Print logs in json format (#389)

edit zap.Options for logs

Author: bruelea

cmd/main.go

@@ -31,6 +31,7 @@ import (
 	// to ensure that exec-entrypoint and run can make use of them.
 	_ "k8s.io/client-go/plugin/pkg/client/auth"
 
+	"go.uber.org/zap/zapcore"
 	"k8s.io/apimachinery/pkg/runtime"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
@@ -76,7 +77,8 @@ func main() {
 	flag.BoolVar(&enableHTTP2, "enable-http2", false,
 		"If set, HTTP/2 will be enabled for the metrics and webhook servers")
 	opts := zap.Options{
-		Development: true,
+		Development:     false,
+		StacktraceLevel: zapcore.PanicLevel,
 	}
 	opts.BindFlags(flag.CommandLine)
 	flag.Parse()

go.mod

@@ -21,6 +21,7 @@ require (
 	github.com/stretchr/testify v1.10.0
 	github.com/swisscom/leaselocker v0.2.0
 	go.uber.org/mock v0.5.2
+	go.uber.org/zap v1.27.0
 	k8s.io/api v0.33.3
 	k8s.io/apimachinery v0.33.3
 	k8s.io/client-go v0.33.3
@@ -98,7 +99,6 @@ require (
 	go.opentelemetry.io/proto/otlp v1.7.0 // indirect
 	go.uber.org/automaxprocs v1.6.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	go.uber.org/zap v1.27.0 // indirect
 	go.yaml.in/yaml/v2 v2.4.2 // indirect
 	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
 	golang.org/x/net v0.42.0 // indirect