centos.yaml

#prerequisite create paramaters for monitoring agent paramater url and hostname 

Metadata:
  AWS::CloudFormation::Interface:
    ParameterGroups:
      - Label:
          default: "Required Parameters"
	    - monitoring_agent_package
	    - hostname
			
   Userdata:
     "Fn::Base64": !Sub |
      #!/bin/bash -x
      
      #install dependencies aws-cli & python pip as ubuntu will not be python package
      yum install aws-cli -y
      yum install python pip -y
      curl "https://bootstrap.pypa.io/get-pip.py" -o "get-pip.py"
      python get-pip.py
      # Install Python add-ons:
      sudo pip install pystache
      sudo pip install argparse
      sudo pip install python-daemon
      sudo pip install requests
		  
      #install cloud-init packages
	yum install tar -y
	rpm -Uvh https://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm 
	yum install cloud-init
	
Metadata:
  AWS::CloudFormation::Init:
    config:
	  packages:
		apt-get:
		  monitoring-agent: !Sub ${monitoring_agent_package}    #pass the monitoring agent rpm url/s3 bucket url/NFS share/EFS share
		apt:
		 # The name of the repository
		  monitoring-agent:
			- arches: [default]
				search:
					- http://monitoring_agent_package
			
		files:
		  /etc/hosts:
			content: !Sub |
			  x.x.x.x    ${hostname}           #set hostname for the server
	      /etc/mon-agent/agent.conf
			content: !Sub |
			  hostname    ${hostname}
		aws:
		  preserve_hostname: true
          hostname: ${hostname}
				
		#group and user creation
		groups:
		  - mystaff: [alice,bob]
	
		users:
		  - name: alice
			groups: admin, users
			sudo: "ALL=(ALL) NOPASSWD:ALL"
			shell: /bin/bash
		  - name: bob
			groups: admin, users 
			sudo: "ALL=(ALL) NOPASSWD:ALL"
			shell: /bin/bash