This completes the deprecation of klog flags which are no longer supported.
klog itself continues to support them, but Kubernetes components don't. This
makes the command line interfaces simpler and reduces the attack surface
because less functionality is exposed.
For example, kube-controller-manager now has:
Logs flags:
--log-flush-frequency duration
Maximum number of seconds between log flushes (default 5s)
--log-json-info-buffer-size quantity
[Alpha] In JSON format with split output streams, the info messages can be buffered for a while to increase performance. The default value of zero
bytes disables buffering. The size can be specified as number of bytes (512), multiples of 1000 (1K), multiples of 1024 (2Ki), or powers of those (3M,
4G, 5Mi, 6Gi). Enable the LoggingAlphaOptions feature gate to use this.
--log-json-split-stream
[Alpha] In JSON format, write error messages to stderr and info messages to stdout. The default is to write a single stream to stdout. Enable the
LoggingAlphaOptions feature gate to use this.
--logging-format string
Sets the log format. Permitted formats: "json" (gated by LoggingBetaOptions), "text". (default "text")
-v, --v Level
number for the log level verbosity
--vmodule pattern=N,...
comma-separated list of pattern=N settings for file-filtered logging (only works for text log format)
Misc flags:
--kubeconfig string
Path to kubeconfig file with authorization and master location information.
--master string
The address of the Kubernetes API server (overrides any value in kubeconfig).
Global flags:
-h, --help
help for kube-controller-manager
--version version[=true]
Print version information and quit
For details see
https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/2845-deprecate-klog-specific-flags-in-k8s-components
Some scripts and tools still relied on the deprecated flags, the ones
which are about to be removed.
This is intentionally not a complete removal of all those flags in the entire
repo. This would lead to much more code churn also in places where commands
still accept the flags because they use klog directly.
Update the IPVS proxier to have a bool `initialSync` which is set to
true when a new proxier is initialized and then set to false on all
syncs. This lets us run startup-only logic, which subsequently lets us
update the realserver only when needed and avoiding any expensive
operations.
Signed-off-by: Sanskar Jaiswal <jaiswalsanskar078@gmail.com>
event msg will be impacted due to the wrong status is returned.
e.g.
Warning FailedScheduling ... running PreFilter plugin "PodTopologySpread": %!!(MISSING)w(<nil>)
Signed-off-by: Dave Chen <dave.chen@arm.com>
