启动rabbitmq，提示ERROR: node with name "rabbit" already running on "localhost"

➜  ~ rabbitmq-server
ERROR: node with name "rabbit" already running on "localhost"
➜  ~ ps aux|grep epmd
wangyizhe         949   0.0  0.0  2461372    256   ??  S    二04下午   0:00.99 /usr/local/Cellar/erlang/19.0.2/lib/erlang/erts-8.0.2/bin/epmd -daemon
wangyizhe       14871   0.0  0.0  2424600    432 s001  R+    4:12下午   0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn epmd
➜  ~ ps aux|grep erl
wangyizhe        4519   0.7  0.4  4134296  29636 s000  S    二05下午  12:43.67 /usr/local/Cellar/erlang/19.0.2/lib/erlang/erts-8.0.2/bin/beam.smp -W w -A 64 -P 1048576 -t 5000000 -stbt db -K true -B i -- -root /usr/local/Cellar/erlang/19.0.2/lib/erlang -progname erl -- -home /Users/wangyizhe -- -pa /usr/local/Cellar/rabbitmq/3.6.4/ebin -noshell -noinput -s rabbit boot -sname rabbit@localhost -boot /usr/local/opt/erlang/lib/erlang/bin/start_clean -kernel inet_default_connect_options [{nodelay,true}] -rabbit tcp_listeners [{"127.0.0.1",5672}] -sasl errlog_type error -sasl sasl_error_logger false -rabbit error_logger {file,"/usr/local/var/log/rabbitmq/rabbit@localhost.log"} -rabbit sasl_error_logger {file,"/usr/local/var/log/rabbitmq/rabbit@localhost-sasl.log"} -rabbit enabled_plugins_file "/usr/local/etc/rabbitmq/enabled_plugins" -rabbit plugins_dir "/usr/local/Cellar/rabbitmq/3.6.4/plugins" -rabbit plugins_expand_dir "/usr/local/var/lib/rabbitmq/mnesia/rabbit@localhost-plugins-expand" -os_mon start_cpu_sup false -os_mon start_disksup false -os_mon start_memsup false -mnesia dir "/usr/local/var/lib/rabbitmq/mnesia/rabbit@localhost" -kernel inet_dist_listen_min 25672 -kernel inet_dist_listen_max 25672
wangyizhe        4532   0.0  0.0  2434824    464   ??  Ss   二05下午   0:12.77 erl_child_setup 256
wangyizhe         949   0.0  0.0  2461372    256   ??  S    二04下午   0:00.99 /usr/local/Cellar/erlang/19.0.2/lib/erlang/erts-8.0.2/bin/epmd -daemon
wangyizhe       14897   0.0  0.0  2424600    472 s001  R+    4:12下午   0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn erl
➜  ~ kill -9 4519
➜  ~ rabbitmq-server

              RabbitMQ 3.6.4. Copyright (C) 2007-2016 Pivotal Software, Inc.
  ##  ##      Licensed under the MPL.  See http://www.rabbitmq.com/
  ##  ##
  ##########  Logs: /usr/local/var/log/rabbitmq/rabbit@localhost.log
  ######  ##        /usr/local/var/log/rabbitmq/rabbit@localhost-sasl.log
  ##########
              Starting broker...
 completed with 10 plugins.