Azure AKS 监控 - 自定义仪表板资源

Question

我正在尝试为 AKS 群集创建包含一些特定数据的自定义仪表板。我想做的是组装一个仪表板，其中包含每个选定控制器和节点的 RAM 和 CPU 使用率图表，以及每个 pod 的重启次数（如果可能）。如何使用控制器的平均资源使用情况创建自定义图表？

Answer 1

您可以在 Azure 门户中单击 AKS 群集刀片左侧的“日志”链接（确保通过先单击“见解”启用见解 - 如果没问题，您将看到接近于否则，您会看到入职说明）。

使用以下查询绘制给定控制器中所有容器的 CPU 利用率（第 95 %-tile）图表：

let endDateTime = now();
let startDateTime = ago(14d);
let trendBinSize = 1d;
let capacityCounterName = 'cpuLimitNanoCores';
let usageCounterName = 'cpuUsageNanoCores';
let clusterName = 'coin-test-i';
let controllerName = 'kube-svc-redirect';
KubePodInventory
| where TimeGenerated < endDateTime
| where TimeGenerated >= startDateTime
| where ClusterName == clusterName
| where ControllerName == controllerName
| extend InstanceName = strcat(ClusterId, '/', ContainerName), 
         ContainerName = strcat(controllerName, '/', tostring(split(ContainerName, '/')[1]))
| distinct Computer, InstanceName, ContainerName
| join hint.strategy=shuffle (
    Perf
    | where TimeGenerated < endDateTime
    | where TimeGenerated >= startDateTime
    | where ObjectName == 'K8SContainer'
    | where CounterName == capacityCounterName
    | summarize LimitValue = max(CounterValue) by Computer, InstanceName, bin(TimeGenerated, trendBinSize)
    | project Computer, InstanceName, LimitStartTime = TimeGenerated, LimitEndTime = TimeGenerated + trendBinSize, LimitValue
) on Computer, InstanceName
| join kind=inner hint.strategy=shuffle (
    Perf
    | where TimeGenerated < endDateTime + trendBinSize
    | where TimeGenerated >= startDateTime - trendBinSize
    | where ObjectName == 'K8SContainer'
    | where CounterName == usageCounterName
    | project Computer, InstanceName, UsageValue = CounterValue, TimeGenerated
) on Computer, InstanceName
| where TimeGenerated >= LimitStartTime and TimeGenerated < LimitEndTime
| project Computer, ContainerName, TimeGenerated, UsagePercent = UsageValue * 100.0 / LimitValue
| summarize P95 = percentile(UsagePercent, 95) by bin(TimeGenerated, trendBinSize) , ContainerName
| render timechart

将集群名称和控制器名称替换为您想要的名称。您还可以使用开始/结束时间参数、bin 大小、max/min/avg 代替 95th %-tile。

对于内存指标，请将指标名称替换为：

let capacityCounterName = 'memoryLimitBytes';
let usageCounterName = 'memoryRssBytes';