Kusto Queries on AKS Clusters

Kusto query language can be used to get insights into Azure Kubernetes Service (AKS) clusters. Container insights collects data from AKS clusters and forwards it to Log Analytics workspace, if enabled for a cluster. This data is available for querying in the Azure Monitor. Here is an example of how you can query the pods not in running state in specific namespaces. 

KubePodInventory 
| where Namespace in ("dv","test","prod") 
| where ContainerStatus != "Running" 
| where ContainerStatusReason !in ("", "Completed") 
| distinct Namespace, Name 
Run 
Time range : Last 24 hours 
E] Save v 
14 Share v 
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KubePodInventory 
I where Namespaceän ('dv', 'test', 'prod') 
I where ContainerStatusu != 
"Running" 
I where ContainerStatusReasone ! in ('I", "Completed") 
I distinct Namespace, Name 
Results Chart 
@ Display time (UTC+OO:OO) v 
Columns v 
Completed. Showing results from the last 24 hours. 
> 
Namespace 
dv 
prod 
Y Name Y 
app2 
app2

The following query includes the name of the AKS cluster and renders the output as a stacked bar chart.

KubePodInventory 
| where Namespace in ("dv","test","prod") 
| where ContainerStatus != "Running" 
| where ContainerStatusReason !in ("", "Completed") 
| distinct ClusterName, Namespace, Name 
| summarize dcount(Name) by ClusterName, Namespace 
| render columnchart kind=stacked100 
Run 
Time range : Last 24 hours 
E] Save v 
14 Share v 
+ New alert rule 
Export v 
Pin to dashboard 
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KubePodInventory 
I where Namespace in ('dv', 'test', 'prod') 
I where ContainerStatus ! = 
"Running" 
I where ContainerStatusReason ! in ('I", "Completed") 
I distinct ClusterName, Namespace, Name 
summarize dcount(Name) by ClusterName, Namespace 
render columnchart kind=stacked100 
Results 
Chart 
@ Display time (UTC+OO:OO) v 
Completed. Showing results from the last 24 hours. 
00:00.7 
2 records 
z 
o 
100 
50 
dv 
O 
aksdemol 
ClusterName 
prod 
Activate Windows 
Go to Settings to activate Windows.

You can include multiple AKS clusters in the scope in which this query is executed by clicking on [Select scope] hyperlink.


Create an Azure Dashboard panel with this output by clicking on [Pin to dashboard] button.

AIG Demo v/ 
Private dashboard 
New dashboard v 
Auto refresh : Off 
Analytics 
rq-aksdashboard 
CD Refresh Full screen 
UTC Time : Past 24 hours 
aksdemol 
test 
62 Edit Share 
Add filter 
ClusterName 
Download 
aksdem02 
Clone 
e Assign 
z 
o 
100 
75 
50 
25 
dv 
prod

You can also execute this Kusto query directly using powershell.

$workspaceName = "DefaultWorkspace-6637b095-xxxx-xxxx-xxxx-xxxxxxxxxxx-EUS" 
$workspaceRG = "defaultresourcegroup-eus" 
$WorkspaceID = (Get-AzOperationalInsightsWorkspace -Name $workspaceName -ResourceGroupName $workspaceRG).CustomerID 

$query = 'KubePodInventory | where Namespace in ("dv","test","prod") | where ContainerStatus != "Running" | where ContainerStatusReason !in ("", "Completed") | distinct ClusterName, Namespace, Name | summarize dcount(Name) by ClusterName, Namespace' 

$result = Invoke-AzOperationalInsightsQuery -WorkspaceId $WorkspaceID -Query $query -Timespan (New-TimeSpan -days 1) 
$result.results 

This allows you to include the results of your custom Kusto queries in any reports you might run using Azure Automation Runbooks.

PowerShell v Q) 
PS /home/ash> 
PS /home/ash> 
PS /home/ash> 
Q 
o 
PS /home/ash> $workspaceName 
"DefaultWorkspace-6637b095 
PS / home/ash> $workspaceRG 
"defaultresourcegroup-eus" 
PS / home/ash> $WorkspaceID 
(Get-AzOperationa11nsightsWorkspace 
-Name $workspaceName -ResourceGroupName $workspaceRG) . CustomerID 
'KubePodInventory I where Namespace in ("dv" , "test" , "prod") I where ContainerStatus ! = 
"Running" I where Container 
PS / home/ash> $query 
I distinct ClusterName, Namespace, Name I summarize dcount(Name) by ClusterName, Namespace' 
PS / home/ash> $result 
Invoke-AzOperationa11nsightsQuery -Workspaceld $WorkspaceID -Query $query -Timespan (New-TimeSpan 
-days 3) 
PS / home/ash> $result.results 
ClusterName Namespace dcount_Name 
aksdemol 
aksdemol 
aksdem02 
dv 
prod 
test 
1 
1 
1 
PS / home/ash> 
PS / home/ash> 
PS /home/ash>

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