Add check-health.ps1

Scripts/check-dns-resolution.ps1

@@ -1,7 +1,7 @@
 #!/bin/powershell
 <#
-.SYNTAX         ./train-dns-cache.ps1
-.DESCRIPTION	trains the DNS cache with frequently used domain names
+.SYNTAX         ./check-dns-resolution.ps1
+.DESCRIPTION	checks the DNS resolution with frequently used domain names
 .LINK		https://github.com/fleschutz/PowerShell
 .NOTES		Author:	Markus Fleschutz / License: CC0
 #>
@@ -18,14 +18,14 @@ try {
 
 	foreach($Row in $Table) {
 		$Domain = $Row.Domain
-		write-progress "Training DNS cache with $Domain..."
+		write-progress "Resolving $Domain..."
 		$Ignore = nslookup $Domain
 	}
 
 	$Count = $Table.Length
 	$StopTime = Get-Date
 	$TimeInterval = New-Timespan -start $StartTime -end $StopTime
-	write-host -foregroundColor green "Done - DNS cache trained with $Count domain names in $TimeInterval seconds"
+	write-host -foregroundColor green "OK - resolved $Count domain names in $TimeInterval seconds"
 	exit 0
 } catch {
 	write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"

Scripts/check-drive-space.ps1

@@ -14,15 +14,15 @@ if ($Drive -eq "" ) {
 
 try {
 	$DriveDetails = (get-psdrive $Drive)
-	[int]$FreeSpace = (($DriveDetails.Free / 1024) / 1024) / 1024
-	[int]$InUse = (($DriveDetails.Used / 1024) / 1024) / 1024
-	[int]$Total = ($InUse + $FreeSpace)
+	[int]$Free = (($DriveDetails.Free / 1024) / 1024) / 1024
+	[int]$Used = (($DriveDetails.Used / 1024) / 1024) / 1024
+	[int]$Total = ($Used + $Free)
 
-	if ($FreeSpace -lt $MinLevel) {
-        	write-warning "Drive $Drive has only $FreeSpace GB left to use! ($InUse GB out of $Total GB in use, minimum is $MinLevel GB)"
+	if ($Free -lt $MinLevel) {
+        	write-warning "Drive $Drive has only $Free GB left to use! ($Used GB out of $Total GB in use, minimum is $MinLevel GB)"
 		exit 1
 	}
-	write-host -foregroundColor green "OK - drive $Drive has $FreeSpace GB left to use ($InUse GB out of $Total GB in use, minimum is $MinLevel GB)"
+	write-host -foregroundColor green "OK - $Free GB free at drive $Drive ($Used GB used out of $Total GB, $MinLevel GB is minimum)"
 	exit 0
 } catch {
 	write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"

Scripts/check-health.ps1

@@ -0,0 +1,36 @@
+#!/bin/powershell
+<#
+.SYNTAX         ./check-health.ps1 
+.DESCRIPTION	checks the system health
+.LINK		https://github.com/fleschutz/PowerShell
+.NOTES		Author:	Markus Fleschutz / License: CC0
+#>
+
+try {
+	$Hostname = $(hostname)
+	"Checking health of $Hostname ..."
+
+	& check-swap-space.ps1
+	if ($lastExitCode -ne "0") { throw "check-swap-space.ps1 failed" }
+
+	if ($IsLinux) {
+		& check-drive-space.ps1 /
+	} else {
+		& check-drive-space.ps1 C
+	}
+	if ($lastExitCode -ne "0") { throw "check-drive-space.ps1 failed" }
+
+	if (-not($IsLinux)) {
+		& check-windows-system-files.ps1
+		if ($lastExitCode -ne "0") { throw "check-windows-system-files.ps1 failed" }
+	}
+
+	& check-dns-resolution.ps1
+	if ($lastExitCode -ne "0") { throw "check-dns-resolution.ps1 failed" }
+
+	write-host -foregroundColor green "OK - $Hostname is healthy"
+	exit 0
+} catch {
+	write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}