Add Windows Storage health script

storage_health.ps1

@@ -0,0 +1,134 @@
+
+<#
+# Windows physical disk / storage pool / virtual disk health reporter for windows_exporter
+# 
+# Written by Orsiris de Jong - NetInvent
+# 
+# Changelog
+# 2024-04-05: Initial version
+#
+# Tested on:
+# - Windows Server 2022 with Intel VROC and Storage Space Direct RAID
+#
+# Usage:
+#
+# Setup the path to the text collector directory (defaults to what the windows_exporter MSI installer sets
+# and create a scheduled task to run this script every 5 minutes
+# Run program: powershell.exe
+# Arguments: -ExecutionPolicy Bypass "C:\SCRIPTS\storage_health.ps1"
+#
+#>
+
+$TEXT_COLLECTOR_PATH="C:\Program Files\windows_exporter\textfile_inputs"
+
+function GetPhysicalDiskState {
+
+    $prometheus_status = "# HELP windows_physical_disk_health_status Is the disk in bad health
+# TYPE windows_physical_disk_health_status gauge
+# HELP windows_physical_disk_operational_status Is the disk in bad operational state
+# TYPE windows_physical_disk_operational_status gauge`n"
+
+    $physical_disks = Get-PhysicalDisk
+
+    foreach ($physical_disk in $physical_disks) {
+        if ($physical_disk.HealthStatus -eq "Healthy") {
+            $healthy = 0
+        } else {
+            $healthy = 1
+        }
+        if ($physical_disk.OperationalStatus -eq "OK") {
+            $op = 0
+        } else {
+            $op = 1
+        }
+
+        # Don't know why they put dots at the end of a serial number, but here we are
+        $serial = $physical_disk.SerialNumber.Replace('.', '')
+        $name = $physical_disk.FriendlyName
+
+        $prometheus_status += "windows_physical_disk_health_status{name=`"" + $name + "`",serialnumber=`"" + $serial + "`"} $healthy`n"
+        $prometheus_status += "windows_physical_disk_operational_status{name=`"" + $name + "`",serialnumber=`"" + $serial + "`"} $op`n"
+
+    }
+    return $prometheus_status
+}
+
+function GetStoragePoolStatus {
+
+    $prometheus_status = "# HELP windows_storage_pool_health_status Has the storage pool health failed
+# TYPE windows_storage_pool_health_status gauge
+# HELP windows_storage_pool_operational_status Has the storage pool operational status failed
+# TYPE windows_storage_pool_operational_status gauge
+# HELP windows_storage_pool_is_readonly Is the storage pool in degraded readnoly status
+# TYPE windows_storage_pool_is_readonly gauge`n"
+    $storage_pools = Get-StoragePool
+
+    foreach ($storage_pool in $storage_pools) {
+        if ($storage_pool.HealthStatus -eq "Healthy") {
+            $healthy = 0
+        } else {
+            $healthy = 1
+        }
+        if ($storage_pool.OperationalStatus -eq "OK") {
+            $op = 0
+        } else {
+            $op = 1
+        }
+
+        if ($storage_pool.IsReadonly -eq $false) {
+            $readonly = 0
+        } else {
+            $readonly = 1
+        }
+
+        $name = $storage_pool.FriendlyName
+        $primordial = $storage_pool.IsPrimordial
+
+        $prometheus_status += "windows_storage_pool_health_status{name=`"" + $name + "`",primordial=`"" + $primordial + "`"} $healthy`n"
+        $prometheus_status += "windows_storage_pool_operational_status{name=`"" + $name + "`",primordial=`"" + $primordial + "`"} $op`n"
+        $prometheus_status += "windows_storage_pool_is_readonly{name=`"" + $name + "`",primordial=`"" + $primordial + "`"} $readonly`n"
+
+    }
+    return $prometheus_status
+}
+
+
+function GetVirtualDiskStatus {
+
+    $prometheus_status = "# HELP windows_virtual_disk_health_status Has the virtual disk health failed
+# TYPE windows_virtual_disk_health_status gauge
+# HELP windows_virtual_disk_operational_status Has the virtual disk operational status failed
+# TYPE windows_virtual_disk_operational_status gauge`n"
+    $virtual_disks = Get-VirtualDisk
+
+    foreach ($virtual_disk in $virtual_disks) {
+        if ($virtual_disk.HealthStatus -eq "Healthy") {
+            $healthy = 0
+        } else {
+            $healthy = 1
+        }
+        if ($virtual_disk.OperationalStatus -eq "OK") {
+            $op = 0
+        } else {
+            $op = 1
+        }
+
+
+        $name = $virtual_disk.FriendlyName
+
+        $prometheus_status += "windows_virtual_disk_health_status{name=`"" + $name + "`"} $healthy`n"
+        $prometheus_status += "windows_virtual_disk_operational_status{name=`"" + $name + "`"} $op`n"
+
+    }
+    return $prometheus_status
+}
+
+
+$prometheus_status = ""
+$prometheus_status += GetPhysicalDiskState
+$prometheus_status += GetStoragePoolStatus
+$prometheus_status += GetVirtualDiskStatus
+
+$prom_file = Join-Path -Path $TEXT_COLLECTOR_PATH -ChildPath "windows_storage_health.prom"
+# The following command forces powershell to create a UTF-8 file without BOM, see https://stackoverflow.com/a/34969243
+$null = New-Item -Force $prom_file -Value $prometheus_status