@@ -49,6 +49,7 @@ func NewBuildManager(b builder.Backend) *BuildManager {

 // Build starts a new build from a BuildConfig

 func (bm *BuildManager) Build(ctx context.Context, config backend.BuildConfig) (*builder.Result, error) {

+	buildsTriggered.Inc()

 	if config.Options.Dockerfile == "" {

 		config.Options.Dockerfile = builder.DefaultDockerfileName

 	}

@@ -141,6 +142,7 @@ func (b *Builder) build(source builder.Source, dockerfile *parser.Result) (*buil

 	addNodesForLabelOption(dockerfile.AST, b.options.Labels)

 	if err := checkDispatchDockerfile(dockerfile.AST); err != nil {

+		buildsFailed.WithValues(metricsDockerfileSyntaxError).Inc()

 		return nil, err

 	}

@@ -150,12 +152,14 @@ func (b *Builder) build(source builder.Source, dockerfile *parser.Result) (*buil

 	}

 	if b.options.Target != "" && !dispatchState.isCurrentStage(b.options.Target) {

+		buildsFailed.WithValues(metricsBuildTargetNotReachableError).Inc()

 		return nil, errors.Errorf("failed to reach build target %s in Dockerfile", b.options.Target)

 	}

 	b.warnOnUnusedBuildArgs()

 	if dispatchState.imageID == "" {

+		buildsFailed.WithValues(metricsDockerfileEmptyError).Inc()

 		return nil, errors.New("No image was generated. Is your Dockerfile empty?")

 	}

 	return &builder.Result{ImageID: dispatchState.imageID, FromImage: dispatchState.baseImage}, nil

@@ -171,6 +175,7 @@ func (b *Builder) dispatchDockerfileWithCancellation(dockerfile *parser.Result)

 		case <-b.clientCtx.Done():

 			logrus.Debug("Builder: build cancelled!")

 			fmt.Fprint(b.Stdout, "Build cancelled")

+			buildsFailed.WithValues(metricsBuildCanceled).Inc()

 			return nil, errors.New("Build cancelled")

 		default:

 			// Not cancelled yet, keep going...

@@ -134,6 +134,7 @@ func (b *Builder) dispatch(options dispatchOptions) (*dispatchState, error) {

 	// To ensure the user is given a decent error message if the platform

 	// on which the daemon is running does not support a builder command.

 	if err := platformSupports(strings.ToLower(cmd)); err != nil {

+		buildsFailed.WithValues(metricsCommandNotSupportedError).Inc()

 		return nil, err

 	}

@@ -155,6 +156,7 @@ func (b *Builder) dispatch(options dispatchOptions) (*dispatchState, error) {

 	processFunc := createProcessWordFunc(options.shlex, cmd, envs)

 	words, err := getDispatchArgsFromNode(ast, processFunc, msg)

 	if err != nil {

+		buildsFailed.WithValues(metricsErrorProcessingCommandsError).Inc()

 		return nil, err

 	}

 	args = append(args, words...)

@@ -163,6 +165,7 @@ func (b *Builder) dispatch(options dispatchOptions) (*dispatchState, error) {

 	f, ok := evaluateTable[cmd]

 	if !ok {

+		buildsFailed.WithValues(metricsUnknownInstructionError).Inc()

 		return nil, fmt.Errorf("unknown instruction: %s", upperCasedCmd)

 	}

 	if err := f(newDispatchRequestFromOptions(options, b, args)); err != nil {

@@ -283,6 +286,7 @@ func checkDispatch(ast *parser.Node) error {

 	// least one argument

 	if upperCasedCmd == "ONBUILD" {

 		if ast.Next == nil {

+			buildsFailed.WithValues(metricsMissingOnbuildArgumentsError).Inc()

 			return errors.New("ONBUILD requires at least one argument")

 		}

 	}

@@ -290,6 +294,6 @@ func checkDispatch(ast *parser.Node) error {

 	if _, ok := evaluateTable[cmd]; ok {

 		return nil

 	}

-

+	buildsFailed.WithValues(metricsUnknownInstructionError).Inc()

 	return errors.Errorf("unknown instruction: %s", upperCasedCmd)

 }

new file mode 100644

@@ -0,0 +1,44 @@

+package dockerfile

+

+import (

+	"github.com/docker/go-metrics"

+)

+

+var (

+	buildsTriggered metrics.Counter

+	buildsFailed    metrics.LabeledCounter

+)

+

+// Build metrics prometheus messages, these values must be initialized before

+// using them. See the example below in the "builds_failed" metric definition.

