Kubernetes OOM and CPU Throttling
Blog post from Sysdig
In cloud applications utilizing Kubernetes, managing Out of Memory (OOM) errors and CPU throttling is crucial to resource efficiency and cost control. Both memory and CPU resources in Kubernetes can be managed through setting limits and requests, which help prevent resource starvation and optimize cloud expenses. OOM errors occur when a container exceeds its allocated memory and is terminated, while CPU throttling happens when a container's CPU usage approaches its limit, leading to slowed processing. Monitoring these metrics is essential, with tools like Prometheus and cadvisor providing insights into resource usage and potential issues. Best practices include setting realistic limits to avoid unwanted throttling or process termination and using priority classes to protect vital pods from preemption. Sysdig Monitor offers solutions to optimize resource use, potentially reducing waste by up to 40%, and provides dashboards for identifying underutilized resources in Kubernetes environments.