Create a playbook called balance.yml as follows:

* The playbook contains a play that runs on hosts in balancers host group and uses

the balancer role.

--> This role configures a service to loadbalance webserver requests between hosts

in the webservers host group.curl

--> When implemented, browsing to hosts in the balancers host group (for example

http://node5.example.com) should produce the following output:

Welcome to node3.example.com on 192.168.10.z

--> Reloading the browser should return output from the alternate web server:

Welcome to node4.example.com on 192.168.10.a

* The playbook contains a play that runs on hosts in webservers host group and uses

the phphello role.

--> When implemented, browsing to hosts in the webservers host group with the URL /

hello.php should produce the following output:

Hello PHP World from FQDN

--> where FQDN is the fully qualified domain name of the host. For example,

browsing to http://node3.example.com/hello.php, should produce the following output:

Hello PHP World from node3.example.com

* Similarly, browsing to http://node4.example.com/hello.php, should produce the

following output:

Hello PHP World from node4.example.com