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Queries for the Event table

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For information on using these queries in the Azure portal, see Log Analytics tutorial. For the REST API, see Query.

Memory usage percentage

For your cluster view avg node memory usage percentage.

//Select your log analytics workspace and replace enter cluster ID with your cluster arm ID
//Unit for MemoryUsage is in percentage(%),TotalMemory, and UsedMemory are in bytes
//Please use Nodename to set alert for each node
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3000"
| extend ClusterData = parse_xml(EventData)
| extend ClusterName = tostring(ClusterData.DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(ClusterData.DataItem.UserData.EventData["ArmId"])
| where ClusterArmId =~ 'enter cluster ID'
| summarize arg_max(TimeGenerated, RenderedDescription)
| extend servers_information = parse_json(RenderedDescription).m_servers
| mv-expand servers_information
| extend Nodename = tostring(servers_information.m_name)
| extend TotalMemory = todecimal(servers_information.m_totalPhysicalMemoryInBytes)
| extend UsedMemory = iff(TotalMemory == 0.0, todecimal(0.0), todecimal(servers_information.m_usedPhysicalMemoryInBytes))
| extend MemoryUsage = iff(TotalMemory == 0.0, todecimal(0.0), todecimal(round(UsedMemory / TotalMemory * 100, 0)))

Avg node CPU usage percentage

For your cluster view avg node CPU usage percentage.

//Select your log analytics workspace and replace enter cluster ID with your cluster arm ID
//Unit for UsedCpuPercentage is in percentage(%)
//Please use Nodename to set alert for each node
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3000"
| extend ClusterData = parse_xml(EventData)
| extend ClusterName = tostring(ClusterData.DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(ClusterData.DataItem.UserData.EventData["ArmId"])
| where ClusterArmId =~ 'enter cluster ID'
| summarize arg_max(TimeGenerated, RenderedDescription)
| extend servers_information = parse_json(RenderedDescription).m_servers
| mv-expand servers_information
| extend Nodename = tostring(servers_information.m_name)
| extend UsedCpuPercentage = toint(servers_information.m_totalProcessorsUsedPercentage)

Virtual machines failed

For your cluster, view failed virtual machines in a cluster.

//Select your log analytics workspace and replace enter cluster ID with your cluster arm ID
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3003"
| extend ClusterName = tostring(parse_xml(EventData).DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(parse_xml(EventData).DataItem.UserData.EventData["ArmId"])
| where ClusterArmId =~ 'enter cluster ID'
| summarize arg_max(TimeGenerated, RenderedDescription)
| extend description = parse_json(RenderedDescription)
| extend VmsFailed = toint(description.m_totalVmsFailed)

Total virtual machines in a cluster.

For your cluster, view total, running, stopped and failed virtual machines in a cluster

//Select your log analytics workspace and replace enter cluster ID with your cluster arm ID
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3003"
| extend ClusterName = tostring(parse_xml(EventData).DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(parse_xml(EventData).DataItem.UserData.EventData["ArmId"])
| where ClusterArmId =~ 'enter cluster ID'
| summarize arg_max(TimeGenerated, RenderedDescription)
| extend description = parse_json(RenderedDescription)
| extend VmsStopped = toint(description.m_totalVmsStopped)

Available volume capacity in a cluster.

View available capacity (in Bytes) for a volume in a cluster

//Select your log analytics workspace and replace enter cluster ID with your cluster arm ID 
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3002"
| extend ClusterData = parse_xml(EventData)
| extend ClusterName = tostring(ClusterData.DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(ClusterData.DataItem.UserData.EventData["ArmId"])
| where ClusterArmId =~ 'enter cluster ID'
| summarize arg_max(TimeGenerated, RenderedDescription)
| extend volumes_information = parse_json(RenderedDescription).VolumeList
| mv-expand volumes_information
| extend Volumes = tostring(volumes_information.m_Label)
| extend TotalCap = todecimal(volumes_information.m_Size)
| extend AvailableCap = TotalCap - todecimal(volumes_information.m_SizeUsed)

Volume latency

This query shows the latency for your volumes.

