我正在开发我使用MongoDB作为我的数据库，我使用以下命令在云端9上安装终端。
$ sudo apt-get install -y mongodb-org
$ mkdir data
$ echo 'mongod --bind_ip=$IP --dbpath=data --nojournal --rest "$@"' > mongod
$ chmod a+x mongod
$ ./mongod
这很好，我完成后关闭了终端。然后我回到它，我只是输入：$ ./mongod以运行该程序，但它给了我以下错误：
2017-12-24T07:02:40.787+0000 ** WARNING: --rest is specified without --httpinterface,
2017-12-24T07:02:40.787+0000 ** enabling http interface
warning: bind_ip of 0.0.0.0 is unnecessary; listens on all ips by default
2017-12-24T07:02:40.790+0000 [initandlisten] MongoDB starting : pid=15545 port=27017 dbpath=data 64-bit host=traorefly-real-5786569
2017-12-24T07:02:40.790+0000 [initandlisten] db version v2.6.12
2017-12-24T07:02:40.790+0000 [initandlisten] git version: d73c92b1c85703828b55c2916a5dd4ad46535f6a
2017-12-24T07:02:40.790+0000 [initandlisten] build info: Linux build5.ny.cbi.10gen.cc 2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Jan 3 21:39:27 UTC 2014 x86_64 BOOST_LIB_VERSION=1_49
2017-12-24T07:02:40.790+0000 [initandlisten] allocator: tcmalloc
2017-12-24T07:02:40.790+0000 [initandlisten] options: { net: { bindIp: "0.0.0.0", http: { RESTInterfaceEnabled: true, enabled: true } }, storage: { dbPath: "data", journal: { enabled: false } } }
2017-12-24T07:02:40.811+0000 [initandlisten] ERROR: listen(): bind() failed errno:98 Address already in use for socket: 0.0.0.0:27017
2017-12-24T07:02:40.811+0000 [initandlisten] ERROR: addr already in use
2017-12-24T07:02:40.811+0000 [initandlisten] ERROR: listen(): bind() failed errno:98 Address already in use for socket: 0.0.0.0:28017
2017-12-24T07:02:40.811+0000 [initandlisten] ERROR: addr already in use
2017-12-24T07:02:40.814+0000 [initandlisten] now exiting
2017-12-24T07:02:40.814+0000 [initandlisten] dbexit:
2017-12-24T07:02:40.814+0000 [initandlisten] shutdown: going to close listening sockets...
2017-12-24T07:02:40.814+0000 [initandlisten] shutdown: going to flush diaglog...
2017-12-24T07:02:40.814+0000 [initandlisten] shutdown: going to close sockets...
2017-12-24T07:02:40.814+0000 [initandlisten] shutdown: waiting for fs preallocator...
2017-12-24T07:02:40.814+0000 [initandlisten] shutdown: closing all files...
2017-12-24T07:02:40.814+0000 [initandlisten] closeAllFiles() finished
2017-12-24T07:02:40.814+0000 [initandlisten] shutdown: removing fs lock...
2017-12-24T07:02:40.814+0000 [initandlisten] dbexit: really exiting now
有些人说要删除在数据文件中创建的*mongod.lock然后使用--repair然后运行它但它仍然无效。
您正在启动一个mongod实例，而其中一个已经在后台运行。您可以使用ps -A查找mongod进程，然后使用kill <process id>来杀死该实例。
如果该端口被任何其他进程阻止，您可以找到：lsof -i :27017
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
mongod 30284 ubuntu 5u IPv4 447749095 0t0 TCP *:27017 (LISTEN)