The default http port is set on 8086. You can use the command "sed -i 's/8086/any-port-you-want/' conf/server.xml" to change the default port.
To take more focus on the zookeeper cluster on your environment, the setting in this image likes following :
file name: dubbo.properties
So,in most cases you should replace the whole file by "cp /path/dubbo.properties webapps/dubbo-admin/WEB-INF".