chiefgeek
a1a17e81a1
Includes updated JS challenge scripts with Claude-User whitelist, same-site referer bypass, Blackbox-Exporter allowed bot, and all new exporters, cheat sheets, and automation scripts.
626 lines
24 KiB
PowerShell
626 lines
24 KiB
PowerShell
<#
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.SYNOPSIS
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Hyper-V Prometheus Metrics Exporter
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.DESCRIPTION
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Prometheus exporter for Hyper-V virtual machines - VM state, CPU usage,
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memory allocation, disk usage, network throughput, snapshot counts,
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replication status, and host resource consumption. Exports metrics as
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Prometheus-compatible text format.
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.PARAMETER Mode
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Output mode: 'stdout' (default), 'textfile', or 'http'
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.PARAMETER Port
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HTTP port for http mode (default: 9516)
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.PARAMETER TextfileDir
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Directory for textfile collector output (default: C:\ProgramData\node_exporter)
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.PARAMETER InstallScheduledTask
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Switch to create a scheduled task for auto-start on system boot
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.PARAMETER TaskIntervalMinutes
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Interval in minutes for the scheduled task (default: 2)
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.NOTES
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Author: Phil Connor
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Contact: contact@mylinux.work
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Website: https://mylinux.work
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License: MIT
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Version: 1.0
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Metrics Exported:
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Core Status:
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- hyperv_up
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- hyperv_exporter_info{version}
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VM State:
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- hyperv_vm_state{vm,state}
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- hyperv_vm_uptime_seconds{vm}
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- hyperv_vm_generation{vm}
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CPU:
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- hyperv_vm_cpu_count{vm}
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- hyperv_vm_cpu_usage_percent{vm}
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Memory:
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- hyperv_vm_memory_assigned_bytes{vm}
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- hyperv_vm_memory_demand_bytes{vm}
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- hyperv_vm_memory_startup_bytes{vm}
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- hyperv_vm_dynamic_memory_enabled{vm}
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Disk:
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- hyperv_vm_vhd_size_bytes{vm,path}
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- hyperv_vm_vhd_current_size_bytes{vm,path}
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Network:
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- hyperv_vm_network_adapter_bytes_sent{vm,adapter}
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- hyperv_vm_network_adapter_bytes_received{vm,adapter}
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Snapshots:
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- hyperv_vm_snapshot_count{vm}
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Replication:
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- hyperv_vm_replication_state{vm,state}
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- hyperv_vm_replication_health{vm,health}
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Host:
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- hyperv_host_logical_processors
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- hyperv_host_memory_total_bytes
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- hyperv_host_memory_available_bytes
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- hyperv_host_vm_count_total
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- hyperv_host_vm_running_count
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Summary:
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- hyperv_vm_total
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- hyperv_vm_running_total
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- hyperv_vm_stopped_total
