Integrate a dictionary to all tasks and loop through it in Ansible - ansible

Question

Hey still kind of new with Ansible.
I made a playbook(test) that will perform a rolling update for a Mariadb galera-cluster that uses a HAproxy as lb.
I have no idea how to use the dictionary(bottom of the code) for all my tasks in the play. Also it has to loop like first server 1 then server 3 then server 2 and then server 4. Idea is that if the host or ip changed that you'll only have to change it in the dictionary.
For example task1 needs to use the key.value of host1 same for task2 and when its done loop to the next host.
I tried to use the vars module but it only worked task
specific. Was thinking of using the Vars folder but I'm not using the roles architecture.
- hosts: DBserver
become: yes
tasks:
- name: disable the haproxy server
replace:
path: /etc/haproxy/haproxy.cfg
regexp: "{{ item }}"
replace: 'server "{{}}" "{{}}" check weight 0'
with_items:
- 'server "{{}}" "{{}}" check weight 1'
- hosts: "{{}}"
become: yes
tasks:
- name: stop the mariadb
service:
name: mariadb
state: stopped
- hosts: DBserver
become: yes
tasks:
replace:
path: /etc/haproxy/haproxy.cfg
regexp: "{{ item }}"
replace: 'server "{{}}}" "{{}}" check weight 1'
with_items:
- 'server "{{}}" "{{}}" check weight 0'
dictionary:
{ 'name': 'host1', 'key': 'ipxxx' }, { 'name': 'host2', 'key': 'ipxxxx' }, { 'name': 'host3', 'key': 'ipxxx' }, { 'name': 'host4', 'key': 'ipxxx' }

Answer 1

I solved my problem with this play.
---
- hosts: clients
become: yes
serial: 1
tasks:
- name: disable the haproxy server
replace:
path: /etc/haproxy/haproxy.cfg
regexp: "{{ item }}"
replace: 'server {{ name }} {{ ip }} check weight 0'
with_items:
- 'server {{ name }} {{ ip }} check weight 1'
delegate_to: deploy
- name: stop the mariadb
service:
name: mariadb
state: stopped
- name: update mariadb
apt:
name: "{{ packages }}"
state: latest
update_cache: yes
vars:
packages:
- mariadb-server
- mariadb-client
- mariadb-common
- name: start the mariadb
service:
name: mariadb
state: started
- name: status mariadb
shell: systemctl status mariadb
register: server_status
- name: debug
debug:
msg: "{{ server_status['stdout_lines'] }}"
- name: enable proxy
replace:
path: /etc/haproxy/haproxy.cfg
regexp: "{{ item }}"
replace: 'server {{ name }} {{ ip }} check weight 1'
with_items:
- 'server {{ name }} {{ ip }} check weight 0'
delegate_to: deploy
I used the host_vars and that did the trick in combination with delegate_to.