Add consistent -debug and -debug.port flags to commands (#7816)

* Add consistent -debug and -debug.port flags to commands

Add -debug and -debug.port flags to weed master, weed volume, weed s3,
weed mq.broker, and weed filer.sync commands for consistency with
weed filer.

When -debug is enabled, an HTTP server starts on the specified port
(default 6060) serving runtime profiling data at /debug/pprof/.

For mq.broker, replaced the older -port.pprof flag with the new
-debug and -debug.port pattern for consistency.

* Update weed/util/grace/pprof.go

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

weed/command/s3.go

@@ -26,6 +26,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/security"
 	stats_collect "github.com/seaweedfs/seaweedfs/weed/stats"
 	"github.com/seaweedfs/seaweedfs/weed/util"
+	"github.com/seaweedfs/seaweedfs/weed/util/grace"
 	"github.com/seaweedfs/seaweedfs/weed/util/version"
 )
 
@@ -59,6 +60,8 @@ type S3Options struct {
 	concurrentUploadLimitMB   *int
 	concurrentFileUploadLimit *int
 	enableIam                 *bool
+	debug                     *bool
+	debugPort                 *int
 }
 
 func init() {
@@ -88,6 +91,8 @@ func init() {
 	s3StandaloneOptions.concurrentUploadLimitMB = cmdS3.Flag.Int("concurrentUploadLimitMB", 0, "limit total concurrent upload size, 0 means unlimited")
 	s3StandaloneOptions.concurrentFileUploadLimit = cmdS3.Flag.Int("concurrentFileUploadLimit", 0, "limit number of concurrent file uploads, 0 means unlimited")
 	s3StandaloneOptions.enableIam = cmdS3.Flag.Bool("iam", true, "enable embedded IAM API on the same port")
+	s3StandaloneOptions.debug = cmdS3.Flag.Bool("debug", false, "serves runtime profiling data via pprof on the port specified by -debug.port")
+	s3StandaloneOptions.debugPort = cmdS3.Flag.Int("debug.port", 6060, "http port for debugging")
 }
 
 var cmdS3 = &Command{
@@ -182,6 +187,9 @@ var cmdS3 = &Command{
 }
 
 func runS3(cmd *Command, args []string) bool {
+	if *s3StandaloneOptions.debug {
+		grace.StartDebugServer(*s3StandaloneOptions.debugPort)
+	}
 
 	util.LoadSecurityConfiguration()