This change also involves adding a custom error type for probe timeouts
so that the kubelet exec prober can distinguish between failed probes
that have exited or probes that have timed out.
Signed-off-by: Andrew Sy Kim <kim.andrewsy@gmail.com>
When using a HTTP probe, the request will now have a "Accept" header by default with the "*/*" (accept all)
Most tools do add this header (see curl) so it's a reasonable expectation that http probe has it as well
PR#76518 introduced a change to limit the the read on various calls with
utilio.ReadAtMost. By design, ReadAtMost will return an error if there
is a truncation, but the calling code needs to know to handle it.
In 1f270ef4e2, we added 10KB as the read
limit for http probes. we should do the same for exec probes as well.
Change-Id: If154c5c4e669829ab94839c56260a894a6714f0f
Two small code cleanup changes for `probe/http`.
- Tests name the `followNonLocalRedirects` variable before passing to
`New`, so its clear what the boolean flag in the construct impacts.
- Change import name from `httprobe` to `httpprobe` when used by
`pkg/kubelet/prober/prober.go`. Establishes consistency with other uses
in the repo.
The reason for the bump is the new functionality of the
k8s.io/utils/exec package which allows
- to get a hold of the process' std{out,err} as `io.Reader`s
- to `Start` a process and `Wait` for it
This should help on addressing #70890 by allowing to wrap std{out,err}
of the process to be wrapped with a `io.limitedReader`.
It also updates
- k8s.io/kubernetes/pkg/probe/exec.FakeCmd
- k8s.io/kubernetes/pkg/kubelet/prober.execInContainer
- k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet.fakeCmd
to implement the changed interface.
The dependency on 'k8s.io/utils/pointer' to the new version has also
been bumped in some staging repos:
- apiserver
- kube-controller-manager
- kube-scheduler
- Move from the old github.com/golang/glog to k8s.io/klog
- klog as explicit InitFlags() so we add them as necessary
- we update the other repositories that we vendor that made a similar
change from glog to klog
* github.com/kubernetes/repo-infra
* k8s.io/gengo/
* k8s.io/kube-openapi/
* github.com/google/cadvisor
- Entirely remove all references to glog
- Fix some tests by explicit InitFlags in their init() methods
Change-Id: I92db545ff36fcec83afe98f550c9e630098b3135
This change adds comments to exported things and renames the tcp,
http, and exec probe interfaces to just be Prober within their
namespace.
Issue #68026
If unspecified in probe definition, User-Agent will be set to
`kube-probe/<version major.minor>` on httpGet probe types
instead of the default Go User-Agent.
etcd has support for client-cert-auth, which can be configured via the flag `--ca-file`,
when that is enabled, all the client requests must present with a client certificate,
however, the current component status check uses a single transport for all of the checks,
this is wrong, the checks should be different for each of different component, and make
each of them use different transport(tls configurations).
