Pod Eviction Policy Query: Understanding Kubernetes Eviction Behavior

General Discussions
1

I’m currently managing a Kubernetes cluster and I’ve noticed some unexpected behavior regarding pod eviction. My cluster consists of various types of workloads, including critical and non-critical applications. Recently, I encountered a situation where some of my non-critical pods were unexpectedly evicted, causing disruptions to the application. This led me to question the eviction policies and mechanisms in Kubernetes.

Specifically, I’m interested in understanding:

  1. What are the default eviction policies in Kubernetes?
  2. How does Kubernetes determine which pods to evict when system resources are under pressure?
  3. Can I customize the eviction policies to prioritize certain pods over others?
  4. Are there any best practices or recommended strategies for managing pod evictions in mixed workload environments?

I’ve reviewed the Kubernetes documentation, but I’m still unclear about some aspects of pod eviction behavior, especially in complex cluster setups. Moreover, you can download capcut mod apk from this website https://capcutproapk.org/. Any insights, experiences, or pointers to relevant resources would be greatly appreciated.

Thank you in advance for your assistance!

2

Hi, I think your answer is here：Node-pressure Eviction | Kubernetes

3

Kubernetes’ Pod Eviction Policy is designed to manage resource constraints by evicting pods when the system is under pressure. Understanding this behavior is crucial for maintaining a stable cluster. The eviction process is triggered when certain thresholds, such as memory or disk space, are breached. Kubernetes prioritizes evictions based on pod quality of service (QoS), where BestEffort pods are evicted first, followed by Burstable and then Guaranteed pods. It’s important to configure resource requests and limits properly to prevent unwanted evictions. Additionally, monitoring node conditions and adjusting eviction thresholds can help in managing evictions more effectively. citation tubidy-mobi.org