Ansible: read csv file line by line and render it to template with loop - ansible

Question

I am using a csv file to get data and render it to template and copy to remote servers. I am facing issue that CSV file read twice for same server and this results in loop to copy last line in each server instead of 1st line in first server and second on second servers and so on...
test.csv file:
Application,env,Datacenter,Hostname
Microsoft,Test,DC1,testserver1
Apple,Test,DC2,testserver2
main.yml:
- name: read csv
read_csv:
path: /u00/app/monitor/test.csv
key: Hostname
register: newrelic
- name: Print newrelic var
ansible.builtin.debug:
var: newrelic.dict[inventory_hostname]
- name: copy template
template:
src: /u00/ansible/Playbooks/files/infra-config.yml_template
dest: /u00/app/monitor/infra-config.yml
loop: "{{ newrelic.list }}"
- name: Start the New Relic Service
ansible.builtin.systemd:
name: newrelic-infra.service
state: started
become: yes
become_user: root
Template:
custom_attributes:
application : {{ item.Application }}
env : {{ item.env }}
datacenter : {{ item.Datacenter }}
log:
file: /u00/app/monitor/infra.log
Expected result is to get first entry in csv in testserver1 and second line in testserver2
**ssh admin#testserver1 - **
cat infra-config.yml
custom_attributes:
application : Microsoft
env : Test
datacenter : DC1
log:
file: /u00/app/monitor/infra.log
**ssh admin#testserver2- **
custom_attributes:
application : Apple
env : Test
datacenter : DC2
log:
file: /u00/app/monitor/infra.log
but I am getting
**ssh admin#testserver1 -**
cat infra-config.yml
custom_attributes:
application : Apple
env : Test
datacenter : DC2
log:
file: /u00/app/monitor/infra.log
**
ssh admin#testserver2- **
custom_attributes:
application : Apple
env : Test
datacenter : DC2
log:
file: /u00/app/monitor/infra.log

Answer 1

Given the CSV file on the controller
shell> cat /tmp/test.csv
Application,env,Datacenter,Hostname
Microsoft,Test,DC1,testserver1
Apple,Test,DC2,testserver2
The project below
shell> tree .
.
├── ansible.cfg
├── hosts
├── infra-config.yml.j2
└── pb.yml
0 directories, 4 files
shell> cat ansible.cfg
[defaults]
gathering = explicit
collections_path = $HOME/.local/lib/python3.9/site-packages/
inventory = $PWD/hosts
roles_path = $PWD/roles
remote_tmp = ~/.ansible/tmp
retry_files_enabled = false
stdout_callback = yaml
shell> cat hosts
[test]
testserver1 ansible_host=10.1.0.61
testserver2 ansible_host=10.1.0.63
[test:vars]
ansible_connection=ssh
ansible_user=admin
ansible_become=yes
ansible_become_user=root
ansible_become_method=sudo
ansible_python_interpreter=/usr/local/bin/python3.8
ansible_perl_interpreter=/usr/local/bin/perl
The playbook
shell> cat pb.yml
- hosts: all
tasks:
- block:
- read_csv:
path: /tmp/test.csv
key: Hostname
register: newrelic
- debug:
var: newrelic
delegate_to: localhost
run_once: true
- template:
src: infra-config.yml.j2
dest: /tmp/infra-config.yml
vars:
_data: "{{ newrelic.dict[inventory_hostname] }}"
shell> cat infra-config.yml.j2
custom_attributes:
application : {{ _data.Application }}
env : {{ _data.env }}
datacenter : {{ _data.Datacenter }}
log:
file: /u00/app/monitor/infra.log
creates the configuration files at the remote hosts
shell> ansible-playbook pb.yml
PLAY [all] ***********************************************************************************
TASK [read_csv] ******************************************************************************
ok: [testserver1 -> localhost]
TASK [debug] *********************************************************************************
ok: [testserver1 -> localhost] =>
newrelic:
changed: false
dict:
testserver1:
Application: Microsoft
Datacenter: DC1
Hostname: testserver1
env: Test
testserver2:
Application: Apple
Datacenter: DC2
Hostname: testserver2
env: Test
failed: false
list: []
TASK [template] ******************************************************************************
changed: [testserver1]
changed: [testserver2]
PLAY RECAP ***********************************************************************************
testserver1: ok=3 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
testserver2: ok=1 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
shell> ssh admin#10.1.0.61 cat /tmp/infra-config.yml
custom_attributes:
application : Microsoft
env : Test
datacenter : DC1
log:
file: /u00/app/monitor/infra.log
shell> ssh admin#10.1.0.63 cat /tmp/infra-config.yml
custom_attributes:
application : Apple
env : Test
datacenter : DC2
log:
file: /u00/app/monitor/infra.log