包含 ADX 和 ARG 的範例記錄搜尋提醒查詢
記錄搜尋警示規則會使用Log Analytics查詢來評估設定頻率的記錄,來監視資源。 您可以在記錄搜尋警示規則查詢中包含來自 Azure 數據總管和 Azure Resource Graph 的數據。
本文提供使用 Azure 數據總管和 Azure Resource Graph 的記錄搜尋警示規則查詢範例。 如需建立記錄搜尋警示規則的詳細資訊,請參閱 建立記錄搜尋警示規則。
檢查虛擬機健康情況的查詢
此查詢會尋找在過去 2 分鐘內標示為沒有活動訊號的虛擬機。
arg("").Resources
| where type == "microsoft.compute/virtualmachines"
| summarize LastCall = max(case(isnull(TimeGenerated), make_datetime(1970, 1, 1), TimeGenerated)) by name, id
| extend SystemDown = case(LastCall < ago(2m), 1, 0)
| where SystemDown == 1
此查詢會尋找標示為「重要」的虛擬機,其活動訊號超過24小時前,但在過去2分鐘內沒有活動訊號。
{
arg("").Resources
| where type == "microsoft.compute/virtualmachines"
| where tags.BusinessCriticality =~ 'critical' and subscriptionId == '123-456-123-456'
| join kind=leftouter (
Heartbeat
| where TimeGenerated > ago(24h)
)
on $left.name == $right.Resource
| summarize LastCall = max(case(isnull(TimeGenerated), make_datetime(1970, 1, 1), TimeGenerated)) by name, id
| extend SystemDown = case(LastCall < ago(2m), 1, 0)
| where SystemDown == 1
}
查詢,以篩選需要監視的虛擬機
{
let RuleGroupTags = dynamic(['Linux']);
Perf | where ObjectName == 'Processor' and CounterName == '% Idle Time' and (InstanceName in ('_Total,'total'))
| extend CpuUtilisation = (100 - CounterValue)
| join kind=inner hint.remote=left (arg("").Resources
| where type =~ 'Microsoft.Compute/virtualMachines'
| project _ResourceId=tolower(id), tags) on _ResourceId
| project-away _ResourceId1
| where (tostring(tags.monitorRuleGroup) in (RuleGroupTags))
}
查詢,尋找憑證將在 30 天內到期的資源
{
arg("").Resources
| where type == "microsoft.web/certificates"
| extend ExpirationDate = todatetime(properties.expirationDate)
| project ExpirationDate, name, resourceGroup, properties.expirationDate
| where ExpirationDate < now() + 30d
| order by ExpirationDate asc
}
在訂用帳戶中建立新資源時警示的查詢
{
arg("").resourcechanges
| extend changeTime = todatetime(properties.changeAttributes.timestamp),
changeType = tostring(properties.changeType),targetResourceType = tostring(properties.targetResourceType),
changedBy = tostring(properties.changeAttributes.changedBy),
createdResource = tostring(properties.targetResourceId)
| where changeType == "Create" and changeTime <ago(1h)
| project changeTime,createdResource,changedBy
}