This allows us to interrupt/kill the executed command if it exceeds the
timeout (not implemented by this commit).
Set timeout in Exec probes. HTTPGet and TCPSocket probes respect the
timeout, while Exec probes used to ignore it.
Add e2e test for exec probe with timeout. However, the test is skipped
while the default exec handler doesn't support timeouts.
Automatic merge from submit-queue
Initial work on running windows containers on Kubernetes
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This is the first stab at getting the Kubelet running on Windows (fixes#30279), and getting it to deploy network-accessible pods that consist of Windows containers. Thanks @csrwng, @jbhurat for helping out.
The main challenge with Windows containers at this point is that container networking is not supported. In other words, each container in the pod will get it's own IP address. For this reason, we had to make a couple of changes to the kubelet when it comes to setting the pod's IP in the Pod Status. Instead of using the infra-container's IP, we use the IP address of the first container.
Other approaches we investigated involved "disabling" the infra container, either conditionally on `runtime.GOOS` or having a separate windows-docker container runtime that re-implemented some of the methods (would require some refactoring to avoid maintainability nightmare).
Other changes:
- The default docker endpoint was removed. This results in the docker client using the default for the specific underlying OS.
More detailed documentation on how to setup the Windows kubelet can be found at https://docs.google.com/document/d/1IjwqpwuRdwcuWXuPSxP-uIz0eoJNfAJ9MWwfY20uH3Q.
cc: @ikester @brendandburns @jstarks
Automatic merge from submit-queue
Separate Direct and Indirect streaming paths, implement indirect path for CRI
This PR refactors the `pkg/kubelet/container.Runtime` interface to remove the `ExecInContainer`, `PortForward` and `AttachContainer` methods. Instead, those methods are part of the `DirectStreamingRuntime` interface which all "legacy" runtimes implement. I also added an `IndirectStreamingRuntime` which handles the redirect path and is implemented by CRI runtimes. To control the size of this PR, I did not fully setup the indirect streaming path for the dockershim, so I left legacy path behind.
Most of this PR is moving & renaming associated with the refactoring. To understand the functional changes, I suggest tracing the code from `getExec` in `pkg/kubelet/server/server.go`, which calls `GetExec` in `pkg/kubelet/kubelet_pods.go` to determine whether to follow the direct or indirect path.
For https://github.com/kubernetes/kubernetes/issues/29579
/cc @kubernetes/sig-node
Automatic merge from submit-queue
CRI: Add devices to ContainerConfig
This PR adds devices to ContainerConfig and adds experimental GPU support.
cc/ @yujuhong @Hui-Zhi @vishh @kubernetes/sig-node
Automatic merge from submit-queue
CRI: Add kuberuntime container logs
Based on https://github.com/kubernetes/kubernetes/pull/34858.
The first 2 commits are from #34858. And the last 2 commits are new.
This PR added kuberuntime container logs support and add unit test for it.
I've tested all the functions manually, and I'll send another PR to write a node e2e test for container log.
**_Notice: current implementation doesn't support log rotation**_, which means that:
- It will not retrieve logs in rotated log file.
- If log rotation happens when following the log:
- If the rotation is using create mode, we'll still follow the old file.
- If the rotation is using copytruncate, we'll be reading at the original position and get nothing.
To solve these issues, kubelet needs to rotate the log itself, or at least kubelet should be able to control the the behavior of log rotator. These are doable but out of the scope of 1.5 and will be addressed in future release.
@yujuhong @feiskyer @yifan-gu
/cc @kubernetes/sig-node
Chao Xu