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Kubernetes DNS
This is the repository for Kubernetes DNS(kube-dns and nodelocaldns). Images kube-dns sidecar dnsmasq node-cache Buildingmake targets: target description all, build build all binaries test run unit tests containers build the containers images-clean clear image build artifacts from workdir push push containers to the registry help this help message version show package version {build,containers,push}-ARCH do action for specific ARCH all-{build,containers,push} do action for all ARCH only-push-BINARY push just BINARY Setting VERBOSE=1 will show additional build logging. Setting VERSION will override the container version tag. Vulnerability patchingVulnerability patches are mainly for debian-base or debian-iptables images. They can be updated to the latest by modifying rules.mk and dnsmasq Makefile. Example PR. Once the PR has merged, a new release tag should be cut. The rest of the release process is described below. Release processFollow these steps to make changes and release a new binary. Make the necessary code changes and create a PR. Build and test locally (make images-clean; make build; make containers; make test). To build just the node-cache container, use make containers CONTAINER_BINARIES=node-cache. The same steps are executed via the presubmit script presubmits.sh which is run by the test-infra prow job. Merge the PR. Cut a new release tag. We use semantic versioning to name releases. Example: git tag -a 1.21.4 -m "Build images using golang 1.17." git push upstream 1.21.4 Wait for container images to be pushed via cloudbuild yaml. This will be done automatically by k8s.io/test-infra/.../k8s-staging-dns.yaml. A manual cloud build can be submitted via gcloud builds submit --config cloudbuild.yaml, but this requires owner permissions in k8s-staging-dns project. The automated job pushes images for all architectures and makes them available in gcr.io/k8s-staging-dns. Status for build jobs can be checked at - https://k8s-testgrid.appspot.com/sig-network-dns#dns-push-images Promote the images to gcr.io/k8s-artifacts-prod using the process described in this link. The image SHAs should be added to images/k8s-staging-dns/images.yaml. The SHAs can be obtained by running the command python parse-image-sha.py This will return the SHAs for kube-dns as well as node-cache images. Node-cache images are always promoted, kube-dns images are promoted if there is a change to kubedns/vulnerability fix. Images will be available in the repo registry.k8s.io/dns/. The node-cache image with tag 1.15.14 can be found at registry.k8s.io/dns/k8s-dns-node-cache:1.15.14. Older versions are at registry.k8s.io/k8s-dns-node-cache: Submit a PR for the kubernetes/kubernetes repository to switch to the new version of the containers. Example - kubernetes/kubernetes#106189 Version compatibilityThere is no version compatibility requirements with Kubernetes releases. Version numbers in this repo are not related to Kubernetes versions. |
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