ps/Modules/Alkami.DevOps.Minikube/Public/Start-Minikube.ps1

function Start-Minikube {
<#
    .SYNOPSIS
        Starts a Minikube Kubernetes cluster ready to host Alkami applications

    .DESCRIPTION
        Starts a Minikube Kubernetes cluster ready to host Alkami applications

    .PARAMETER InstallDependencies
        [switch] Will install all dependencies for running Minikube locally. Run this the first time starting Minikube.

    .PARAMETER IncludeMetricsServer
        [switch] Will include metrics server as part of the Minikube cluster.

    .PARAMETER IncludeKibana
        [switch] Will include Kibana as part of the Minikube cluster.

    .PARAMETER IncludeArgoCD
        [switch] Will include ArgoCD and Argo Rollouts as part of the Minikube cluster

    .PARAMETER ForceReset
        [switch] Will delete and recreate the entire minikube cluster. Required when wanting to edit the CPU and Memory allocation.

    .PARAMETER Cpus
        [uint32] Will set the Minikube CPU resource allocation to the specificed number of CPUs.

    .PARAMETER Memory
        [uint32] Will set the Minikube memory resource allocation to the specificed number of MegaBytes.

    .PARAMETER IngressPort
        [uint32] Will expose ingress traffic into the Minikube cluster on the specified port. Default: 10000

    .EXAMPLE
        Start-Minikube -InstallDependencies -IncludeMetricsServer -Cpus 6 -Memory 8 -IngressPort 7000
#>
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $false)]
        [switch]$InstallDependencies,

        [Parameter(Mandatory = $false)]
        [switch]$IncludeMetricsServer,

        [Parameter(Mandatory = $false)]
        [switch]$IncludeKibana,

        [Parameter(Mandatory = $false)]
        [switch]$IncludeArgoCD,

        [Parameter(Mandatory = $false)]
        [switch]$ForceReset,

        [Parameter(Mandatory = $false)]
        [uint32]$Cpus = 5,

        [Parameter(Mandatory = $false)]
        [uint32]$Memory = 6,

        [Parameter(Mandatory = $false)]
        [uint32]$IngressPort = 10000
    )

    $ErrorActionPreference = "Stop"
    $logLead = (Get-LogLeadName)
    $resourcesPath = Join-Path $PSScriptRoot "Resources"
    $config = Get-MinikubeConfigurationInformation

    if ($InstallDependencies.IsPresent) {
        Install-MinikubeDependencies
    }

    if ($ForceReset.IsPresent) {
        minikube delete
    }

    # Configure WSL memory usage.
    $wslConfigPath = "${Env:HOMEPATH}\.wslconfig"
    Write-Host "$logLead : Configuring WSL resource settings at: $wslConfigPath."
    $memoryLimit = "$($Memory)GB"
    $wslConfig = @"
[wsl2]
memory=$memoryLimit
swap=0
"@

    Set-Content -Path $wslConfigPath -Value $wslConfig -Force

	Restart-Wsl

    [string]$certsDirectory= "$resourcesPath\cacerts\*"

    [string]$miniKubeCertsDirectory = "${Env:HOMEPATH}\.minikube\certs"

    if (!(Test-Path $miniKubeCertsDirectory))
    {
        New-Item $miniKubeCertsDirectory -ItemType Directory
    }

    Write-Host "$logLead : Copying CA Certs to minikube cert location: ${miniKubeCertsDirectory}"

    Copy-item -Force -Recurse $certsDirectory -Destination $miniKubeCertsDirectory

    # The wslconfig allocates memory for wsl. Docker desktop doesn't get all of that memory so minikube will need less than 1024 bytes per gig allocated to wsl.
    $memoryBytes = $Memory * 800

    minikube config set cpus $Cpus
    minikube config set memory $memoryBytes

    minikube start  --driver=docker `
                    --embed-certs `
                    --addons dashboard `
                    --addons ingress `
                    --docker-opt=dns=10.0.16.42 `
                    --docker-opt=dns=10.0.16.43 `
                    --docker-opt=dns-search=corp.alkamitech.com `
                    --docker-opt=dns-search=fh.local `
                    --ports=$($IngressPort):443 `
                    --ports=32000:32000 `
                    --extra-config=kubelet.housekeeping-interval=10s

    if ($IncludeMetricsServer.IsPresent) {
       minikube addons enable metrics-server
    }

    Write-Host "$logLead : Copying Kerberos configuration file. (krb5.ini)"
    Copy-Item (Join-Path $resourcesPath "\krb5.ini") -Destination "C:\ProgramData\MIT\Kerberos5" -Force

    Write-Host "$logLead : Configuring Kerberos ticket cache location environment variable."
    # Set env variable for current session
    $Env:KRB5CCNAME = "c:\ProgramData\MIT\Kerberos5\krb5cc_0"
    # Set env variable for future sessions
    [System.Environment]::SetEnvironmentVariable('KRB5CCNAME','c:\ProgramData\MIT\Kerberos5\krb5cc_0', [System.EnvironmentVariableTarget]::Machine)

    Write-Host "$logLead : Creating localhost namespace..."

    kubectl create ns localhost

    Write-Host "$logLead : Initializing Kubernetes secrets..."

