在官网下载安装包:
https://www.mongodb.com/download-center/community
或者通过wget下载
然后下载到本地，解压
[root@xxx test]# ls
mongodb-linux-x86_64-4.0..tgz
[root@xxx test]# tar -zxvf mongodb-linux-x86_64-4.0..tgz
mongodb-linux-x86_64-4.0./README
mongodb-linux-x86_64-4.0./THIRD-PARTY-NOTICES
mongodb-linux-x86_64-4.0./MPL-
mongodb-linux-x86_64-4.0./LICENSE-Community.txt
mongodb-linux-x86_64-4.0./bin/mongodump
mongodb-linux-x86_64-4.0./bin/mongorestore
mongodb-linux-x86_64-4.0./bin/mongoexport
mongodb-linux-x86_64-4.0./bin/mongoimport
mongodb-linux-x86_64-4.0./bin/mongostat
mongodb-linux-x86_64-4.0./bin/mongotop
mongodb-linux-x86_64-4.0./bin/bsondump
mongodb-linux-x86_64-4.0./bin/mongofiles
mongodb-linux-x86_64-4.0./bin/mongoreplay
mongodb-linux-x86_64-4.0./bin/mongod
mongodb-linux-x86_64-4.0./bin/mongos
mongodb-linux-x86_64-4.0./bin/mongo
mongodb-linux-x86_64-4.0./bin/install_compass
[root@xxx test]# ls
mongodb-linux-x86_64-4.0. mongodb-linux-x86_64-4.0..tgz
将解压出的文件夹移动到/usr/local/下并且重命名为mongodb
[root@xxx test]# mv mongodb-linux-x86_64-4.0. /usr/local/mongodb/
[root@xxx test]# cd /usr/local/mongodb/
[root@xxx mongodb]# ls
bin LICENSE-Community.txt MPL- README THIRD-PARTY-NOTICES
创建文件夹data
[root@xxx mongodb]# mkdir data
创建文件logs
[root@uJZPqK149888 mongodb]# touch logs
进入/usr/local/mongodb/bin目录下，启动mongodb服务
[root@xxx mongodb]# cd bin
[root@xxx bin]# ls
bsondump install_compass mongo mongod mongodump mongoexport mongofiles mongoimport mongoreplay mongorestore mongos mongostat mongotop
[root@xxx bin]# ./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
进入/usr/local/mongodb/bin目录下，启动客户端
./mongo
环境变量配置
vi /etc/profile
export MONGODB_HOME=/usr/local/mongodb
export PATH=$PATH:$MONGODB_HOME/bin
保存后，重启系统配置
source /etc/profile
这样就不用到文件夹中启动mongo了。
参考：
https://blog.csdn.net/caofeiliju/article/details/80195036
https://blog.csdn.net/rzrenyu/article/details/79472508