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Exporter:
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- hyperv_exporter_duration_seconds
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- hyperv_exporter_last_run_timestamp
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#>
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param(
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[ValidateSet('stdout', 'textfile', 'http')]
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[string]$Mode = 'stdout',
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[int]$Port = 9516,
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[string]$TextfileDir = 'C:\ProgramData\node_exporter',
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[switch]$InstallScheduledTask,
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[int]$TaskIntervalMinutes = 2
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)
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# Create a scheduled task to run this script every $TaskIntervalMinutes minutes
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if ($InstallScheduledTask) {
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$taskName = "HyperVMetricsExporter"
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$existingTask = Get-ScheduledTask -TaskName $taskName -ErrorAction SilentlyContinue
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if (-not $existingTask) {
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$taskAction = New-ScheduledTaskAction -Execute "powershell.exe" -Argument "-NoProfile -ExecutionPolicy Bypass -File `"$($MyInvocation.MyCommand.Path)`" -Mode textfile"
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if (-not $TaskIntervalMinutes -or $TaskIntervalMinutes -le 0) {
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throw "TaskIntervalMinutes must be a positive integer"
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}
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$taskTrigger = New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) -RepetitionInterval (New-TimeSpan -Minutes $TaskIntervalMinutes) -RepetitionDuration (New-TimeSpan -Days 365)
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$taskPrincipal = New-ScheduledTaskPrincipal -UserId "SYSTEM" -LogonType ServiceAccount -RunLevel Highest
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try {
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Write-Host "Creating scheduled task: $taskName"
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Register-ScheduledTask -TaskName $taskName -Action $taskAction -Trigger $taskTrigger -Principal $taskPrincipal -Description "Exports Hyper-V metrics for Prometheus every $TaskIntervalMinutes minutes"
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$createdTask = Get-ScheduledTask -TaskName $taskName -ErrorAction SilentlyContinue
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if (-not $createdTask) {
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throw "Failed to verify scheduled task creation"
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}
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Write-Host "Successfully created scheduled task: $taskName" -ForegroundColor Green
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} catch {
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Write-Error "Failed to create scheduled task: $($_.Exception.Message)"
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throw
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}
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} else {
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Write-Host "Scheduled task '$taskName' already exists, skipping creation"
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}
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}
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$ErrorActionPreference = 'SilentlyContinue'
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# ============================================================================
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# HELPER FUNCTIONS
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# ============================================================================
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function Get-UnixTimestamp {
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[int][double]::Parse((Get-Date -UFormat '%s'))
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}
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function Format-MetricValue {
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param([double]$Value, [int]$Decimals = 2)
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[math]::Round($Value, $Decimals)
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}
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# ============================================================================
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# VM METRICS
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# ============================================================================
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function Get-VMMetrics {
