69a9759d90
Automatic merge from submit-queue Support windows in dockershim **What this PR does / why we need it**: This is the 2nd part for https://github.com/kubernetes/kubernetes/issues/45927 . The non-cri implementation dockertools was removed from kubelet v1.7 . Part of previous work for supporting windows container lies in v1.6 dockertools, this PR is to port them to dockershim. Main reference file in v1.6 dockertools windows support: https://github.com/kubernetes/kubernetes/blob/v1.6.4/pkg/kubelet/dockertools/docker_manager_windows.go **Which issue this PR fixes** 45927, for now catching up the implementation of v1.6 **Special notes for your reviewer**: The code change includes 4 parts, put them together as we discussed in https://github.com/kubernetes/kubernetes/pull/46089 1. Update go-winio package to a newer version 'go-winio' package is used by docker client. This change is to bring the support for Go v1.8, specifically included in the PR: https://github.com/Microsoft/go-winio/pull/48 Otherwise it will produce a lot of error like in: https://github.com/fsouza/go-dockerclient/issues/648 2. Add os dependent getSecurityOpts helper method. seccomp not supported on windows Corresponding code in v1.6: https://github.com/kubernetes/kubernetes/blob/v1.6.4/pkg/kubelet/dockertools/docker_manager_windows.go#L78 3. Add updateCreateConfig. Allow user specified network mode setting. This is to be compatible with what kube-proxy package does on Windows. Also, there is a Linux section in both sandbox config and container config： LinuxPodSandboxConfig， LinuxContainerConfig. And that section later goes to Config and HostConfig section under docker container createConfig. Ideally hostconfig section should be dependent on host os, while config should depend on container image os. To simplify the case, here it assumes that windows host supports windows type container image only. It needs to be updated when kubernetes is to support windows host running linux container image or the like. Corresponding code in v1.6: https://github.com/kubernetes/kubernetes/blob/v1.6.4/pkg/kubelet/dockertools/docker_manager_windows.go#L57 4. Add podIpCache in dockershim. For v1.6 windows implementation, it still does not use sandbox, thus only allow single container to be exposed. Here added a cache for saving container IP, to get adapted to the new CRI api. Corresponding code in v1.6: No sandbox: https://github.com/kubernetes/kubernetes/blob/v1.6.4/pkg/kubelet/dockertools/docker_manager_windows.go#L66 Use container id as pod ip: https://github.com/kubernetes/kubernetes/blob/v1.6.4/pkg/kubelet/dockertools/docker_manager.go#L2727 **Release note**: |
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README.md
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.
Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF). If you are a company that wants to help shape the evolution of technologies that are container-packaged, dynamically-scheduled and microservices-oriented, consider joining the CNCF. For details about who's involved and how Kubernetes plays a role, read the CNCF announcement.
To start using Kubernetes
See our documentation on kubernetes.io.
Try our interactive tutorial.
Take a free course on Scalable Microservices with Kubernetes.
To start developing Kubernetes
The community repository hosts all information about building Kubernetes from source, how to contribute code and documentation, who to contact about what, etc.
If you want to build Kubernetes right away there are two options:
You have a working Go environment.
$ go get -d k8s.io/kubernetes
$ cd $GOPATH/src/k8s.io/kubernetes
$ make
You have a working Docker environment.
$ git clone https://github.com/kubernetes/kubernetes
$ cd kubernetes
$ make quick-release
If you are less impatient, head over to the developer's documentation.
Support
If you need support, start with the troubleshooting guide and work your way through the process that we've outlined.
That said, if you have questions, reach out to us one way or another.