mac 安装和使用MongoDB
https://www.jianshu.com/p/7241f7c83f4a
mongodb在mac sudo mkdir -p /data/db 时提示 Read-only file system
https://www.cnblogs.com/HoverM/p/11897638.html
https://www.jianshu.com/p/7241f7c83f4a
https://www.cnblogs.com/HoverM/p/11897638.html