* Add feature gate, API, and conflict validation tests for enablecrashloopbackoffmax
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Handle when current base is longer than node max
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Update pkg/features/kube_features.go
Co-authored-by: Tsubasa Nagasawa <toversus2357@gmail.com>
* Fix indentation
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Follow convention for success test
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Normalize casing, and change field to Duration
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Fix json name and some other casing errors
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Another one I missed before
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Don't clobber global max function
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Change to flat value in defaults.go
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Streamline validation and defaults
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Fix typecheck
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Lint
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Tighten up validation for subsecond values
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Rename field from MaxBackOffPeriod to MaxContainerRestartPeriod
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* A few missed references to renames
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Only compare flags in flags test
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Don't mess with SetDefault signature
Nobody messes with SetDefault signature
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Fix stale signature change, and update test data
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Inspect current feature gates at defaulting time
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Don't use the global feature gate for temp usage
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Expose default error, and some comments
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
* Hint fuzzer for less arbitrary values to FeatureGates
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
---------
Signed-off-by: Laura Lorenz <lauralorenz@google.com>
Co-authored-by: Tsubasa Nagasawa <toversus2357@gmail.com>
This replaces the klog formatting and message routing with a simpler
implementation that uses less code. The main difference is that we skip the
entire unused message routing.
Instead, the same split output streams as for JSON gets implemented in the
io.Writer implementation that gets passed to the textlogger.
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.
This patch adds new Kubelet option topologyManagerPolicyOptions.
To introduce new TopologyManager options, first we need to introduce new
flag called `topology-manager-policy-options` to allow users to modify
behaviour of best-effort and restricted policies.
Signed-off-by: PiotrProkop <pprokop@nvidia.com>
This change is to promote local storage capacity isolation feature to GA
At the same time, to allow rootless system disable this feature due to
unable to get root fs, this change introduced a new kubelet config
"localStorageCapacityIsolation". By default it is set to true. For
rootless systems, they can set this configuration to false to disable
the feature. Once it is set, user cannot set ephemeral-storage
request/limit because capacity and allocatable will not be set.
Change-Id: I48a52e737c6a09e9131454db6ad31247b56c000a
These three options are the ones from logs.AddFlags which are not deprecated.
Therefore it makes sense to make them available also via the configuration file
support in the one command which currently supports that (kubelet).
Long-term, all commands should use LoggingConfiguration, either with a
configuration file (as in kubelet) or via flags (kube-scheduler,
kube-apiserver, kube-controller-manager).
Short-term, both approaches have to be supported. As the majority of the
commands only use logs.AddFlags, that function by default continues to register
the flags and only leaves that to Options.AddFlags when explicitly requested.
A drive-by bug fix is done for log flushing: the periodic flushing called
klog.Flush and therefore missed explicit flushing of the newer logr
backend. This bug was never present in any release Kubernetes and therefore the
fix is not submitted in a separate PR.
This implements the replacement of klog output to different files per level
with optionally splitting JSON output into two streams: one for info messages
on stdout, one for error messages on stderr. The info messages can get buffered
to increase performance. Because stdout and stderr might be merged by the
consumer, the info stream gets flushed before writing an error, to ensure that
the order of messages is preserved.
This also ensures that the following code pattern doesn't leak info messages:
klog.ErrorS(err, ...)
os.Exit(1)
Commands explicitly have to flush before exiting via logs.FlushLogs. Most
already do. But buffered info messages can still get lost during an unexpected
program termination, therefore buffering is off by default.
The new options get added to the v1alpha1 LoggingConfiguration with new command
line flags. Because it is an alpha field, changing it inside the v1beta kubelet
config should be okay as long as the fields are clearly marked as alpha.
In this patch we enhance the kubelet configuration to support
cpuManagerPolicyOptions.
In order to introduce SMT-awareness in CPU Manager, we introduce a
new flag in Kubelet to allow the user to specify an additional flag
called `cpumanager-policy-options` to allow the user to modify the
behaviour of static policy to strictly guarantee allocation of whole
core.
Co-authored-by: Francesco Romani <fromani@redhat.com>
Signed-off-by: Swati Sehgal <swsehgal@redhat.com>
This adds the gate `SeccompDefault` as new alpha feature. Seccomp path
and field fallbacks are now passed to the helper functions, whereas unit
tests covering those code paths have been added as well.
Beside enabling the feature gate, the feature has to be enabled by the
`SeccompDefault` kubelet configuration or its corresponding
`--seccomp-default` CLI flag.
Signed-off-by: Sascha Grunert <sgrunert@redhat.com>
Apply suggestions from code review
Co-authored-by: Paulo Gomes <pjbgf@linux.com>
Signed-off-by: Sascha Grunert <sgrunert@redhat.com>
Implements KEP 2000, Graceful Node Shutdown:
https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2000-graceful-node-shutdown
* Add new FeatureGate `GracefulNodeShutdown` to control
enabling/disabling the feature
* Add two new KubeletConfiguration options
* `ShutdownGracePeriod` and `ShutdownGracePeriodCriticalPods`
* Add new package, `nodeshutdown` that implements the Node shutdown
manager
* The node shutdown manager uses the systemd inhibit package, to
create an system inhibitor, monitor for node shutdown events, and
gracefully terminate pods upon a node shutdown.
