Bump cAdvisor to v0.23.3

vendor/github.com/google/cadvisor/collector/prometheus_collector.go

@@ -120,12 +120,18 @@ func (collector *PrometheusCollector) GetSpec() []v1.MetricSpec {
 	}
 
 	lines := strings.Split(string(pageContent), "\n")
+	lineCount := len(lines)
 	for i, line := range lines {
 		if strings.HasPrefix(line, "# HELP") {
-			stopIndex := strings.Index(lines[i+2], "{")
-			if stopIndex == -1 {
-				stopIndex = strings.Index(lines[i+2], " ")
+			if i+2 >= lineCount {
+				break
 			}
+
+			stopIndex := strings.IndexAny(lines[i+2], "{ ")
+			if stopIndex == -1 {
+				continue
+			}
+
 			name := strings.TrimSpace(lines[i+2][0:stopIndex])
 			if _, ok := collector.metricsSet[name]; collector.metricsSet != nil && !ok {
 				continue

vendor/github.com/google/cadvisor/fs/fs.go

@@ -44,6 +44,26 @@ const (
 	LabelRktImages    = "rkt-images"
 )
 
+// The maximum number of `du` tasks that can be running at once.
+const maxConsecutiveDus = 20
+
+// A pool for restricting the number of consecutive `du` tasks running.
+var duPool = make(chan struct{}, maxConsecutiveDus)
+
+func init() {
+	for i := 0; i < maxConsecutiveDus; i++ {
+		releaseDuToken()
+	}
+}
+
+func claimDuToken() {
+	<-duPool
+}
+
+func releaseDuToken() {
+	duPool <- struct{}{}
+}
+
 type partition struct {
 	mountpoint string
 	major      uint
@@ -391,6 +411,8 @@ func (self *RealFsInfo) GetDirUsage(dir string, timeout time.Duration) (uint64,
 	if dir == "" {
 		return 0, fmt.Errorf("invalid directory")
 	}
+	claimDuToken()
+	defer releaseDuToken()
 	cmd := exec.Command("nice", "-n", "19", "du", "-s", dir)
 	stdoutp, err := cmd.StdoutPipe()
 	if err != nil {

vendor/github.com/google/cadvisor/version/VERSION

@@ -1 +1 @@
-0.23.2
+0.23.3