A previous commit added the capability to read the DNS configuration options
from a Windows host, while removing the capability to read from a resolv.conf-like
file.
This commit addresses this issue: if the given ``--resolv-conf`` option is not set to
``Host``, it will consider it as a file, preserving the previous behavior.
The status manager channel forces all container status to be
processed, even if multiple updates are generated in succession.
Instead of queueing the updates, just remember which ones changed
and process them in a batch. This should reduce QPS load from
the Kubelet for status, reduce latency of status propagation to
the API in general, and is easier to reason about.
This also prevents status from being lost when the channel is
full - all updates sent by SetPodStatus are guaranteed to be
recorded. Changing to remove the channel allows us to set a
marker flag when the pod worker state machine completes that
avoids the status manager having to call into the pod worker
directly.
Though not obvious as currently written, PreferNodeIP() has different
semantics with legacy and external cloud providers, since one kind of
node IP value never gets passed in the external cloud provider case.
Split it into two functions to make this clearer (and to prepare for
adding new external-cloud-only semantics, and to make it clearer that
some of the code can be deleted when legacy cloud providers go away).
This PR makes the NodePrepareResources() and NodeUnprepareResource()
calls of the kubeletplugin API for DynamicResourceAllocation
symmetrical. It wasn't clear how one would use the set of CDIDevices
passed back in the NodeUnprepareResource() of the v1alpha1 API, and the
new API now passes back the full ResourceHandle that was originally
passed to the Prepare() call. Passing the ResourceHandle is strictly
more informative and a plugin could always (re)derive the set of
CDIDevice from it.
This is a breaking change, but this release is scheduled to break
multiple APIs for DynamicResourceAllocation, so it makes sense to do
this now instead of later.
Signed-off-by: Kevin Klues <kklues@nvidia.com>
Currently, there are some unit tests that are failing on Windows due to
various reasons:
- getHostDNSConfig is reading a resolv.conf file. However, we don't have
that on Windows. Instead, we can get the DNS server list and the DNS
suffix list from Windows itself.
On Windows, getHostDNSConfig will now return the host's DNS configuration
if the given resolverConfig is "Host". If it's not "Host" or an empty string,
an error will be returned.
Based on the code from kubernetes/test/images/agnhost/dns/dns_windows.go
To enable rate limiting, needed for GA graduation,
we need to pass more parameters to the already crowded
`ListenAndServePodresources` function.
To tidy up a bit, pack the parameters in a helper struct,
with no intended changes in behavior.
Signed-off-by: Francesco Romani <fromani@redhat.com>
* Update pod_container_manager_linux.go
This is a simple optimization to reduce repeated invoking of the GetPodContainerName function.
* Update pod_container_manager_linux.go
将podContainerName, _ := m.GetPodContainerName(pod)更靠近使用podcontainerName变量的位置
Provide an administrator a streaming view of journal logs on Linux
systems using journalctl, and event logs on Windows systems using the
Get-WinEvent PowerShell cmdlet without them having to implement a client
side reader.
Only available to cluster admins.
The implementation for journald on Linux was originally done by Clayton
Coleman.
Introduce a heuristics approach to query logs
The logs query for node objects will follow a heuristics approach
when asked to query for logs from a service. If asked to get the
logs from a service foobar, it will first check if foobar logs to the
native OS service log provider. If unable to get logs from these, it
will attempt to get logs from /var/foobar, /var/log/foobar.log or
/var/log/foobar/foobar.log in that order.
The logs sub-command can also directly serve a file if the query looks
like a file.
Co-authored-by: Clayton Coleman <ccoleman@redhat.com>
Co-authored-by: Christian Glombek <cglombek@redhat.com>
Added EnableNodeLogQuery field to kubelet/apis/config/types.go and
staging/src/k8s.io/kubelet/config/v1beta1/types.go, then executed.
`hack/update-codegen.sh`.
This new field will default to off and will need to be explicitly
enabled in addition to the NodeLogQuery gate to use the feature.
