mongodb启动时报错ERROR: child process failed, exited with error number 1

　　不多说，直接上干货！

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Ubuntu14.04下Mongodb安装部署步骤（图文详解）

Ubuntu16.04下Mongodb安装部署步骤（图文详解）

root@zhouls-virtual-machine:/usr/local/mongodb/bin# ls
bsondump  mongodump    mongoimport  mongoreplay   mongostat
mongo     mongoexport  mongooplog   mongorestore  mongotop
mongod    mongofiles   mongoperf    mongos
root@zhouls-virtual-machine:/usr/local/mongodb/bin# ./mongod --dbpath=/usr/local/mongodb/data/ --fork --logpath=/usr/local/mongodb/log
about to fork child process, waiting until server is ready for connections.
forked process: 5784
ERROR: child process failed, exited with error number 1
root@zhouls-virtual-machine:/usr/local/mongodb/bin# 

失败的原因

　　是因为通过service MongoDB restart时启动失败，或者如果是直接kill 掉来关闭都会出现这种情况

　 是因为没有正常关闭导致的。

　　是因为你的配置目录，是否应该要是log配置文件，而很多人都写成了log目录。

解决办法

zhouls@zhouls-virtual-machine:~$ sudo  ufw disable
[sudo] password for zhouls:
Firewall stopped and disabled on system startup
zhouls@zhouls-virtual-machine:~$ 

root@zhouls-virtual-machine:/usr/local/mongodb# ls
bin  data  GNU-AGPL-3.0  log  MPL-  README  THIRD-PARTY-NOTICES
root@zhouls-virtual-machine:/usr/local/mongodb# rm -rf log/
root@zhouls-virtual-machine:/usr/local/mongodb# ls
bin  data  GNU-AGPL-3.0  MPL-  README  THIRD-PARTY-NOTICES
root@zhouls-virtual-machine:/usr/local/mongodb# touch log
root@zhouls-virtual-machine:/usr/local/mongodb# cd bin
root@zhouls-virtual-machine:/usr/local/mongodb/bin# pwd
/usr/local/mongodb/bin
root@zhouls-virtual-machine:/usr/local/mongodb/bin# ls
bsondump  mongodump    mongoimport  mongoreplay   mongostat
mongo     mongoexport  mongooplog   mongorestore  mongotop
mongod    mongofiles   mongoperf    mongos
root@zhouls-virtual-machine:/usr/local/mongodb/bin# ./mongod --dbpath=/usr/local/mongodb/data/ --fork --logpath=/usr/local/mongodb/log
about to fork child process, waiting until server is ready for connections.
forked process: 
child process started successfully, parent exiting
root@zhouls-virtual-machine:/usr/local/mongodb/bin#