### Structured logging

SIG Instrumentation standardized the structure of log messages and references to Kubernetes objects. Structured logging makes parsing, processing, storing, querying and analyzing logs easier. New methods in the klog library enforce log message structure.

### EndpointSlices are now enabled by default

The Kubernetes community [has written a blog post about this in detail](https://blog.k8s.io/2020/12/02/dont-panic-kubernetes-and-docker/) with [a dedicated FAQ page for it](https://blog.k8s.io/2020/12/02/dockershim-faq/).

### External credential provider for client-go

- Text logging in Kubernetes components now uses [textlogger](https://pkg.go.dev/k8s.io/klog/v2@v2.120.0/textlogger). The same split streams of info and error log entries with buffering of info entries is now also supported for text output (off by default, alpha feature). Previously, this was only supported for JSON. Performance is better also without split streams. ([#114...

0007dnsdojo\ndnsiskinky\u000bdoesntexist\u0005dojin\u0009dontexist\u0007doomdns\u0006dopaas\u0008drayddns\u000cdreamhosters\u000edrive-platform\u0007dsmynas\u0007durumis\ndyn-o-saur\u0008dynalias\u000edyndns-at-home\u000edyndns-at-work\u000bdyndns-blog\u000bdyndns-free\u000bdyndns-home\u0009dyndns-ip\u000bdyndns-mail\rdyndns-office\u000bdyndns-pics\rdyndns-remote\rdyndns-server\ndyndns-web\u000bdyndns-wiki\u000bdyndns-work\u0005dynns\u0008dynuddns\u000bdynuhosting\u0010elasticbeanstalk\remergent...

     *
     * @param content the message to log
     * @param error the error that caused this log
     */
    void debug(CharSequence content, Throwable error);

    /**
     * Sends an exception to the user in the <b>debug</b> error level.
     * The stack trace for this exception will be output when this error level is enabled.
     *
     * @param error the error that caused this log
     */
    void debug(Throwable error);

 * rather than formatting first by calling <code>toString()</code>.
 *
 *
 * @deprecated Use SLF4J directly
 */
@Deprecated
public interface Log {
    /**
     * @return true if the <b>debug</b> error level is enabled
     */
    boolean isDebugEnabled();

    /**
     * Send a message to the user in the <b>debug</b> error level.
     *

- Kube-apiserver: `--audit-log-version` and `--audit-webhook-version` now only support the default value of `audit.k8s.io/v1`. The v1alpha1 and v1beta1 audit log versions, deprecated since 1.13, have been removed. ([#108092](https://github.com/kubernetes/kubernetes/pull/108092), [@carlory](https://github.com/carlory))

Shinsuke Sugaya <******@****.***> 1444546274 +0900

pkg log/slog, const LevelDebug = -4 #56345
pkg log/slog, const LevelDebug Level #56345
pkg log/slog, const LevelError = 8 #56345
pkg log/slog, const LevelError Level #56345
pkg log/slog, const LevelInfo = 0 #56345
pkg log/slog, const LevelInfo Level #56345
pkg log/slog, const LevelKey ideal-string #56345
pkg log/slog, const LevelKey = "level" #56345
pkg log/slog, const LevelWarn = 4 #56345
pkg log/slog, const LevelWarn Level #56345

//go:build go1.21

package logger

import (
	"bytes"
	"context"
	"log/slog"
	"strings"
	"testing"
	"time"
)

func TestSlogLogger(t *testing.T) {
	buf := &bytes.Buffer{}
	handler := slog.NewTextHandler(buf, &slog.HandlerOptions{AddSource: true})
	logger := NewSlogLogger(slog.New(handler), Config{LogLevel: Info})

	logger.Trace(context.Background(), time.Now(), func() (string, int64) {
		return "select count(*) from users", 0