我正在尝试使用我安装的RIAK（Erlang R16B01版本2.2.0）。但是，当我尝试通过以下方式启动节点时，
sudo dev/dev2/bin/riak start
回复：
!!!!
!!!! WARNING: ulimit -n is 1024; 65536 is the recommended minimum.
!!!!
riak failed to start within 15 seconds,
see the output of 'riak console' for more information.
If you want to wait longer, set the environment variable
WAIT_FOR_ERLANG to the number of seconds to wait.
然而，控制台（总结）说：
config is OK
-config /home/steven/riak-2.2.0/dev/dev2/data/generated.configs/app.2017.03.08.19.41.06.config -args_file /home/steven/riak-2.2.0/dev/dev2/data/generated.configs/vm.2017.03.08.19.41.06.args -vm_args /home/steven/riak-2.2.0/dev/dev2/data/generated.configs/vm.2017.03.08.19.41.06.args
!!!!
!!!! WARNING: ulimit -n is 1024; 65536 is the recommended minimum.
!!!!
Exec: /home/steven/riak-2.2.0/dev/dev2/bin/../erts-5.10.2/bin/erlexec -boot /home/steven/riak-2.2.0/dev/dev2/bin/../releases/2.2.0/riak -config /home/steven/riak-2.2.0/dev/dev2/data/generated.configs/app.2017.03.08.19.41.06.config -args_file /home/steven/riak-2.2.0/dev/dev2/data/generated.configs/vm.2017.03.08.19.41.06.args -vm_args /home/steven/riak-2.2.0/dev/dev2/data/generated.configs/vm.2017.03.08.19.41.06.args -pa /home/steven/riak-2.2.0/dev/dev2/bin/../lib/basho-patches -- console
Root: /home/steven/riak-2.2.0/dev/dev2/bin/..
Usage: beam.smp [flags] [ -- [init_args] ]
The flags are: ...
有谁知道如何解决这个问题？提前谢谢！