c9c6901303
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Make IsConnectionReset work with more error implementations. **What this PR does / why we need it**: This fixes the code to correctly navigate error hierarchy, and actually work. **Which issue(s) this PR fixes** An improvement for #55860 **Special notes for your reviewer**: Integration-testing this code is somewhat hard. What I did to reproduce this condition reliably was: 1. use iptables to let the TCP handshake packets through but reject payload-carrying packets with: ``` sudo iptables -t raw -I PREROUTING -d localhost --protocol tcp --dport 443 -j NOTRACK sudo iptables -t filter -I INPUT -d localhost --protocol tcp --dport 443 -m string --algo bm --string http -j REJECT --reject-with tcp-reset ``` 2. start a dummy server with: `nc -l -4 localhost 443` 3. make the client issue a GET on localhost:443 Then I added instrumentation to the place in k8s.io/client-go/rest/request.go which calls this code, to discover the actual error hierarchy. I think another way to test this would be to run a dummy server which would listen() on a socket, accept() and then close() the incoming connection straight away. **Release note**: ```release-note Correctly handle transient connection reset errors on GET requests from client library. ``` |
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Kubernetes
Kubernetes is an open source system for managing containerized applications across multiple hosts, providing basic mechanisms for deployment, maintenance, and scaling of applications.
Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.
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