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Scenario #433
Scaling & Load
Kubernetes v1.21, Azure AKS
Cross-Cluster Autoscaling Failures
Autoscaling failed across clusters due to inconsistent resource availability between regions.
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What Happened
Horizontal scaling issues arose when pods scaled across regions, leading to resource exhaustion.
Diagnosis Steps
- 1Checked cross-cluster communication and found uneven resource distribution.
- 2Found that scaling was triggered in one region but failed to scale in others.
Root Cause
Resource discrepancies across regions caused scaling failures.
Fix/Workaround
• Adjusted resource allocation policies to account for cross-cluster scaling.
• Ensured consistent resource availability across regions.Lessons Learned
Cross-region autoscaling requires careful resource management.
How to Avoid
- 1Regularly monitor resources across clusters.
- 2Use a global view for autoscaling decisions.