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$sb = [System.Text.StringBuilder]::new()
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# Get all VMs
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$vms = @()
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try {
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$vms = Get-VM -ErrorAction Stop
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} catch {
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Write-Warning "Failed to query Hyper-V VMs: $_"
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return $sb.ToString()
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}
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# --- hyperv_vm_state ---
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$states = @('Running', 'Off', 'Saved', 'Paused', 'Starting', 'Stopping', 'Reset')
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[void]$sb.AppendLine('# HELP hyperv_vm_state Current state of the VM (1=current state, 0=other states)')
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[void]$sb.AppendLine('# TYPE hyperv_vm_state gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$currentState = $vm.State.ToString()
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foreach ($state in $states) {
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$val = if ($currentState -eq $state) { 1 } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_state{vm=`"$vmName`",state=`"$state`"} $val")
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}
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_uptime_seconds ---
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[void]$sb.AppendLine('# HELP hyperv_vm_uptime_seconds VM uptime in seconds')
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[void]$sb.AppendLine('# TYPE hyperv_vm_uptime_seconds gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$uptime = if ($vm.Uptime) { Format-MetricValue $vm.Uptime.TotalSeconds 0 } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_uptime_seconds{vm=`"$vmName`"} $uptime")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_generation ---
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[void]$sb.AppendLine('# HELP hyperv_vm_generation VM generation (1 or 2)')
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[void]$sb.AppendLine('# TYPE hyperv_vm_generation gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$gen = if ($vm.Generation) { $vm.Generation } else { 1 }
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[void]$sb.AppendLine("hyperv_vm_generation{vm=`"$vmName`"} $gen")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_cpu_count ---
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[void]$sb.AppendLine('# HELP hyperv_vm_cpu_count Number of virtual processors assigned to VM')
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[void]$sb.AppendLine('# TYPE hyperv_vm_cpu_count gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$cpuCount = if ($vm.ProcessorCount) { $vm.ProcessorCount } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_cpu_count{vm=`"$vmName`"} $cpuCount")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_cpu_usage_percent ---
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[void]$sb.AppendLine('# HELP hyperv_vm_cpu_usage_percent Current CPU usage percentage of the VM')
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[void]$sb.AppendLine('# TYPE hyperv_vm_cpu_usage_percent gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$cpuUsage = if ($vm.CPUUsage -ne $null) { $vm.CPUUsage } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_cpu_usage_percent{vm=`"$vmName`"} $cpuUsage")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_memory_assigned_bytes ---
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[void]$sb.AppendLine('# HELP hyperv_vm_memory_assigned_bytes Currently assigned memory in bytes')
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[void]$sb.AppendLine('# TYPE hyperv_vm_memory_assigned_bytes gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$memAssigned = if ($vm.MemoryAssigned) { $vm.MemoryAssigned } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_memory_assigned_bytes{vm=`"$vmName`"} $memAssigned")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_memory_demand_bytes ---
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[void]$sb.AppendLine('# HELP hyperv_vm_memory_demand_bytes Current memory demand in bytes')
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[void]$sb.AppendLine('# TYPE hyperv_vm_memory_demand_bytes gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$memDemand = if ($vm.MemoryDemand) { $vm.MemoryDemand } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_memory_demand_bytes{vm=`"$vmName`"} $memDemand")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_memory_startup_bytes ---
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[void]$sb.AppendLine('# HELP hyperv_vm_memory_startup_bytes Configured startup memory in bytes')
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[void]$sb.AppendLine('# TYPE hyperv_vm_memory_startup_bytes gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$memStartup = if ($vm.MemoryStartup) { $vm.MemoryStartup } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_memory_startup_bytes{vm=`"$vmName`"} $memStartup")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_dynamic_memory_enabled ---
