine"
  },
  {
    "Name": "stable/nginx",
    "Version": "3.2.5",
    "AppVersion": "1.19.6",
    "Description": "High-performance HTTP server and reverse proxy"
  }
]

# Helmチャートのデータを取得
$charts = helm search repo stable --output json | ConvertFrom-Json

# バージョン1.6以上のチャートを抽出
$filteredCharts = $charts | Where-Object { [version]$_."Version" -ge "1.6" }
$filteredCharts | Format-Table Name, Version

# "mysql"を含むチャートを抽出
$mysqlCharts = $charts | Where-Object { $_.Name -like "*mysql*" }
$mysqlCharts | Format-Table Name, Version, Description

# フィルタリングしたチャートをCSVに保存
$filteredCharts | Export-Csv -Path "./filteredCharts.csv" -NoTypeInformation

# カスタムフォーマットの出力
$filteredCharts | ForEach-Object {
    Write-Output "Chart: $($_.Name), Version: $($_.Version), App Version: $($_.AppVersion)"
}

# バージョンごとのチャート数をカウント
$versionStats = $charts | Group-Object Version | Select-Object Name, Count
$versionStats | Format-Table Name, Count

# 旧バージョンのチャートを抽出
$outdatedCharts = $charts | Where-Object { [version]$_."Version" -lt "1.6" }
$outdatedCharts | Format-Table Name, Version

# Helmリポジトリの更新
Write-Output "Updating Helm repository..."
helm repo update

# 対象チャートを定義
$targetCharts = @("stable/mysql", "stable/nginx")

# 各チャートのバージョンを確認し、更新を実行
foreach ($chart in $targetCharts) {
    Write-Output "Checking chart: $chart"

    # 現在のバージョンを取得
    $chartInfo = helm search repo $chart --output json | ConvertFrom-Json
    $latestVersion = $chartInfo[0].Version

    # デプロイ中のバージョンを確認
    $deployedVersion = (helm list --filter $chart --output json | ConvertFrom-Json)[0].Chart | Select-String -Pattern "(?<=-)\d+(\.\d+)*$" | ForEach-Object { $_.Matches.Value }

    Write-Output "Latest version: $latestVersion, Deployed version: $deployedVersion"

    # バージョンが異なる場合は更新
    if ($deployedVersion -ne $latestVersion) {
        Write-Output "Updating $chart to version $latestVersion..."
        helm upgrade $chart $chart --install
    } else {
        Write-Output "$chart is already up-to-date."
    }
}

helm repo update

$chartInfo = helm search repo stable/mysql --output json | ConvertFrom-Json
$latestVersion = $chartInfo[0].Version

$deployedVersion = (helm list --filter stable/mysql --output json | ConvertFrom-Json)[0].Chart

if ($deployedVersion -ne $latestVersion) {
    helm upgrade stable/mysql stable/mysql --install
}

try {
    helm upgrade $chart $chart --install
} catch {
    Write-Error "Failed to update $chart: $_"
}

Start-Transcript -Path "./helm_update_log.txt"
# スクリプト本体
Stop-Transcript

   powershell.exe

   -File "C:\path\to\helm_update_script.ps1"

   Set-ExecutionPolicy RemoteSigned -Scope CurrentUser

# ログファイルのパスを指定
$logPath = "./helm_update_log.txt"

# ログ出力関数
function Log {
    param ([string]$message)
    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
    Add-Content -Path $logPath -Value "$timestamp - $message"
}

# スクリプト内で使用
Log "Helm repository update started."
helm repo update | Out-Null
Log "Helm repository update completed."

helm repo update -Verbose

try {
    Log "Starting Helm repository update..."
    helm repo update | Out-Null
    Log "Helm repository update completed successfully."
} catch {
    Log "Error occurred: $_"
    Write-Error "Failed to update Helm repository."
}

# メール送信設定
$SmtpServer = "smtp.example.com"
$From = "alert@example.com"
$To = "admin@example.com"
$Subject = "Helm Update Script Error"
$Body = "An error occurred in the Helm update script."

try {
    # Helmリポジトリの更新
    helm repo update | Out-Null
} catch {
    # エラー時にメールを送信
    Send-MailMessage -From $From -To $To -Subject $Subject -Body $Body -SmtpServer $SmtpServer
}

$maxRetries = 3
$retryCount = 0
while ($retryCount -lt $maxRetries) {
    try {
        helm repo update | Out-Null
        Log "Helm repository update completed successfully."
        break
    } catch {
        $retryCount++
        Log "Retry attempt $retryCount failed. Error: $_"
        if ($retryCount -eq $maxRetries) {
            Log "Max retries reached. Failing the script."
            throw $_
        }
    }
}

# 管理するリポジトリリスト
$repositories = @("stable", "bitnami", "custom-repo")

# 各リポジトリを更新
foreach ($repo in $repositories) {
    Log "Updating repository: $repo"
    helm repo update | Out-Null

    # チャート一覧を取得
    $charts = helm search repo $repo --output json | ConvertFrom-Json
    foreach ($chart in $charts) {
        Log "Chart: $($chart.Name), Version: $($chart.Version)"
    }
}

# チャートの依存関係を確認
$chartName = "stable/mysql"
$chartDependencies = helm show dependencies $chartName
Write-Output "Dependencies for $chartName:"
Write-Output $chartDependencies

# GitHub Actions例
name: Update Helm Charts
on:
  schedule:
    - cron: "0 3 * * *"
jobs:
  update-helm:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v2
      - name: Install Helm
        run: |
          curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash
      - name: Run PowerShell Script
        run: |
          pwsh -File ./helm_update_script.ps1

function Update-HelmRepo {
    helm repo update | Out-Null
}

function Get-ChartVersions($repoName) {
    helm search repo $repoName --output json | ConvertFrom-Json
}

# メインスクリプト
Update-HelmRepo
$charts = Get-ChartVersions "stable"

  $apiKey = $Env:HELM_API_KEY

Send-MailMessage -From "alert@example.com" -To "admin@example.com" -Subject "Helm Update Error" -Body "An error occurred." -SmtpServer "smtp.example.com"

<#
.SYNOPSIS
  Helmリポジトリの自動更新スクリプト

.DESCRIPTION
  このスクリプトはHelmリポジトリを更新し、最新バージョンのチャートを確認します。
#>