当我尝试在CentOS上运行我的mongod服务器时，npm start的结果是这个错误：
root@server[Taxi]# npm start
> vframework@0.0.1 start /home/user/public_html/Taxi
> node server
/home/user/public_html/Taxi/node_modules/mongodb/node_modules/mongodb-core/lib/error.js:72
const MongoParseError = function(message) {
^^^^^
mongod的版本是2.4.14，当我运行#mongod -v命令时出现此错误
root@server [Taxi]# mongod -v
Fri Mar 30 19:07:42.038 BackgroundJob starting: DataFileSync
Fri Mar 30 19:07:42.038 versionArrayTest passed
Fri Mar 30 19:07:42.069 shardKeyTest passed
Fri Mar 30 19:07:42.069 isInRangeTest passed
Fri Mar 30 19:07:42.069 shardObjTest passed
Fri Mar 30 19:07:42.096 [initandlisten] MongoDB starting : pid=24586 port=27017 dbpath=/data/db/ 64-bit host=server
Fri Mar 30 19:07:42.096 [initandlisten] db version v2.4.14
Fri Mar 30 19:07:42.096 [initandlisten] git version: nogitversion
Fri Mar 30 19:07:42.096 [initandlisten] build info: Linux buildvm-11.phx2.fedoraproject.org 4.7.2-201.fc24.x86_64 #1 SMP Fri Aug 26 15:58:40 UTC 2016 x86_64 BOOST_LIB_VERSION=1_41
Fri Mar 30 19:07:42.096 [initandlisten] allocator: tcmalloc
Fri Mar 30 19:07:42.096 [initandlisten] options: { verbose: true }
Fri Mar 30 19:07:42.138 [initandlisten] User Assertion: 10310:Unable to lock file: /data/db/mongod.lock. Is a mongod instance already running?
Fri Mar 30 19:07:42.176 [initandlisten] exception in initAndListen: 10310 Unable to lock file: /data/db/mongod.lock. Is a mongod instance already running?, terminating
Fri Mar 30 19:07:42.177 dbexit:
Fri Mar 30 19:07:42.177 [initandlisten] shutdown: going to close listening sockets...
Fri Mar 30 19:07:42.177 [initandlisten] shutdown: going to flush diaglog...
Fri Mar 30 19:07:42.177 [initandlisten] shutdown: going to close sockets...
Fri Mar 30 19:07:42.177 [initandlisten] shutdown: waiting for fs preallocator...
Fri Mar 30 19:07:42.177 [initandlisten] shutdown: lock for final commit...
Fri Mar 30 19:07:42.177 [initandlisten] shutdown: final commit...
Fri Mar 30 19:07:42.177 [initandlisten] shutdown: closing all files...
Fri Mar 30 19:07:42.179 [initandlisten] closeAllFiles() finished
Fri Mar 30 19:07:42.179 dbexit: really exiting now
我在路径/ etc / fo中添加了mongod.config文件，指定服务器地址，这就是它的内容
root@server [etc]# cat mongod.conf
logpath=/var/log/mongo/mongod.log
port=27027
bind_ip=0.0.0.0
dbpath=/var/lib/mongo
replSetName: rs0