Fixes MSSQL backup check to not throw unknown if no backup exist

Author: LordHepipud

doc/31-Changelog.md

@@ -7,6 +7,12 @@ documentation before upgrading to a new release.
 
 Released closed milestones can be found on [GitHub](https://github.com/Icinga/icinga-powershell-mssql/milestones?state=closed).
 
+## 1.6.1 (2025-11-06)
+
+[Issue and PRs](https://github.com/Icinga/icinga-powershell-mssql/milestone/11?closed=1)
+
+* [#64](https://github.com/Icinga/icinga-powershell-mssql/pull/64) Fixes MSSQL backup check which threw `UNKNOWN` on MSSQL instances which have had no backups yet
+
 ## 1.6.0 (2025-09-23)
 
 [Issue and PRs](https://github.com/Icinga/icinga-powershell-mssql/milestone/8?closed=1)

plugins/Invoke-IcingaCheckMSSQLBackupStatus.psm1

@@ -140,7 +140,7 @@ function Invoke-IcingaCheckMSSQLBackupStatus
     $SqlConnection         = Open-IcingaMSSQLConnection -Username $SqlUsername -Password $SqlPassword -Address $SqlHost -IntegratedSecurity:$IntegratedSecurity -Port $SqlPort;
     $BackupSet             = Get-IcingaMSSQLBackupOverallStatus -SqlConnection $SqlConnection -IncludeDatabase $IncludeDatabase -IncludeDays $IncludeDays;
     $InstanceName          = Get-IcingaMSSQLInstanceName -SqlConnection $SqlConnection;
-    $CheckPackage          = New-IcingaCheckPackage -Name ([string]::Format('MSSQL Backup ({0})', $InstanceName)) -OperatorAnd -Verbose $Verbosity;
+    $CheckPackage          = New-IcingaCheckPackage -Name ([string]::Format('MSSQL Backup ({0})', $InstanceName)) -OperatorAnd -Verbose $Verbosity -IgnoreEmptyPackage;
 
     Close-IcingaMSSQLConnection -SqlConnection $SqlConnection;