    Reset-MinikubeSecrets

    Write-Host "$logLead : Configuring tls for ingress"
    kubectl apply -f (Join-Path $resourcesPath "ingress-tls-secret.yaml")

    $ingressDeploy = kubectl get deployment/ingress-nginx-controller -n ingress-nginx -o yaml | ConvertFrom-Yaml

    Write-Host "$logLead : Updating Ingress Nginx with proxy forwarding enabled..."
    $ingressDeets = kubectl get cm ingress-nginx-controller -n ingress-nginx -o yaml | ConvertFrom-Yaml

    $ingressDeets.Data.Add('use-forwarded-headers', 'true')
    $ingressDeets | ConvertTo-Yaml | kubectl apply -f -

    Write-Host "$logLead : Deleting ingress nginx deployment"
    kubectl delete deployment/ingress-nginx-controller -n ingress-nginx

    $ingressDeploy.spec.template.spec.containers[0].args += "--default-ssl-certificate=ingress-nginx/ingress-tls-secret"
    $ingressDeploy.metadata.Remove('managedFields')
    $ingressDeploy.Remove('status')
    $modifiedDeploy = $ingressDeploy | ConvertTo-Yaml

    Write-Host "$logLead : Recreating ingress nginx deployment with default ssl certificiate"
    $modifiedDeploy | kubectl apply -f -

    Write-Host "$logLead : Waiting for ingress nginx controller to be healthy before proceeding..."
    kubectl rollout status deployment/ingress-nginx-controller -n ingress-nginx

    kubectl apply -f (Join-Path $resourcesPath "ingress-dashboard.yaml")

    Write-Host "$logLead : Checking for local kubernetes configuration file path: ${$localK8sConfigurationPath}"

    if (-not (Test-Path $config.localK8sConfigurationPath)) {
        Write-Host "$logLead : Missing local kubernetes configuration file path. Creating..."
        New-Item -path $HOME -name $config.localKubernetesConfigurationFolder  -type "directory"
        New-Item -path $config.localK8sConfigurationPath -name $config.localServiceVersionsFileName -type "file" -value "# Use this file to configure which services to install. You can copy any existing gitops values file for any environment - for example: https://bitbucket.corp.alkami.net/projects/AUTO/repos/alkami.gitops.kubernetes/browse/alkami-services/environments/tde/values.tde.yaml"
        New-Item -path $config.localK8sConfigurationPath -name $config.localServiceCustomizationsFileName -type "file" -value "# Use this file to customize any service definitions via env variables etc. You can also exclude a service from being installed into your local environment (exclude: true)"
    } else {
        Write-Host "$logLead : Found existing local kubernetes configuration file path at: $localK8sConfigurationPath"
    }

    if (!(helm repo list | select-string proget)) {
        Write-Host "$logLead : Missing helm repo configuration. Adding proget repo..."
        helm repo add proget "https://packagerepo.orb.alkamitech.com/helm/helm-charts"
    }

    if ($IncludeArgoCD.IsPresent) {
        Write-Host "$logLead : Adding ArgoCD helm repo configuration..."
        helm repo add argo https://argoproj.github.io/argo-helm
        helm repo add argo-rollouts https://argoproj.github.io/argo-helm
    }

    Write-Host "$logLead : Updating helm repos..."
    helm repo update

    Write-Host "$logLead : Installing alkami-local-dev helm chart..."
    helm install alkami-local-dev --repo https://packagerepo.orb.alkamitech.com/helm/helm-charts $config.helmChartName -n localhost --create-namespace --dependency-update -f $config.localServiceVersionsFilePath -f $config.localServiceCustomizationsFilePath

    if ($IncludeKibana.IsPresent) {
        helm install alkami-dev-kibana --repo https://packagerepo.orb.alkamitech.com/helm/helm-charts alkami-dev-kibana --dependency-update
    }

    if ($IncludeArgoCD.IsPresent) {
        $currentDate = (get-date).ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ssZ")
        helm install argocd argo/argo-cd -n argocd --create-namespace --set server.ingress.enabled=true --set server.ingress.hosts[0]=argocd.localhost.dev.alkami.net --set server.extraArgs[0]='--insecure' --set config.secret.extraArgs[1]='--disable-auth' --set configs.secret.argocdServerAdminPassword='$2y$10$CyYdVLTiR8OO2gGwkQsAeuwAFYeSOzPH6Kf/aan7fLau57fgVaUaq' --set configs.secret.argocdServerAdminPasswordMtime="$currentDate"
        helm install argo-rollouts argo-rollouts/argo-rollouts -n argo-rollouts --create-namespace
    }
}