配置MongoDB时报错：

Error parsing INI config file: the argument (''true'             
 ') for option 'fork' is invalid. Valid choices are 'on|off', 'yes|no', 
'1|0' and 'true|false'

 看一下自己的配置文件：

dbpath=/usr/local/mongodb/data/db  
fork=true 
logpath=/usr/local/mongodb/log/mongodb.log  
logappend=true
bind_ip=192.168.2.139
port=27051

 没毛病呀，去官网上看原配置文件：

systemLog:
   destination: file
   path: "/var/log/mongodb/mongod.log"
   logAppend: true
storage:
   journal:
      enabled: true
processManagement:
   fork: true
net:
   bindIp: 127.0.0.1
   port: 27017
setParameter:
   enableLocalhostAuthBypass: false
...

人家用用的yaml，不是=

改：

dbpath: /usr/local/mongodb/data/db  
fork: true 
logpath: /usr/local/mongodb/log/mongodb.log  
logappend: true
bind_ip: 192.168.2.139
port: 27051

结果：

Unrecognized option: logappend

我去，写错了：

dbpath: /usr/local/mongodb/data/db  
fork: true 
logpath: /usr/local/mongodb/log/mongodb.log  
logAppend: true
bind_ip: 192.168.2.139
port: 27051