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[void]$sb.AppendLine('# HELP hyperv_vm_dynamic_memory_enabled Whether dynamic memory is enabled (1=yes, 0=no)')
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[void]$sb.AppendLine('# TYPE hyperv_vm_dynamic_memory_enabled gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$dynMem = if ($vm.DynamicMemoryEnabled) { 1 } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_dynamic_memory_enabled{vm=`"$vmName`"} $dynMem")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_vhd_size_bytes / hyperv_vm_vhd_current_size_bytes ---
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[void]$sb.AppendLine('# HELP hyperv_vm_vhd_size_bytes Maximum size of the VHD/VHDX in bytes')
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[void]$sb.AppendLine('# TYPE hyperv_vm_vhd_size_bytes gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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try {
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$hdds = Get-VMHardDiskDrive -VMName $vm.Name -ErrorAction Stop
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foreach ($hdd in $hdds) {
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$vhdPath = $hdd.Path -replace '\\', '/'
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try {
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$vhd = Get-VHD -Path $hdd.Path -ErrorAction Stop
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[void]$sb.AppendLine("hyperv_vm_vhd_size_bytes{vm=`"$vmName`",path=`"$vhdPath`"} $($vhd.Size)")
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} catch {}
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}
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} catch {}
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}
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[void]$sb.AppendLine('')
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[void]$sb.AppendLine('# HELP hyperv_vm_vhd_current_size_bytes Current file size of the VHD/VHDX in bytes')
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[void]$sb.AppendLine('# TYPE hyperv_vm_vhd_current_size_bytes gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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try {
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$hdds = Get-VMHardDiskDrive -VMName $vm.Name -ErrorAction Stop
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foreach ($hdd in $hdds) {
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$vhdPath = $hdd.Path -replace '\\', '/'
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try {
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$vhd = Get-VHD -Path $hdd.Path -ErrorAction Stop
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[void]$sb.AppendLine("hyperv_vm_vhd_current_size_bytes{vm=`"$vmName`",path=`"$vhdPath`"} $($vhd.FileSize)")
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} catch {}
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}
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} catch {}
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_network_adapter ---
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[void]$sb.AppendLine('# HELP hyperv_vm_network_adapter_bytes_sent Total bytes sent by VM network adapter')
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[void]$sb.AppendLine('# TYPE hyperv_vm_network_adapter_bytes_sent counter')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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try {
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$adapters = Get-VMNetworkAdapter -VMName $vm.Name -ErrorAction Stop
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foreach ($adapter in $adapters) {
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$adapterName = if ($adapter.Name) { $adapter.Name } else { "Network Adapter" }
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$adapterName = $adapterName -replace '[\\"]', ''
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$sent = if ($adapter.BandwidthSetting) { 0 } else { 0 }
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# Use performance counters for actual byte counts
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try {
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$counterPath = "\Hyper-V Virtual Network Adapter($vmName - $adapterName)\Bytes Sent/sec"
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$counter = Get-Counter $counterPath -ErrorAction Stop
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$sent = [long]$counter.CounterSamples[0].CookedValue
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} catch { $sent = 0 }
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[void]$sb.AppendLine("hyperv_vm_network_adapter_bytes_sent{vm=`"$vmName`",adapter=`"$adapterName`"} $sent")
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}
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} catch {}
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}
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[void]$sb.AppendLine('')