//Select your log analytics workspace and replace enter cluster ID with your cluster arm ID
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3002"
| extend ClusterData = parse_xml(EventData)
| extend ClusterName = tostring(ClusterData.DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(ClusterData.DataItem.UserData.EventData["ArmId"])
| where ClusterArmId =~ 'enter cluster ID'
| summarize arg_max(TimeGenerated, RenderedDescription)
| extend volumes_information = parse_json(RenderedDescription).VolumeList
| mv-expand volumes_information
| extend VolumeName = tostring(volumes_information.m_Label)
| extend Latency = todouble(volumes_information.m_AverageLatency)
| extend Latency = iff(Latency < 0, 0.0, Latency)

Volume IOPS

This query shows the input output operations per second for your volumes in a cluster.

//Select your log analytics workspace and replace enter cluster ID with your cluster arm ID to view IOPS of volumes in a cluster
//Unit for IOPS will be IOPS/s
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3002"
| extend ClusterData = parse_xml(EventData)
| extend ClusterName = tostring(ClusterData.DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(ClusterData.DataItem.UserData.EventData["ArmId"])
| where ClusterArmId =~ 'enter cluster ID'
| summarize arg_max(TimeGenerated, RenderedDescription)
| extend volumes_information = parse_json(RenderedDescription).VolumeList
| mv-expand volumes_information
| extend VolumesName = tostring(volumes_information.m_Label)
| extend Iops = todouble(volumes_information.m_TotalIops)
| extend Iops = iff(Iops < 0, 0.0, Iops)

Volume throughput

This query shows the throughput for your volumes in a cluster.

//Select your log analytics workspace and replace enter cluster ID with your cluster arm ID
//Unit for throughput is B/s
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3002"
| extend ClusterData = parse_xml(EventData)
| extend ClusterName = tostring(ClusterData.DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(ClusterData.DataItem.UserData.EventData["ArmId"])
| where ClusterArmId =~ 'enter cluster ID'
| summarize arg_max(TimeGenerated, RenderedDescription)
| extend volumes_information = parse_json(RenderedDescription).VolumeList
| mv-expand volumes_information
| extend VolumeName = tostring(volumes_information.m_Label)
| extend Throughput = todouble(volumes_information.m_TotalThroughput)
| extend Throughput = iff(Throughput < 0, 0.0, Throughput)

Cluster node down

Get an alert if a node is down within a cluster.

//Select your log analytics workspace and replace clusterarmId1 with your cluster arm ID
//Please split dimensions by clusterarmID and dimension name as faulting resource ID to set up alerts for each node within a cluster. Please check include all future values to get alerts for future dimension names.
Event
| where EventLog =~ "Microsoft-Windows-Health/Operational"
| extend description = parse_json(RenderedDescription)
| extend CorrelationId = tostring(description.CorrelationId)
| join kind=leftsemi (Event
    | where EventLog =~ "Microsoft-Windows-Health/Operational"
    | extend description = parse_json(RenderedDescription)
    | extend ClusterArmId = tostring(description.ArmId)
    //| where ClusterArmId in~ ('clusterarmId1', 'clusterarmId2', 'clusterarmId3')
    | where tostring(description.IsLastMessage) =~ 'true'
    | extend CorrelationId = tostring(description.CorrelationId)
    | summarize arg_max(TimeGenerated, *) by ClusterArmId
    | project CorrelationId)
    on CorrelationId
| extend ClusterArmId = tostring(description.ArmId)
| where tostring(description.Fault.RootObjectType) == 'Microsoft.Health.EntityType.Cluster'
| extend Fault = description.Fault
| extend ShortDescription = split(tostring(Fault.Type), '.')[-1]
| extend Faulttype= Fault.Type
| where Faulttype == "Microsoft.Health.FaultType.Server.Down"
| extend Severity = toint(Fault.Severity)
| extend FaultingResourceType = split(tostring(Fault.ObjectType), '.')[-1]
| extend FaultingResourceId = tostring(Fault.ObjectId)
| extend ReportedTime = datetime_add('Microsecond', tolong(Fault.Timestamp) / 10, make_datetime(1601, 1, 1))
| extend Detail = pack(
    "Severity", iff(Severity == 0, "Healthy", iff(Severity == 1, "Warning", iff(Severity == 2, "Critical", "Unknown"))),
    "Faulting Resource ID", FaultingResourceId,
    "Faulting Resource Type", FaultingResourceType,
    "Faulttype", Faulttype,
    "Reported Time", ReportedTime,
    "Short Description", ShortDescription,
    "Description", tostring(Fault.Description),
    "clusterARMId", tostring(ClusterArmId),
    "Remediation", tostring(Fault.Remediation))
| sort by ReportedTime asc
| limit 100

Memory usage percentage

For your cluster view avg node memory usage percentage.

