1.vi /etc/yum.repos.d/mongodb-org-3.2.repo

[mongodb-org-3.2]  
name=MongoDB Repository 
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/ 
gpgcheck=0 
enabled=1 

2.sudo yum install -y mongodb-org

3.sudo service mongod start