You can also use a RoutePolicy to control routes in master/slave mode.

When doing so you must configure the route policy with

A little example

    MasterRoutePolicy master = new MasterRoutePolicy();
    master.setZooKeeperUrl("localhost:2181");
    master.setGroupName("myGroup");

    // its import to set the route to not auto startup
    // as we let the route policy start/stop the routes when it becomes a master/slave etc
    from("file:target/inbox?delete=true").noAutoStartup()
        // use the zookeeper master route policy in the clustered group
        // to run this route in master/slave mode
        .routePolicy(master)
        .log(name + " - Received file: ${file:name}")
        .delay(delay)
        .log(name + " - Done file:     ${file:name}")
        .to("file:target/outbox");