Database Backup Status

Microsoft.SQLServer.Linux.Monitor.Database.DBBackupStatus (UnitMonitor)

This monitor checks the status of the database backup as reported by Microsoft SQL Server. Note that this monitor is disabled by default. Use overrides to enable it when necessary.

Knowledge Base article:

Summary

This monitor checks the existence and age of the database backup as reported by Microsoft SQL Server. This is done by running a query against the master database of the SQL instance and returning the age of the database backup.

Causes

Database has not been backed up for too long.

Resolutions

You should perform a database backup to resolve the issue.

To eliminate this issue in future it is recommended to schedule an automated backup according to the needs of the application and business requirements.

Additional

Database Backup Status monitor has no logic to track whether the database is a secondary replica or not.

Since AOG has an advanced backup logic which requires a backup for at least one of the databases involved, the monitor may generate false positive alerts.

The monitor is disabled by default and if you want to enable the monitoring scenario for your environment, it is recommended to keep the monitor disabled for all servers which are not used for storing the database backup.

External

Best Practice recommendations for SQL Server Database Backups

Overridable Parameters

Name	Description	Default Value
Alert Priority	Defines Alert Priority.	Normal
Alert Severity	Defines Alert Severity.	Error
Backup Period (days)	The target backup frequency in days. Should be set according to your Recovery Point Objective (RPO).	7
Enabled	Enables or disables the workflow.	No
Generates Alerts	Defines whether the workflow generates an Alert.	Yes
Interval (seconds)	The recurring interval of time in seconds in which to run the workflow.	86400
Synchronization Time	The synchronization time specified by using a 24-hour format. May be omitted.
Timeout (seconds)	Specifies the time the workflow is allowed to run before being closed and marked as failed.	300
Timeout for query execution (seconds)	The workflow will fail and register an event, if the query execution takes longer than the specified period.	60
Timeout for database connection (seconds)	The workflow will fail and register an event, if it cannot access the database during the specified period.	15

Element properties:

Target

Microsoft.SQLServer.Linux.Database

Parent Monitor

System.Health.AvailabilityState

Category

AvailabilityHealth

Enabled

False

Alert Generate

True

Alert Severity

Error

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.SQLServer.Linux.MonitorType.Database.DBBackupStatus

Remotable

True

Accessibility

Public

Alert Message

MSSQL on Linux: Database backup should be performed

Database "{2}" on SQL Server instance "{1}", computer "{0}" has not been backed up for {3} days.

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.SQLServer.Linux.Monitor.Database.DBBackupStatus" Accessibility="Public" Enabled="false" Target="SqlDiscL!Microsoft.SQLServer.Linux.Database" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Microsoft.SQLServer.Linux.MonitorType.Database.DBBackupStatus" ConfirmDelivery="false">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SQLServer.Linux.Monitor.Database.DBBackupStatus.AlertMessage">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/MachineName$</AlertParameter1>

      <AlertParameter2>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/InstanceName$</AlertParameter2>

      <AlertParameter3>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.Database"]/DatabaseName$</AlertParameter3>

      <AlertParameter4>$Data/Context/Property[@Name='DaysSinceBackup']$</AlertParameter4>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Good" MonitorTypeStateID="Good" HealthState="Success"/>

    <OperationalState ID="Bad" MonitorTypeStateID="Bad" HealthState="Error"/>

  </OperationalStates>

  <Configuration>

    <MachineName>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/MachineName$</MachineName>

    <NetbiosComputerName>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/NetbiosComputerName$</NetbiosComputerName>

    <InstanceName>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/InstanceName$</InstanceName>

    <ConnectionString>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/ConnectionString$</ConnectionString>

    <InstanceVersion>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/Version$</InstanceVersion>

    <InstanceEdition>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/Edition$</InstanceEdition>

    <DatabaseName>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.Database"]/DatabaseName$</DatabaseName>

    <Threshold>7</Threshold>

    <IntervalSeconds>86400</IntervalSeconds>

    <SyncTime/>

    <SqlExecTimeoutSeconds>60</SqlExecTimeoutSeconds>

    <SqlTimeoutSeconds>15</SqlTimeoutSeconds>

    <TimeoutSeconds>300</TimeoutSeconds>

  </Configuration>

</UnitMonitor>