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Scenario #60
Cluster Management
K8s v1.24, AWS EKS
Excessive Control Plane Resource Usage During Pod Scheduling
Control plane resources were excessively utilized during pod scheduling, leading to slow deployments.
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What Happened
Pod scheduling took significantly longer than expected due to excessive resource consumption in the control plane.
Diagnosis Steps
- 1Monitored control plane metrics and found high CPU and memory usage.
- 2Analyzed scheduler logs to identify resource bottlenecks.
Root Cause
The default scheduler was not optimized for high resource consumption, causing delays in pod scheduling.
Fix/Workaround
• Optimized the scheduler configuration to reduce resource usage.
• Split large workloads into smaller ones to improve scheduling efficiency.Lessons Learned
Efficient scheduler configuration is essential for handling large-scale deployments.
How to Avoid
- 1Optimize scheduler settings for large clusters.
- 2Use scheduler features like affinity and anti-affinity to control pod placement.