+const (

+	metricsDockerfileSyntaxError        = "dockerfile_syntax_error"

+	metricsDockerfileEmptyError         = "dockerfile_empty_error"

+	metricsCommandNotSupportedError     = "command_not_supported_error"

+	metricsErrorProcessingCommandsError = "error_processing_commands_error"

+	metricsBuildTargetNotReachableError = "build_target_not_reachable_error"

+	metricsMissingOnbuildArgumentsError = "missing_onbuild_arguments_error"

+	metricsUnknownInstructionError      = "unknown_instruction_error"

+	metricsBuildCanceled                = "build_canceled"

+)

+

+func init() {

+	buildMetrics := metrics.NewNamespace("builder", "", nil)

+

+	buildsTriggered = buildMetrics.NewCounter("builds_triggered", "Number of triggered image builds")

+	buildsFailed = buildMetrics.NewLabeledCounter("builds_failed", "Number of failed image builds", "reason")

+	for _, r := range []string{

+		metricsDockerfileSyntaxError,

+		metricsDockerfileEmptyError,

+		metricsCommandNotSupportedError,

+		metricsErrorProcessingCommandsError,

+		metricsBuildTargetNotReachableError,

+		metricsMissingOnbuildArgumentsError,

+		metricsUnknownInstructionError,

+		metricsBuildCanceled,

+	} {

+		buildsFailed.WithValues(r)

+	}

+

+	metrics.Register(buildMetrics)

+}

@@ -731,13 +731,15 @@ func NewDaemon(config *config.Config, registryService registry.Service, containe

 	// FIXME: this method never returns an error

 	info, _ := d.SystemInfo()

-	engineVersion.WithValues(

+	engineInfo.WithValues(

 		dockerversion.Version,

 		dockerversion.GitCommit,

 		info.Architecture,

 		info.Driver,

 		info.KernelVersion,

 		info.OperatingSystem,

+		info.OSType,

+		info.ID,

 	).Set(1)

 	engineCpus.Set(float64(info.NCPU))

 	engineMemory.Set(float64(info.MemTotal))

@@ -6,7 +6,7 @@ var (

 	containerActions          metrics.LabeledTimer

 	imageActions              metrics.LabeledTimer

 	networkActions            metrics.LabeledTimer

-	engineVersion             metrics.LabeledGauge

+	engineInfo                metrics.LabeledGauge

 	engineCpus                metrics.Gauge

 	engineMemory              metrics.Gauge

 	healthChecksCounter       metrics.Counter

@@ -26,12 +26,14 @@ func init() {

 		containerActions.WithValues(a).Update(0)

 	}

 	networkActions = ns.NewLabeledTimer("network_actions", "The number of seconds it takes to process each network action", "action")

-	engineVersion = ns.NewLabeledGauge("engine", "The version and commit information for the engine process", metrics.Unit("info"),

+	engineInfo = ns.NewLabeledGauge("engine", "The information related to the engine and the OS it is running on", metrics.Unit("info"),

 		"version",

 		"commit",

 		"architecture",

-		"graph_driver", "kernel",

-		"os",

+		"graphdriver",

+		"kernel", "os",

+		"os_type",

+		"daemon_id", // ID is a randomly generated unique identifier (e.g. UUID4)

 	)

 	engineCpus = ns.NewGauge("engine_cpus", "The number of cpus that the host system of the engine has", metrics.Unit("cpus"))

 	engineMemory = ns.NewGauge("engine_memory", "The number of bytes of memory that the host system of the engine has", metrics.Bytes)