Install ONLY mongo shell, not mongodb

1. Create a repository file at sudo vim /etc/yum.repos.d/mongodb.repo

[mongodb-org-4.0]
name=MongoDB Repository 
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/4.0/x86_64/
gpgkey=https://www.mongodb.org/static/pgp/server-4.0.asc
gpgcheck=1 
enabled=1 

2. sudo yum clean all

3. sudo yum install mongodb-org-shell-4.0.2

4. mongo <mongo-server-ip> Note: Step 4 will not work in all cases. You need to check proper command to connect to remote mongo server.

Source: https://docs.mongodb.com/manual/tutorial/install-mongodb-on-red-hat/

Official documentation says that you should be fine installing mongodb-org-shell only.

Please follow below steps.

1. Create a file /etc/yum.repos.d/mongodb.repo

2. Update the above file to contain:

   [mongodb]
   name=MongoDB Repository  
   baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64/  
   gpgcheck=0
   enabled=1
   

3. sudo yum install -y mongodb-org-shell-2.6.9

4. mongo mongo-db_server_IP:27017/database_name -u username -p password

You can follow the official tutorial on installing mongodb, and instead of installing the main package that will install all the packages, just install the package containing mongoshell