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[void]$sb.AppendLine('# HELP hyperv_vm_network_adapter_bytes_received Total bytes received by VM network adapter')
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[void]$sb.AppendLine('# TYPE hyperv_vm_network_adapter_bytes_received counter')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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try {
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$adapters = Get-VMNetworkAdapter -VMName $vm.Name -ErrorAction Stop
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foreach ($adapter in $adapters) {
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$adapterName = if ($adapter.Name) { $adapter.Name } else { "Network Adapter" }
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$adapterName = $adapterName -replace '[\\"]', ''
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$received = 0
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try {
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$counterPath = "\Hyper-V Virtual Network Adapter($vmName - $adapterName)\Bytes Received/sec"
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$counter = Get-Counter $counterPath -ErrorAction Stop
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$received = [long]$counter.CounterSamples[0].CookedValue
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} catch { $received = 0 }
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[void]$sb.AppendLine("hyperv_vm_network_adapter_bytes_received{vm=`"$vmName`",adapter=`"$adapterName`"} $received")
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}
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} catch {}
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_snapshot_count ---
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[void]$sb.AppendLine('# HELP hyperv_vm_snapshot_count Number of checkpoints (snapshots) for the VM')
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[void]$sb.AppendLine('# TYPE hyperv_vm_snapshot_count gauge')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$snapCount = 0
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try {
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$snapCount = (Get-VMSnapshot -VMName $vm.Name -ErrorAction Stop | Measure-Object).Count
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} catch {}
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[void]$sb.AppendLine("hyperv_vm_snapshot_count{vm=`"$vmName`"} $snapCount")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_replication_state ---
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[void]$sb.AppendLine('# HELP hyperv_vm_replication_state VM replication state (1=current state)')
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[void]$sb.AppendLine('# TYPE hyperv_vm_replication_state gauge')
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$replStates = @('Disabled', 'ReadyForInitialReplication', 'InitialReplicationInProgress', 'WaitingForInitialReplication', 'Replicating', 'Suspended', 'Error', 'FailedOver', 'Recovered')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$currentReplState = $vm.ReplicationState.ToString()
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foreach ($rs in $replStates) {
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$val = if ($currentReplState -eq $rs) { 1 } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_replication_state{vm=`"$vmName`",state=`"$rs`"} $val")
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}
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}
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[void]$sb.AppendLine('')
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# --- hyperv_vm_replication_health ---
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[void]$sb.AppendLine('# HELP hyperv_vm_replication_health VM replication health (1=current health)')
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[void]$sb.AppendLine('# TYPE hyperv_vm_replication_health gauge')
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$replHealths = @('NotApplicable', 'Normal', 'Warning', 'Critical')
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foreach ($vm in $vms) {
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$vmName = $vm.Name -replace '[\\"]', ''
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$currentHealth = $vm.ReplicationHealth.ToString()
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foreach ($rh in $replHealths) {
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$val = if ($currentHealth -eq $rh) { 1 } else { 0 }
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[void]$sb.AppendLine("hyperv_vm_replication_health{vm=`"$vmName`",health=`"$rh`"} $val")
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}
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}
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[void]$sb.AppendLine('')
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# --- Summary metrics ---
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$runningCount = ($vms | Where-Object { $_.State -eq 'Running' } | Measure-Object).Count
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$stoppedCount = ($vms | Where-Object { $_.State -eq 'Off' } | Measure-Object).Count
