MongoDB——shutting down with code

按照README文档,解压完mongodb压缩文件之后执行./mongod
输入启动命令，出现如下情况：
./mongod

017-05-03T02:44:28.693-0700 I CONTROL [initandlisten] MongoDB starting : pid=2286 port=27017 dbpath=/data/db 64-bit host=ubuntu 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] db version v3.4.4 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] git version: 888390515874a9debd1b6c5d36559ca86b44babd 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.2g-fips 1 Mar 2016 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] allocator: tcmalloc 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] modules: none 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] build environment: 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] distmod: ubuntu1604 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] distarch: x86_64 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] target_arch: x86_64 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] options: {} 
2017-05-03T02:44:28.694-0700 I STORAGE [initandlisten] exception in initAndListen: 29 Data directory /data/db not found., terminating 
2017-05-03T02:44:28.694-0700 I NETWORK [initandlisten] shutdown: going to close listening sockets... 
2017-05-03T02:44:28.694-0700 I NETWORK [initandlisten] shutdown: going to flush diaglog... 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] now exiting 
2017-05-03T02:44:28.694-0700 I CONTROL [initandlisten] shutting down with code:100 

出现错误，shutting down with code:100。
通过运行：
sudo ./mongod解决，启动之后可通过

netstat -lanp | grep "27017" 

查看是否正常启动

tcp        0      0 0.0.0.0:27017           0.0.0.0:*               LISTEN      -     
 
 
unix  2      [ ACC ]     STREAM     LISTENING     27064    -                   /