fix: Remove Parca debug info upload from user configuration (#5391)

Author: korniltsev-grafanista

docs/sources/reference/components/pyroscope/pyroscope.ebpf.md

@@ -87,32 +87,7 @@ Several arguments are marked as "Deprecated (no-op)". These arguments were previ
 
 ## Blocks
 
-You can use the following blocks with `pyroscope.ebpf`:
-
-| Hierarchy    | Block        | Description                                             | Required |
-|--------------|--------------|---------------------------------------------------------|----------|
-| `debug_info` | [debug_info] | Configures debug information handling and remote upload. | no       |
-
-[debug_info]: #debug_info
-
-### debug_info
-
-The `debug_info` block configures how the component handles debug information for symbolization. You can use it to enable on-target symbolization, which resolves symbols locally, or to upload debug information to a remote endpoint for server-side symbolization.
-
-You can use the following arguments with the `debug_info` block:
-
-| Name                      | Type   | Description                                                            | Default | Required |
-|---------------------------|--------|------------------------------------------------------------------------|---------|----------|
-| `on_target_symbolization` | `bool` | Enables on-target symbolization using local debug information.         | `true`  | no       |
-| `upload`                  | `bool` | Enables uploading debug information to the remote endpoint.            | `false` | no       |
-| `cache_size`              | `int`  | Size of the LRU cache for tracking uploaded debug information.         | `65536` | no       |
-| `strip_text_section`      | `bool` | Strips the `.text` section from debug information before upload.       | `false` | no       |
-| `queue_size`              | `int`  | Size of the upload queue.                                              | `1024`  | no       |
-| `worker_num`              | `int`  | Number of worker goroutines for uploading debug information.           | `8`     | no       |
-
-When `on_target_symbolization` is enabled, the component resolves symbols locally using debug files found on the host. This is the default behavior and works well when debug symbols are available on the profiled system.
-
-When `upload` is enabled, the component uploads debug information to the configured `pyroscope.write` endpoint, allowing the server to perform symbolization instead. This reduces CPU and memory usage on the profiled host, which is useful in resource-constrained environments.
+`pyroscope.ebpf` doesn't support any blocks.
 
 ## Exported fields
 

internal/component/pyroscope/ebpf/args.go

@@ -5,7 +5,6 @@ import (
 
 	"github.com/grafana/alloy/internal/component/discovery"
 	"github.com/grafana/alloy/internal/component/pyroscope"
-	"github.com/grafana/alloy/internal/component/pyroscope/write/debuginfo"
 )
 
 type Arguments struct {
@@ -29,8 +28,6 @@ type Arguments struct {
 	LazyMode            bool                   `alloy:"lazy_mode,attr,optional"`
 	DeprecatedArguments DeprecatedArguments    `alloy:",squash"`
 
-	DebugInfoOptions debuginfo.Arguments `alloy:"debug_info,block,optional"`
-
 	// undocumented
 	PyroscopeDynamicProfilingPolicy bool   `alloy:"targets_only,attr,optional"`
 	SymbCachePath                   string `alloy:"symb_cache_path,attr,optional"`

internal/component/pyroscope/ebpf/ebpf_linux.go

@@ -67,20 +67,17 @@ func New(logger log.Logger, reg prometheus.Registerer, id string, args Arguments
 
 	appendable := pyroscope.NewFanout(args.ForwardTo, id, reg)
 
-	var nfs *irsymcache.Resolver
-	if args.DebugInfoOptions.OnTargetSymbolizationEnabled {
-		nfs, err = irsymcache.NewFSCache(logger, irsymcache.TableTableFactory{
-			Options: []lidia.Option{
-				lidia.WithFiles(),
-				lidia.WithLines(),
-			},
-		}, irsymcache.Options{
-			SizeEntries: uint32(args.SymbCacheSizeEntries),
-			Path:        args.SymbCachePath,
-		})
-		if err != nil {
-			return nil, err
-		}
+	nfs, err := irsymcache.NewFSCache(logger, irsymcache.TableTableFactory{
+		Options: []lidia.Option{
+			lidia.WithFiles(),
+			lidia.WithLines(),
+		},
+	}, irsymcache.Options{
+		SizeEntries: uint32(args.SymbCacheSizeEntries),
+		Path:        args.SymbCachePath,
+	})
+	if err != nil {
+		return nil, err
 	}
 
 	if dynamicProfilingPolicy {
@@ -282,11 +279,9 @@ func (c *Component) ReportExecutable(md *reporter2.ExecutableMetadata) {
 	if c.symbols != nil {
 		c.symbols.ReportExecutable(md)
 	}
-	if c.args.DebugInfoOptions.UploadEnabled {
-		c.reportExecutableForDebugInfoUpload(md)
-	}
 }
 
+//nolint:unused
 func (c *Component) reportExecutableForDebugInfoUpload(args *reporter2.ExecutableMetadata) {
 	extractAsFile := func(pid libpf.PID, file string) string {
 		return path.Join("/proc", strconv.Itoa(int(pid)), "root", file)
@@ -309,7 +304,6 @@ func (c *Component) reportExecutableForDebugInfoUpload(args *reporter2.Executabl
 	c.appendable.Upload(debuginfo.UploadJob{
 		FrameMappingFileData: mf,
 		Open:                 open,
-		InitArguments:        c.args.DebugInfoOptions,
 	})
 }
 
@@ -333,15 +327,6 @@ func NewDefaultArguments() Arguments {
 		VerboseMode:     false,
 		LazyMode:        false,
 
-		DebugInfoOptions: debuginfo.Arguments{
-			OnTargetSymbolizationEnabled: true,
-			UploadEnabled:                false,
-			CacheSize:                    65536,
-			StripTextSection:             false,
-			QueueSize:                    1024,
-			WorkerNum:                    8,
-		},
-
 		// undocumented
 		PyroscopeDynamicProfilingPolicy: true,
 		SymbCachePath:                   "/tmp/symb-cache",

internal/component/pyroscope/receive_http/debuginfo.go

@@ -15,6 +15,7 @@ import (
 
 var errNoDebugInfoClient = status.Error(codes.Unavailable, "no debug info client available")
 
+//nolint:unused
 func (c *Component) mountDebugInfo(router *mux.Router) {
 	c.grpcServer = NewGrpcServer(c.server.Config())
 	debuginfogrpc.RegisterDebuginfoServiceServer(c.grpcServer, c)

internal/component/pyroscope/receive_http/receive_http.go

@@ -147,8 +147,6 @@ func (c *Component) update(args component.Arguments) (bool, error) {
 		// mount connect go pushv1
 		pathPush, handlePush := pushv1connect.NewPusherServiceHandler(c)
 		router.PathPrefix(pathPush).Handler(handlePush).Methods(http.MethodPost)
-
-		c.mountDebugInfo(router)
 	})
 }
 

internal/component/pyroscope/util/internal/cmd/playground/main.go

@@ -56,7 +56,7 @@ func newEbpf(forward pyroscope.Appendable, uprobeLinks []string) *ebpf.Component
 	args.ReporterUnsymbolizedStubs = true
 	args.Demangle = "full"
 	args.UProbeLinks = uprobeLinks
-	args.DebugInfoOptions.UploadEnabled = true
+	// args.DebugInfoOptions.UploadEnabled = true
 	e, err := ebpf.New(
 		log.With(l, "component", "ebpf"),
 		reg,