return env.IsSet("MINIO_ACCESS_KEY_FILE")
	}

	// Log error, as we will not propagate it to caller
	internalLogIf(GlobalContext, err)

	return err == nil
}

// IsDCOS returns true if minio is running in DCOS.
func IsDCOS() bool {
	// http://mesos.apache.org/documentation/latest/docker-containerizer/
	// Mesos docker containerizer sets this value
	return env.Get("MESOS_CONTAINER_NAME", "") != ""
}

}

// Tests if the environment we are running is in DCOS.
func TestIsDCOS(t *testing.T) {
	t.Setenv("MESOS_CONTAINER_NAME", "mesos-1111")
	dcos := IsDCOS()
	if !dcos {
		t.Fatalf("Expected %t, got %t", true, dcos)
	}
	os.Unsetenv("MESOS_CONTAINER_NAME")
	dcos = IsDCOS()
	if dcos {
		t.Fatalf("Expected %t, got %t", false, dcos)
	}
}

// Tests if the environment we are running is in kubernetes.