centos 部署mongodb 服务器。 启动命令

/usr/local/mongodb/bin/mongod --bind_ip 内网ip 或127.0.0.1 --port 27017 --maxConns 20000 --dbpath=/usr/local/mongodb/db --logpath=/usr/local/mongodb/log/mongo.log --logappend &
;;

可以启动成功。

/usr/local/mongodb/bin/mongod --bind_ip 外网ip --port 27017 --maxConns 20000 --dbpath=/usr/local/mongodb/db --logpath=/usr/local/mongodb/log/mongo.log --logappend &
;;

启动失败
[ 防火墙已关闭，27017端口也开启]
错误日志：
[initandlisten] listen(): bind() failed errno:99 Cannot assign requested address for socket: 外网ip:27017
[initandlisten] journal dir=/usr/local/mongodb/db/journal
Durability thread stopped