job_conf.xml chronos destination

job_conf.xml

<?xml version="1.0"?>
<job_conf>
    <plugins>
        <plugin id="local" type="runner" load="galaxy.jobs.runners.local:LocalJobRunner" workers="4"/>
        <plugin id="chronos" type="runner" load="galaxy.jobs.runners.chronos:ChronosJobRunner" workers="4">
            <param id="chronos">hostaname and port</param>
            <!-- Hostname which runs Chronos instance. -->
            <param id="owner">pietro.mandreoli@gmail.com</param>
            <!-- The email address of the person responsible for the job. -->
            <param id="username"></param>
            <!-- Username to access Mesos cluster. -->
            <param id="password"></param>
            <!-- Password to access Mesos cluster. -->
            <param id="insecure">false</param>
            <!-- True to communicate with Chronos over HTTPS; false otherwise-->
        </plugin>
    </plugins>
    <handlers default="handlers">
        <handler id="handler0" tags="handlers"/>
        <handler id="handler1" tags="handlers"/>
        <handler id="handler2" tags="handlers"/>
        <handler id="handler3" tags="handlers"/>
    </handlers>
    <destinations default="chronos_dest">
        <destination id="local" runner="local">
		<param id="local_slots">2</param>
	</destination>
       <destination id="chronos_dest" runner="chronos">
            <param id="docker_enabled">true</param>
            <param id="docker_memory">512</param>
            <param id="docker_set_user">galaxy</param>
	    <param id="docker_cpu">2</param>
	    <param id="volumes">/export/galaxy/database/</param>
            <param id="max_retries">2</param>
        </destination>
    </destinations>
    <tools>
	<tool id="upload1" destination="local"/>
    </tools>

    <limits>
	<limit type="registered_user_concurrent_jobs">100</limit>
        <limit type="unregistered_user_concurrent_jobs">0</limit>
	<limit type="job_walltime">72:00:00</limit>
       	<limit type="output_size">268435456000</limit> 
    </limits>
</job_conf>