//Select your log analytics workspace and replace clusterarmId1 with your cluster arm ID
//Unit for MemoryUsage is in percentage(%),TotalMemory, and UsedMemory are in bytes
Event
| where EventLog =~ "Microsoft-Windows-SDDC-Management/Operational" and EventID == "3000"
| extend ClusterData = parse_xml(EventData)
| extend ClusterName = tostring(ClusterData.DataItem.UserData.EventData["ClusterName"])
| extend ClusterArmId = tostring(ClusterData.DataItem.UserData.EventData["ArmId"])
//| where ClusterArmId in~ ('clusterarmId1', 'clusterarmId2', 'clusterarmId3')
| summarize arg_max(TimeGenerated, *) by ClusterArmId
| extend servers_information = parse_json(RenderedDescription).m_servers
| mv-expand servers_information
| extend Nodename = tostring(servers_information.m_name)
| extend TotalMemory = todecimal(servers_information.m_totalPhysicalMemoryInBytes)
| extend UsedMemory = iff(TotalMemory == 0.0, todecimal(0.0), todecimal(servers_information.m_usedPhysicalMemoryInBytes))
| extend MemoryUsage = iff(TotalMemory == 0.0, todecimal(0.0), todecimal(round(UsedMemory / TotalMemory * 100, 0)))
| extend MemoryUsageint = toint(MemoryUsage)
| where Nodename != ""
| limit 100

Ingestion latency (end-to-end) timechart - Event table

Chart the latency of ingestion to the Event table in the last 1 day.

Event
| where TimeGenerated > ago(1d)
| project TimeGenerated, IngestionDurationSeconds = (ingestion_time()-TimeGenerated)/1s
| render timechart title = "Ingestion latency: Event table"

Show the trend of a selected event

Chart how many times an event was reported along the last day.

// To create an alert for this query, click '+ New alert rule'
Event
| where EventID == 44 // this ID indicates Windows Update started downloading an update
| summarize count() by bin(TimeGenerated, 1h), Computer, _ResourceId // bin is used to set the time grain to 1 hour
| render barchart

Error event on computer missing security co critical update

Error events for machines that are missing critical or security required updates.

// To create an alert for this query, click '+ New alert rule'
Event
| where EventLevelName == "error"
    | join kind=inner (Update |where (Classification == "Security Updates" or Classification == "Critical Updates") and UpdateState == "Needed" and Optional == "false" | distinct Computer) on Computer 
    | sort by TimeGenerated desc

All Events in the past hour

All Events in the past hour.

Event
| where TimeGenerated > ago(1h)
| sort by TimeGenerated desc

Events started

Events started by event ID.

Event
| where RenderedDescription contains "started" 
| summarize count() by EventID

Events by event source

Events by event source.

Event
| summarize count() by Source

Events by event ID

Top 10 events by event ID.

Event 
| summarize count() by EventID
| top 10 by count_

Warning events

Warning events sortd by time.

Event 
| where EventLevelName == "warning" 
| sort by TimeGenerated desc

Count of warning events

Count of warning events by event ID.

Event 
| where EventLevelName == "warning" 
| summarize count() by EventID

Events in OM between 2000 to 3000

Operation manger events with IDs in range of 2000 to 3000.

Event 
| where EventLog == "Operations Manager" and (EventID >= 2000 and EventID <= 3000) 
| sort by TimeGenerated desc

Windows Fireawall policy settings

Windows Fireawall policy settings changed.

Event
| where EventLog == "Microsoft-Windows-Windows Firewall With Advanced Security/Firewall" and EventID == 2008 
| sort by TimeGenerated desc

Windows Fireawall policy settings changed by machines

Windows Fireawall policy settings changed by machines.

Event 
| where EventLog == "Microsoft-Windows-Windows Firewall With Advanced Security/Firewall" and EventID == 2008 
| summarize count() by Computer 
| limit 10000