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$totalCount = $vms.Count
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[void]$sb.AppendLine('# HELP hyperv_vm_total Total number of VMs')
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[void]$sb.AppendLine('# TYPE hyperv_vm_total gauge')
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[void]$sb.AppendLine("hyperv_vm_total $totalCount")
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[void]$sb.AppendLine('')
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[void]$sb.AppendLine('# HELP hyperv_vm_running_total Number of running VMs')
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[void]$sb.AppendLine('# TYPE hyperv_vm_running_total gauge')
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[void]$sb.AppendLine("hyperv_vm_running_total $runningCount")
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[void]$sb.AppendLine('')
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[void]$sb.AppendLine('# HELP hyperv_vm_stopped_total Number of stopped VMs')
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[void]$sb.AppendLine('# TYPE hyperv_vm_stopped_total gauge')
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[void]$sb.AppendLine("hyperv_vm_stopped_total $stoppedCount")
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[void]$sb.AppendLine('')
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$sb.ToString()
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}
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# ============================================================================
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# HOST METRICS
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# ============================================================================
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function Get-HostMetrics {
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$sb = [System.Text.StringBuilder]::new()
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# --- hyperv_host_logical_processors ---
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[void]$sb.AppendLine('# HELP hyperv_host_logical_processors Number of logical processors on the host')
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[void]$sb.AppendLine('# TYPE hyperv_host_logical_processors gauge')
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try {
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$cpuCount = (Get-CimInstance Win32_Processor -ErrorAction Stop | Measure-Object -Property NumberOfLogicalProcessors -Sum).Sum
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[void]$sb.AppendLine("hyperv_host_logical_processors $cpuCount")
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} catch {
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[void]$sb.AppendLine("hyperv_host_logical_processors 0")
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}
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[void]$sb.AppendLine('')
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# --- hyperv_host_memory_total_bytes ---
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[void]$sb.AppendLine('# HELP hyperv_host_memory_total_bytes Total physical memory on the host')
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[void]$sb.AppendLine('# TYPE hyperv_host_memory_total_bytes gauge')
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try {
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$totalMem = (Get-CimInstance Win32_ComputerSystem -ErrorAction Stop).TotalPhysicalMemory
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[void]$sb.AppendLine("hyperv_host_memory_total_bytes $totalMem")
|
|
} catch {
|
|
[void]$sb.AppendLine("hyperv_host_memory_total_bytes 0")
|
|
}
|
|
[void]$sb.AppendLine('')
|
|
|
|
# --- hyperv_host_memory_available_bytes ---
|
|
[void]$sb.AppendLine('# HELP hyperv_host_memory_available_bytes Available physical memory on the host')
|
|
[void]$sb.AppendLine('# TYPE hyperv_host_memory_available_bytes gauge')
|
|
try {
|
|
$availMem = (Get-CimInstance Win32_OperatingSystem -ErrorAction Stop).FreePhysicalMemory * 1024
|
|
[void]$sb.AppendLine("hyperv_host_memory_available_bytes $availMem")
|
|
} catch {
|
|
[void]$sb.AppendLine("hyperv_host_memory_available_bytes 0")
|
|
}
|
|
[void]$sb.AppendLine('')
|
|
|
|
# --- hyperv_host_vm_count_total ---
|
|
[void]$sb.AppendLine('# HELP hyperv_host_vm_count_total Total VMs configured on host')
|
|
[void]$sb.AppendLine('# TYPE hyperv_host_vm_count_total gauge')
|
|
try {
|
|
$vmCount = (Get-VM -ErrorAction Stop | Measure-Object).Count
|
|
[void]$sb.AppendLine("hyperv_host_vm_count_total $vmCount")
|
|
} catch {
|
|
[void]$sb.AppendLine("hyperv_host_vm_count_total 0")
|
|
}
|
|
[void]$sb.AppendLine('')
|
|
|
|
# --- hyperv_host_vm_running_count ---
|
|
[void]$sb.AppendLine('# HELP hyperv_host_vm_running_count Number of VMs currently running')
|
|
[void]$sb.AppendLine('# TYPE hyperv_host_vm_running_count gauge')
|
|
try {
|
|
$runCount = (Get-VM -ErrorAction Stop | Where-Object { $_.State -eq 'Running' } | Measure-Object).Count
|
|
[void]$sb.AppendLine("hyperv_host_vm_running_count $runCount")
|
