Monitoring Kubernetes pods
You've got your Kubernetes data into Splunk Observability Cloud, and now you're not sure what to do next. There are seemingly limitless ways to use Splunk software to achieve different use cases, and you need to start learning how to get value from the platform.
Some questions you might have about using Splunk Infrastructure Monitoring to monitor your Kubernetes environment include:
- How can I identify which pods are failing or stuck in a pending state?
- How can I ensure that the number of running instances matches what I expect?
- How do I know if appropriate resource limits have been applied, and if any pods are exceeding those limits?
This article is part of the Splunk Use Case Explorer for Observability, which is designed to help you identify and implement prescriptive use cases that drive incremental business value. It explains the solution using a fictitious example company, called CSCorp, that hosts a cloud native application called Online Boutique. In the AIOps lifecycle described in the Use Case Explorer, this article is part of Infrastructure monitoring.
How to use Splunk software for this use case
Splunk experts have recorded five-minute videos on some high-value foundational use cases. Each video is self-contained, so you can pick the capabilities most relevant to you and your organization.
We recommend that new users complete at least two or three of these capabilities to get comfortable with the Splunk Observability Cloud platform and its basic functionality.
By completing these capabilities, you will learn by doing and acquire the following skills:
- Interpret the built-in dashboards / Infrastructure Navigator to understand your Kubernetes environment
- Build custom detectors / visualizations
- Set-up custom alerts and notifications
- Interpret detectors, visualizations, and dashboards to complete basic troubleshooting
Video 1 - Detect Kubernetes nodes running out of resources or pods that are in a pending phase
In organizations that use the Kubernetes container management platform, it is common for nodes to run out of resources, rendering your applications unable to scale. It is imperative that Kubernetes nodes are monitored carefully to ensure you can take action quickly when this happens. In this video, you'll learn how to create a detector in Splunk Infrastructure Monitoring that monitors for this situation.
Video 2 - How to monitor CPU utilization for no-limit pod configuration situations
In the first video, you configured your Splunk Infrastructure Monitoring detector for pods that are in a pending state due to running out of resources. In a situation when pod limits are not set, it can consume more CPU usage than intended. In this video, you'll learn how to monitor node CPU usage in that situation so you can prevent impact to your customers.
Video 3 - How to create alerting – Splunk On-Call, Email, Slack
When a pending state is detected, every second counts - you'll need to quickly alert the Kubernetes support staff who can resolve this incident. Each organization is unique in how it alerts its support team members, whether that happens over email, Slack, or Splunk On-Call. In this video, you'll learn how to configure alerting your staff for all of these platforms so your support team can take action straight away.
Video 4 - How to review pod status in the Kubernetes navigator: running vs desired # of pods, pods in pending status, failed pods
In this video for Kubernetes administrators you'll learn how to easily view pod status so that you can quickly and easily troubleshoot and reduce your Mean-Time-To-Repair (MTTR).
Still having trouble? Splunk has many resources available to help get you back on track.
- Splunk OnDemand Services: Use these credit-based services for direct access to Splunk technical consultants with a variety of technical services from a pre-defined catalog. Most customers have OnDemand Services per their license support plan. Engage the ODS team at OnDemand-Inquires@splunk.
com if you require assistance.
- Splunk Answers: Ask your question to the Splunk Community, which has provided over 50,000 user solutions to date.
- Splunk Customer Support: Contact Splunk to discuss your environment and receive customer support.
- Splunk Observability Training Courses: Comprehensive Splunk training to fully unlock the power of Splunk Observability Cloud. We especially recommend Kubernetes monitoring in Splunk IM.