Private/Export-KubeContexts.ps1
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function Export-KubeContexts { param ( [string]$KubeConfigPath = "$HOME/.kube/config", [string]$OutputFile = "$HOME/.kube/filtered-config", [string]$Contexts = "" ) # Check if the config file exists if (-not (Test-Path -Path $KubeConfigPath)) { Write-Host "Kubeconfig file not found at $KubeConfigPath." -ForegroundColor Red return } # Load the kubeconfig YAML using Powershell-Yaml module $kubeConfigContent = Get-Content -Raw -Path $KubeConfigPath $kubeConfig = $kubeConfigContent | ConvertFrom-Yaml # Split the Contexts parameter into an array of context names $contextList = $Contexts -split ',' | ForEach-Object { $_.Trim() } if (-not $contextList -or $contextList.Count -eq 0) { Write-Host "No contexts specified or invalid context list." -ForegroundColor Red return } # Initialize collections for the filtered items $filteredContexts = @() $filteredClusters = @() $filteredUsers = @() # Loop through the context list and gather associated clusters and users foreach ($contextName in $contextList) { $context = $kubeConfig.contexts | Where-Object { $_.name -eq $contextName } if (-not $context) { Write-Host "Context $contextName not found in the kubeconfig." -ForegroundColor Yellow continue } # Add the context to the filtered contexts $filteredContexts += @{ name = $context.name context = @{ cluster = $context.context.cluster user = $context.context.user } } # Collect the associated cluster $clusterName = $context.context.cluster $cluster = $kubeConfig.clusters | Where-Object { $_.name -eq $clusterName } if ($cluster -and -not ($filteredClusters | Where-Object { $_.name -eq $clusterName })) { $filteredClusters += @{ name = $cluster.name cluster = @{ server = $cluster.cluster.server 'certificate-authority-data' = $cluster.cluster.'certificate-authority-data' } } } # Collect the associated user $userName = $context.context.user $user = $kubeConfig.users | Where-Object { $_.name -eq $userName } if ($user -and -not ($filteredUsers | Where-Object { $_.name -eq $userName })) { $filteredUsers += @{ name = $user.name user = @{ 'client-certificate-data' = $user.user.'client-certificate-data' 'client-key-data' = $user.user.'client-key-data' } } } } if (-not $filteredContexts) { Write-Host "No matching contexts were found." -ForegroundColor Red return } # Create a new kubeconfig structure, ensuring the correct order of preferences after kind $newKubeConfig = [ordered]@{ apiVersion = "v1" kind = "Config" preferences = @{} clusters = $filteredClusters contexts = $filteredContexts users = $filteredUsers } # Convert the new KubeConfig to YAML using Powershell-Yaml and save it $newKubeConfigYaml = ConvertTo-Yaml -Data $newKubeConfig Set-Content -Path $OutputFile -Value $newKubeConfigYaml Write-Host "`nFiltered kubeconfig exported to $OutputFile." -ForegroundColor Green } |