Tips for Troubleshooting Your Kubernetes Pods by NetCom Learning

Tips for Troubleshooting Your Kubernetes Pods Anuj Kalra NetCom Learning

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AGENDA Introduction to Kubernetes Features of Kubernetes Introduction to Containers Features of Containers Pods overview Why Pods fail In Kubernetes ? 5 Tips to resolve Kubernetes Pods failure

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INTRODUCTION TO KUBERNETES Kubernetes is a powerful open-source system, developed by google, for managing containerized applications in a clustered environment. It aims to provide better ways of managing related, distributed components and services across varied infrastructure. Kubernetes is an open-source container management tool which automates container deployment, container scaling, and descaling and container load balancing. Kubernetes can group ‘n’ number of containers into one logical unit for managing and deploying them easily. It works brilliantly with all cloud Kubernetes is an open-source platform that manages docker containers in the form of a cluster. Along with the automated deployment and scaling of containers, it provides healing by automatically restarting failed containers and rescheduling them when their hosts die.

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KEY FEATURES OF KUBERNETES • Extensibility • Portability

• Self-healing • Load balancing

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INTRODUCTION TO CONTAINERS Containers are an executable unit of software wherein application code is packaged alongside its libraries and conditions, in like manner ways so it very well may be run anyplace, regardless of whether it be on work area, customary IT, or the cloud. Containers are far more lightweight they share the OS kernel, start much faster, and use a fraction of the memory compared to booting an entire OS. There are many container formats available. Docker is a popular, open-source container format that is supported on Google Cloud Platform and by Google Kubernetes Engine.

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KEY FEATURES OF CONTAINERS Containers are a smooth way to build, test and deploy applications on multiple environments from a developer to on data center and even the cloud. The Key Features Of Containers are :

Light weight

Improves utilization

Portable

Support modern development

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PODS OVERVIEW A Pod is a group of one or more application containers and includes shared storage IP address and information about how to run them. Pods are the smallest, most basic deployable objects in Kubernetes. A Pod represents a single instance of a running process in your cluster. Pods contain one or more than one container such as Docker containers. When a Pod runs multiple containers, the containers are managed as a single entity and share the Pod's resources. Generally, running multiple containers in a single Pod is an advanced use case.

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WHY PODS FAIL IN KUBERNETES ? • Wrong image used for POD • Invalid inputs are missing application runtime config map or secrets • Exceeding resource limits • Due to insufficient resources • Unexpected changes in the application’s • Kubernetes misconfiguration or timeout

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5 TIPS TO RESOLVE KUBERNETES PODS FAILURE • Observe Pods • Check events related to Pods

• Check your logs • Run “sh”, “bash”, or “ash” directly in the Podsa • Show cluster-level events

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