Installing Mongo on Linux2

To verify which Linux distribution you are running by running the following command on the command-line:

grep ^NAME  /etc/*release

 This gave like this below 

/etc/os-release:NAME="Amazon Linux"

Below setting in the /etc/yum.repos.d/mongodb-org-5.0.repo  had to be made 

[mongodb-org-5.0]

name=MongoDB Repository

baseurl=https://repo.mongodb.org/yum/amazon/2/mongodb-org/5.0/x86_64/

gpgcheck=1

enabled=1

gpgkey=https://www.mongodb.org/static/pgp/server-5.0.asc

And then sudo yum install -y mongodb-org

Installed the mongo package. 

By default, a MongoDB instance stores:

its data files in /var/lib/mongo

its log files in /var/log/mongodb

To run and manage your mongod process, you will be using your operating system's built-in init system. Recent versions of Linux tend to use systemd (which uses the systemctl command), while older versions of Linux tend to use System V init (which uses the service command).

ps --no-headers -o comm 1

This actually starts the mongo 

sudo systemctl start mongod

This shows whether it is running 

sudo systemctl status mongod

To enable at the system boot, do the below 

sudo systemctl enable mongod

To stop mongo

sudo systemctl stop mongod

To restart mongo

sudo systemctl restart mongod

References:

https://docs.mongodb.com/manual/tutorial/install-mongodb-on-amazon/