Availability Replicas Data Synchronization (Linux rollup)

Microsoft.SQLServer.Linux.Rollup.AvailabilityGroup.AvailabilityReplicasSynchronizing (DependencyMonitor)

This monitor rolls up the data synchronization state of all availability replicas and checks whether any availability replica is not in the expected synchronization state. The monitor is unhealthy when any asynchronous replica is not in SYNCHRONIZING state and any synchronous replica is not in SYNCHRONIZED state. The monitor state is healthy otherwise. This monitor is a dependency (rollup) monitor.

Knowledge Base article:

Summary

This monitor rolls up the data synchronization state of all availability replicas in the availability group and check whether any availability replica’s synchronization is not operational. The monitor is unhealthy if any of availability replica’s data synchronization state is NOT SYNCHRONIZING. The monitor is healthy if none of availability replica’s data synchronization state is NOT SYNCHRONIZING.

Causes

In this availability group, at least one secondary replica has a NOT SYNCHRONIZING synchronization state and is not receiving data from the primary replica.

Resolutions

Find the availability replica with NOT SYNCHRONIZING state using availability replica monitor state and resolve the issue at the availability replica.

Overridable Parameters

Name

Description

Default Value

Enabled

Enables or disables the workflow.

Yes

Generates Alerts

Defines whether the workflow generates an Alert.

No

Element properties:

TargetMicrosoft.SQLServer.Core.AvailabilityGroup
Parent MonitorMicrosoft.SQLServer.Core.Rollup.AvailabilityGroup.AvailabilityReplicasSynchronizing
AlgorithmWorstOf
Source MonitorMicrosoft.SQLServer.Linux.Monitor.AvailabilityGroupHealth.AvailabilityReplicasSynchronizing
RelationshipMicrosoft.SQLServer.Linux.AvailabilityGroupReferencesAvailabilityGroupHealth
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateFalse
Alert Auto ResolveTrue
RemotableTrue
AccessibilityPublic

Source Code:

<DependencyMonitor ID="Microsoft.SQLServer.Linux.Rollup.AvailabilityGroup.AvailabilityReplicasSynchronizing" Accessibility="Public" Enabled="true" Target="SqlCoreLib!Microsoft.SQLServer.Core.AvailabilityGroup" ParentMonitorID="SqlCoreLib!Microsoft.SQLServer.Core.Rollup.AvailabilityGroup.AvailabilityReplicasSynchronizing" Remotable="true" Priority="Normal" RelationshipType="SqlDiscL!Microsoft.SQLServer.Linux.AvailabilityGroupReferencesAvailabilityGroupHealth" MemberMonitor="Microsoft.SQLServer.Linux.Monitor.AvailabilityGroupHealth.AvailabilityReplicasSynchronizing">
<Category>AvailabilityHealth</Category>
<Algorithm>WorstOf</Algorithm>
<MemberUnAvailable>Warning</MemberUnAvailable>
</DependencyMonitor>