max virtual memory areas (docker-library/elasticsearch#111)

cmd/amp/platform_infrastructure.go

@@ -4,6 +4,9 @@ import (
 	"github.com/appcelerator/amp/config"
 	"github.com/docker/docker/api/types/mount"
 	"github.com/docker/docker/api/types/swarm"
+
+	"os"
+	"os/exec"
 )
 
 const (
@@ -675,3 +678,15 @@ func getAMPInfrastructureStack(m *ampManager) *ampStack {
 	//return stack
 	return &stack
 }
+
+func systemPrerequisites(m *ampManager) (err error) {
+	goos := os.Getenv("GOOS")
+	if goos == "linux" {
+		cmd := exec.Command("sysctl", "-w", "vm.max_map_count=262144")
+		if m.verbose {
+			m.printf(colRegular, "setting max virtual memory areas")
+		}
+		err = cmd.Run()
+	}
+	return nil
+}

cmd/amp/platform_start.go

@@ -57,6 +57,10 @@ func startAMP(cmd *cobra.Command, args []string) error {
 			manager.printf(colWarn, "Mode force: start anyway\n")
 		}
 	}
+	if err := systemPrerequisites(manager); err != nil {
+		manager.printf(colError, "Prerequisite error: %v\n", err)
+		os.Exit(1)
+	}
 	if err := manager.start(stack); err != nil {
 		manager.printf(colError, "Start error: %v\n", err)
 		if err := manager.stop(stack); err != nil {