Help Center> Cloud Container Engine> Best Practices> Networking> CoreDNS Configuration Optimization> Client> Avoiding Occasional DNS Resolution Timeout Caused by IPVS Defects

Updated on 2024-07-04 GMT+08:00

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Avoiding Occasional DNS Resolution Timeout Caused by IPVS Defects

When the kube-proxy uses IPVS load balancing, you may encounter DNS resolution timeout occasionally during CoreDNS scale-in or restart. This problem is caused by a Linux kernel defect. For details, see https://github.com/torvalds/linux/commit/35dfb013149f74c2be1ff9c78f14e6a3cd1539d1.

You can use NodeLocal DNSCache to minimize the impact of IPVS defects. For details, see Using NodeLocal DNSCache to Improve DNS Performance.

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