ERROR: child process failed, exited with error number 100

[root@localhost ~]# mongod --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/logs --logappend  --port= --fork
about to fork child process, waiting until server is ready for connections.
forked process:
ERROR: child process failed, exited with error number
To see additional information in this output, start without the "--fork" option.

创建data目录

cd /usr/local/mongodb/
mkdir data

再次启动即可成功

[root@localhost mongodb]# mongod --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/logs --logappend  --port= --fork
about to fork child process, waiting until server is ready for connections.
forked process:
child process started successfully, parent exiting

参考：

https://blog.csdn.net/sinat_30397435/article/details/50774175

https://blog.csdn.net/mangoyiy/article/details/79302711