|
} catch {
|
|
[void]$sb.AppendLine("hyperv_host_vm_running_count 0")
|
|
}
|
|
[void]$sb.AppendLine('')
|
|
|
|
$sb.ToString()
|
|
}
|
|
|
|
# ============================================================================
|
|
# COLLECT ALL METRICS
|
|
# ============================================================================
|
|
|
|
function Get-AllMetrics {
|
|
$scriptStart = Get-Date
|
|
$sb = [System.Text.StringBuilder]::new()
|
|
|
|
# Exporter up
|
|
[void]$sb.AppendLine('# HELP hyperv_up Exporter status (1=up, 0=down)')
|
|
[void]$sb.AppendLine('# TYPE hyperv_up gauge')
|
|
[void]$sb.AppendLine('hyperv_up 1')
|
|
[void]$sb.AppendLine('')
|
|
|
|
# Exporter info
|
|
[void]$sb.AppendLine('# HELP hyperv_exporter_info Exporter version information')
|
|
[void]$sb.AppendLine('# TYPE hyperv_exporter_info gauge')
|
|
[void]$sb.AppendLine('hyperv_exporter_info{version="1.0"} 1')
|
|
[void]$sb.AppendLine('')
|
|
|
|
# Collect VM metrics
|
|
[void]$sb.Append((Get-VMMetrics))
|
|
|
|
# Collect host metrics
|
|
[void]$sb.Append((Get-HostMetrics))
|
|
|
|
# Exporter runtime
|
|
$scriptEnd = Get-Date
|
|
$duration = Format-MetricValue ($scriptEnd - $scriptStart).TotalSeconds
|
|
$timestamp = Get-UnixTimestamp
|
|
|
|
[void]$sb.AppendLine('# HELP hyperv_exporter_duration_seconds Time to generate all metrics')
|
|
[void]$sb.AppendLine('# TYPE hyperv_exporter_duration_seconds gauge')
|
|
[void]$sb.AppendLine("hyperv_exporter_duration_seconds $duration")
|
|
[void]$sb.AppendLine('')
|
|
[void]$sb.AppendLine('# HELP hyperv_exporter_last_run_timestamp Unix timestamp of last successful run')
|
|
[void]$sb.AppendLine('# TYPE hyperv_exporter_last_run_timestamp gauge')
|
|
[void]$sb.AppendLine("hyperv_exporter_last_run_timestamp $timestamp")
|
|
[void]$sb.AppendLine('')
|
|
|
|
$sb.ToString()
|
|
}
|
|
|
|
# ============================================================================
|
|
# HTTP SERVER MODE
|
|
# ============================================================================
|
|
|
|
function Start-HttpServer {
|
|
param([int]$ListenPort)
|
|
|
|
$prefix = "http://+:$ListenPort/"
|
|
$listener = [System.Net.HttpListener]::new()
|
|
$listener.Prefixes.Add($prefix)
|
|
|
|
try {
|
|
$listener.Start()
|
|
Write-Host "Starting Hyper-V metrics exporter on port $ListenPort..." -ForegroundColor Green
|
|
Write-Host "Metrics available at http://localhost:$ListenPort/metrics"
|
|
|
|
while ($listener.IsListening) {
|
|
$context = $listener.GetContext()
|
|
$request = $context.Request
|
|
$response = $context.Response
|
|
|
|
if ($request.Url.AbsolutePath -eq '/metrics') {
|
|
$metrics = Get-AllMetrics
|
|
$buffer = [System.Text.Encoding]::UTF8.GetBytes($metrics)
|
|
$response.ContentType = 'text/plain; version=0.0.4; charset=utf-8'
|
|
}
|
|
else {
|
|
$html = @"
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head><title>Hyper-V Metrics Exporter v1.0</title></head>
|
|
<body>
|
|
<h1>Hyper-V Metrics Exporter v1.0</h1>
|
|
<p><a href="/metrics">Metrics</a></p>
|
|
<h2>Metrics</h2>
|
|
<ul>
|
|
<li>VM state, uptime, generation</li>
|
|
<li>CPU count and usage</li>
|
|
<li>Memory assigned, demand, startup, dynamic memory</li>
|
|
<li>VHD size and current file size</li>
|
|
<li>Network adapter bytes sent/received</li>
|
|
<li>Snapshot count</li>
|
|
<li>Replication state and health</li>
|
|
<li>Host resource stats</li>
|
|
</ul>
|
|
</body>
|
|
</html>
|
|
"@
|
|
$buffer = [System.Text.Encoding]::UTF8.GetBytes($html)
|
|
$response.ContentType = 'text/html; charset=utf-8'
|
|
}
|
|
|
|
$response.ContentLength64 = $buffer.Length
|
|
$response.OutputStream.Write($buffer, 0, $buffer.Length)
|
|
$response.OutputStream.Close()
|
|
}
|
|
}
|
|
catch {
|
|
Write-Error "HTTP server error: $_"
|
|
Write-Error "If access denied, run: netsh http add urlacl url=http://+:$ListenPort/ user=Everyone"
|
|
}
|
|
finally {
|
|
if ($listener.IsListening) {
|
|
$listener.Stop()
|
|
}
|
|
}
|
|
}
|
|
|
|
# ============================================================================
|
|
# MAIN EXECUTION
|
|
# ============================================================================
|
|
|
|
switch ($Mode) {
|
|
'http' {
|
|
Start-HttpServer -ListenPort $Port
|
|
}
|
|
'textfile' {
|
|
$OutputFile = Join-Path $TextfileDir 'hyperv_metrics.prom'
|
|
|
|
$outputDir = Split-Path $OutputFile -Parent
|
|
if (-not (Test-Path $outputDir)) {
|
|
New-Item -Path $outputDir -ItemType Directory -Force | Out-Null
|
|
}
|
|
|
|
$tempFile = Join-Path $outputDir ".hyperv_metrics.$PID.tmp"
|
|
|
|
try {
|
|
$metrics = Get-AllMetrics
|
|
$metrics | Out-File -FilePath $tempFile -Encoding utf8 -NoNewline
|
|
|
|
$lineCount = ($metrics -split "`n").Count
|
|
if ($lineCount -lt 10) {
|
|
Remove-Item -Path $tempFile -Force -ErrorAction SilentlyContinue
|
|
Write-Error "Metrics file too small ($lineCount lines), keeping previous"
|
|
exit 1
|
|
}
|
|
|
|
Move-Item -Path $tempFile -Destination $OutputFile -Force
|
|
Write-Host "Metrics written to $OutputFile ($lineCount lines)" -ForegroundColor Green
|
|
}
|
|
catch {
|
|
Remove-Item -Path $tempFile -Force -ErrorAction SilentlyContinue
|
|
Write-Error "Failed to generate metrics: $_"
|
|
exit 1
|
|
}
|
|
}
|
|
default {
|
|
Get-AllMetrics | Write-Output
|
|
}
|
|
}
|