node: switching prometheus flock location to tsdb (#19376)

* node: switching prometheus flock location to tsdb

* rookie mistake

node/node.go

@@ -34,7 +34,7 @@ import (
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/rpc"
-	"github.com/prometheus/prometheus/util/flock"
+	"github.com/prometheus/tsdb/fileutil"
 )
 
 // Node is a container on which services can be registered.
@@ -43,8 +43,8 @@ type Node struct {
 	config   *Config
 	accman   *accounts.Manager
 
-	ephemeralKeystore string         // if non-empty, the key directory that will be removed by Stop
-	instanceDirLock   flock.Releaser // prevents concurrent use of instance directory
+	ephemeralKeystore string            // if non-empty, the key directory that will be removed by Stop
+	instanceDirLock   fileutil.Releaser // prevents concurrent use of instance directory
 
 	serverConfig p2p.Config
 	server       *p2p.Server // Currently running P2P networking layer
@@ -267,7 +267,7 @@ func (n *Node) openDataDir() error {
 	}
 	// Lock the instance directory to prevent concurrent use by another instance as well as
 	// accidental use of the instance directory as a database.
-	release, _, err := flock.New(filepath.Join(instdir, "LOCK"))
+	release, _, err := fileutil.Flock(filepath.Join(instdir, "LOCK"))
 	if err != nil {
 		return convertFileLockError(err)
 	}