fix: s3 gateway DNS cache initialization (#10706)

fixes #10705

cmd/common-main.go

@@ -21,6 +21,7 @@ import (
 	"encoding/gob"
 	"errors"
 	"fmt"
+	"math/rand"
 	"net"
 	"net/url"
 	"os"
@@ -33,6 +34,7 @@ import (
 	"github.com/minio/cli"
 	"github.com/minio/minio-go/v7/pkg/set"
 	"github.com/minio/minio/cmd/config"
+	xhttp "github.com/minio/minio/cmd/http"
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/auth"
 	"github.com/minio/minio/pkg/certs"
@@ -43,6 +45,9 @@ func init() {
 	logger.Init(GOPATH, GOROOT)
 	logger.RegisterError(config.FmtError)
 
+	rand.Seed(time.Now().UTC().UnixNano())
+	globalDNSCache = xhttp.NewDNSCache(3*time.Second, 10*time.Second)
+
 	gob.Register(StorageErr(""))
 }
 

cmd/gateway-main.go

@@ -19,14 +19,12 @@ package cmd
 import (
 	"context"
 	"fmt"
-	"math/rand"
 	"net"
 	"net/url"
 	"os"
 	"os/signal"
 	"strings"
 	"syscall"
-	"time"
 
 	"github.com/gorilla/mux"
 	"github.com/minio/cli"
@@ -155,9 +153,6 @@ func ValidateGatewayArguments(serverAddr, endpointAddr string) error {
 
 // StartGateway - handler for 'minio gateway <name>'.
 func StartGateway(ctx *cli.Context, gw Gateway) {
-	rand.Seed(time.Now().UTC().UnixNano())
-
-	globalDNSCache = xhttp.NewDNSCache(3*time.Second, 10*time.Second)
 	defer globalDNSCache.Stop()
 
 	// This is only to uniquely identify each gateway deployments.

cmd/server-main.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"math/rand"
 	"net"
 	"os"
 	"os/signal"
@@ -362,9 +361,6 @@ func initAllSubsystems(ctx context.Context, newObject ObjectLayer) (err error) {
 
 // serverMain handler called for 'minio server' command.
 func serverMain(ctx *cli.Context) {
-	rand.Seed(time.Now().UTC().UnixNano())
-
-	globalDNSCache = xhttp.NewDNSCache(3*time.Second, 10*time.Second)
 	defer globalDNSCache.Stop()
 
 	signal.Notify(globalOSSignalCh, os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT)

pkg/dsync/drwmutex.go

@@ -33,7 +33,6 @@ var dsyncLog bool
 func init() {
 	// Check for MINIO_DSYNC_TRACE env variable, if set logging will be enabled for failed REST operations.
 	dsyncLog = os.Getenv("MINIO_DSYNC_TRACE") == "1"
-	rand.Seed(time.Now().UnixNano())
 }
 
 func log(format string, data ...interface{}) {