To find latest MongoDB version, see
https://docs.mongodb.com/manual/release-notes/
To install MongoDB 3.6 on CentOS 7, create file
vi /etc/yum.repos.d/mongodb-org-3.6.repo
Add
[mongodb-org-3.6] name=MongoDB Repository baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.6/x86_64/ gpgcheck=1 enabled=1 gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc
Refer https://docs.mongodb.com/master/tutorial/install-mongodb-on-red-hat/
Now install MongoDB with
yum install mongodb-org
Enable MongoDB start on boot with
systemctl enable MongoDB
To start MongoDB, run
systemctl start mongod
You can check status of MongoDB with
systemctl status mongod