Debian docker image in Google Kubernetes Engine fails
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Problem
Name resolution on your pods from Debian-based images may intermittently fail. For example, out of 100 name resolutions for your internal host names, there are 1-3 failures.
Error message says:
Temporary failure in name resolution.
Environment
- Docker image
- kube-dns configured to look up your internal host names via your own DNS servers:
apiVersion: v1
kind: ConfigMap
metadata:
name: kube-dns
namespace: kube-system
data:
stubDomains: |
{"my.corp": ["10.17.128.10","10.17.128.11","10.17.128.12"]}
- Google Kubernetes Engine version 1.9.x
- TCP Dump shows that both A and AAAA requests are done in parallel but for your domain only the AAAA request receives a reply.
Solution
Use the inetutils-ping debian package instead of the standard iputils-ping.
Cause
inetutils-ping supports only IPv4.
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Last updated 2024-10-10 UTC.
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