Top 3 Kubernetes Weak Spots affecting your Availability

The blog post explores three critical areas in Kubernetes that can impact the availability and resilience of services running on the platform: Single Pod Replica Count, Missing Liveness and Readiness Probes, and Missing Resource Limits. It highlights the importance of setting an appropriate number of pod replicas to avoid system failures, implementing liveness and readiness probes to ensure services can recover from failures and are ready to handle traffic, and defining resource limits to prevent excessive CPU or memory usage from affecting other pods. To validate the robustness of a Kubernetes cluster against these weaknesses, the post suggests using Chaos Engineering to simulate turbulent conditions and assess the system's response. An example experiment is demonstrated using a "fashion-bestseller" service to illustrate the effects of increased CPU load and the necessity of setting resource limits to mitigate performance issues.