how to get the server Site & location name get automatically when playbook will run

[Karn Kumar]

I'm instaling collectd service using ansible version 2.4 and making some changes into the colectd config and that's working fine.

In my playbook i'm using `lineinfile` module to make the chnages in the collectd confg file using the regex , here i have two `lineinfile` chnages one is to chnage 

the default Hostname from the config file using `ansible_hostname` variable while in another line i have some Prefix's which i'm changing and that the Key point for my playbook..

For clarification belwo the line where i need the playbook to be opting the values dynamically 

Example:

a) this is what is value looks like

Prefix  "collectd.<ServiceName>.<Changable_StateName>.<Changable_location>"

b) this is what i'm appending values manually in my play as of now ..

Prefix "collectd.OpenDJ.EMEA.sophia.

My Invetory looks like as follows( this is based on host:var and using private keys over)

----------------------------------------------------------------------------------------

[hosts]

dbserver-bijing

dbserver-endicott

dbserver-delhi

[hosts:vars]

ansible_ssh_user=root

ansible_ssh_private_key_file=/root/ansiblseckeys

Changable_StateName :

--------------------

EMEA

APAC

NA

IN

Changable_location

------------------

sophia

bijing

endicott

delhi

Below is my Playboook peice which makes the changes ...

-----------------------------------------------------

 - name: Committing changes to collectd configuration....

    lineinfile:

      dest: "{{ item.dest }}"

      regexp: "{{ item.regexp }}"

      line: "{{ item.line }}"

      backrefs: yes

    with_items:

      - { dest: '/opt/collectd/etc/collectd.conf', regexp: '#Hostname    "dbserver-repo"', line: 'Hostname  "{{ ansible_hostname }}"' }

      - { dest: '/opt/collectd/etc/collectd.conf', regexp: '#    Prefix "collectd.unix."', line: '    Prefix "collectd.OpenDJ.EMEA.sophia."' }

So, the problem is , when i run my playbook each time hostname gets chnages and same as the `stateName` and `statelocation`.

Hence looing around to spin these type of chnage in the playbook.