Intermittent Latency Due to Overloaded Network Interface

Intermittent network latency occurred due to an overloaded network interface on a single node.

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What Happened

One node had high network traffic and was not able to handle the load, causing latency spikes.

Diagnosis Steps

1Checked node resource utilization and identified that the network interface was saturated.
2Verified that the traffic was not being distributed evenly across the nodes.

Root Cause

Imbalanced network traffic distribution across the node pool.

Fix/Workaround

• Rebalanced the pod distribution across nodes to reduce load on the overloaded network interface.
• Increased network interface resources on the affected node.

Lessons Learned

Proper traffic distribution is key to maintaining low latency.

How to Avoid

1Use autoscaling to dynamically adjust the number of nodes based on traffic load.
2Monitor network interface usage closely and optimize traffic distribution.

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