Kubernetesを監視する 🔗
Splunk Observability Cloud で Kubernetes のメトリクスを監視できます。Splunk Observability Cloud は、Splunk Distribution of OpenTelemetry Collector for Kubernetes を使用して、堅牢なInfrastructure Monitoring 機能を提供します。詳細については、Splunk Distribution of the OpenTelemetry Collector の利用開始 を参照してください。
前提条件 🔗
To start monitoring Kubernetes resources, you must:
管理者認証でログインします。
階層マップ 🔗
注釈
The hierarchy map is only available on the Kubernetes nodes, pods, and containers navigators.
Monitor your Kubernetes infrastructure with an interactive hierarchical map that displays the child resources associated with a selected Kubernetes instance. You can select elements in the map to drill down into them, or use the filter to explore your data. The level of detail shown on the map is dynamic and depends on the number of elements shown.
To navigate to the hierarchy map:
From the Splunk Observability Cloud main menu, select Infrastructure, then Kubernetes.
Select the Kubernetes nodes, pods, or containers navigator.
デフォルトではテーブルビューが表示されます。テーブルからインスタンスを選択します。
Expand the Hierarchy Map.
Nodes, pods, and containers are colored by health and status, as reported by Kubernetes:
ノードは条件によって色分けされています：
Node Ready、Memory Pressure、PID Pressure、Disk Pressure、Network Unavailable、Out of Diskポッドは相によって色分けされています：
Running、Pending、Succeeded、Failed、Unknownコンテナはステータスごとに色分けされています：
Ready、Not Ready、Unknown
Investigate instances in the hierarchy map 🔗
Breadcrumb navigation: Switch to different instances and jump across entity levels using the breadcrumb navigation bar.
Hover: Get more information about an instance, including its status or phase, by hovering over that instance.
Select and zoom: Drill down into an instance and change the zoom level of the map, if applicable, by selecting the instance.
Filter: Filter the map by any available metadata in your Kubernetes data, such as a namespace, a workload, or any other key-value pair. When you apply a filter, the map highlights instances that match the filter. You can still hover over the dimmed instances to view details about them.
Troubleshoot performance with the analyzer 🔗
注釈
The analyzer is only available on the Kubernetes nodes, pods, and containers navigators.
You can access the Kubernetes analyzer through the K8s analyzer tab. The analyzer helps you troubleshoot Kubernetes problems at scale by highlighting Kubernetes instances that are in a bad state, such as nodes that are not ready. The analyzer produces theories about what those instances might have in common, such as that all of the instances are running the same workload or all instances are located in the same AWS region. Select a finding in the analyzer to filter the map.
The analyzer displays suggested filters for the elements selected in the table or heat map view. Select links in the analyzer to add filters to the table or heat map view and explore conditions across your entire Kubernetes environment.
The analyzer uses AI-driven insights to examine potential patterns between nodes, pods, or containers. The trouble indicators are:
Pods that are in pending status
Pods that are in failed status
Pods with unknown condition
Containers with high restart counts
Nodes not ready
Nodes with unknown condition
Nodes experiencing high CPU
Nodes experiencing high memory
The analyzer displays overrepresented metrics properties for known conditions, such as pods in pending status, pods in failed status, and so on. You can use properties that are highly correlated with these conditions to filter the table or heat map. You can explore data about each of those elements in the navigator using context-sensitive dashboards. This enables you to identify the underlying patterns noticeable on the filtered map that might be correlated with Kubernetes issues. For example, if all failed pods are in certain types of clusters, the analyzer provides suggested paths to follow to troubleshoot such issues.
次のステップ 🔗
また、以下の表で説明するように、Kubernetesクラスタに関連するデータをエクスポートして監視することもできます。
でデータを取得する |
を監視する |
説明 |
|---|---|---|
Kubernetesクラスタが稼働しているクラウドサービスプロバイダーに接続します (ある場合)。 |
||
Kubernetesクラスタで実行されているアプリケーションからメトリクスとスパンを収集します。 |