[Windows Service] Inherit exit code from agent (#4824)

Signed-off-by: Jan-Otto Kröpke <[email protected]>
Co-authored-by: mattdurham <[email protected]>

CHANGELOG.md

@@ -90,6 +90,8 @@ Main (unreleased)
 
 - Fix issue where Agent crashes when a blackbox modules config file is specified for blackbox integration. (@marctc)
 
+- Fix issue where the code from agent would not return to the Windows Service Manager (@jkroepke)
+
 - Fix issue where getting the support bundle failed due to using an HTTP Client that was not able to access the agent in-memory address. (@spartan0x117)
 
 - Fix an issue that lead the `loki.source.docker` container to use excessive

cmd/grafana-agent-service/service.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"io"
+	"os"
 	"os/exec"
 
 	"github.com/go-kit/log"
@@ -75,6 +76,7 @@ func (svc *serviceManager) Run(ctx context.Context) {
 	} else {
 		level.Info(svc.log).Log("msg", "service exited", "exit_code", exitCode)
 	}
+	os.Exit(exitCode)
 }
 
 func (svc *serviceManager) buildCommand(ctx context.Context) *exec.Cmd {