Starting the syslog collector along with a docker container

command/syslog_plugin.go

@@ -0,0 +1,43 @@
+package command
+
+import (
+	"os"
+	"strings"
+
+	"github.com/hashicorp/go-plugin"
+
+	"github.com/hashicorp/nomad/client/driver"
+)
+
+type SyslogPluginCommand struct {
+	Meta
+}
+
+func (e *SyslogPluginCommand) Help() string {
+	helpText := `
+	This is a command used by Nomad internally to launch a syslog collector"
+	`
+	return strings.TrimSpace(helpText)
+}
+
+func (s *SyslogPluginCommand) Synopsis() string {
+	return "internal - lanch a syslog collector plugin"
+}
+
+func (s *SyslogPluginCommand) Run(args []string) int {
+	if len(args) == 0 {
+		s.Ui.Error("log output file isn't provided")
+	}
+	logFileName := args[0]
+	stdo, err := os.OpenFile(logFileName, os.O_CREATE|os.O_RDWR|os.O_APPEND, 0666)
+	if err != nil {
+		s.Ui.Error(err.Error())
+		return 1
+	}
+	plugin.Serve(&plugin.ServeConfig{
+		HandshakeConfig: driver.HandshakeConfig,
+		Plugins:         driver.GetPluginMap(stdo),
+	})
+
+	return 0
+}