I have been fighting with this issue for days. I have been trying to avoid
roles, since my setup seems pretty simple.
Not even sure if roles are needed. You can find this question on
stackoverflow
<http://stackoverflow.com/questions/35293566/ansible-how-handle-servers-on-the-same-host>
as well.
*My problem*
Here's my inventory:
[development]
web_server ansible_connection=docker
db_server ansible_connection=docker
[staging]
web_server ansible_host=20.20.20.20 ansible_user=tom ansible_connection=ssh
db_server ansible_host=20.20.20.20 ansible_user=tom ansible_connection=ssh
[production]
web_server ansible_host=10.10.10.10 ansible_user=tom ansible_connection=ssh
db_server ansible_host=10.10.10.10 ansible_user=tom ansible_connection=ssh
My issue now is that I can't figure a way of having my three playbooks:
*production.yml,
staging.yml, development.yml* to resolve the web_server and db_server
aliases to the appropriate machines. I want to use those aliases throughout
my tasks and playbooks for consistency but nothing seems to work.
*Things I've tried*
This solution doesn't work since it runs all tasks twice!
---
- hosts: staging
tasks:
- name: Setup web server
command: uptime
delegate_to: web_server
- name: Setup db server
command: ls
delegate_to: db_server
This solution solves the above problem but it prints the wrong alias (
web_server even when running the db task).
---
- hosts: staging
run_once: true
tasks:
- name: Setup web servers
command: uptime
delegate_to: web_server
- name: Setup db servers
command: ls
delegate_to: db_server
This solution suggested by someone at stackoverflow doesn't work either
(although without errors). web_server and db_server resolve to the wrong
machine.
---
- hosts: staging:web_server
tasks:
- name: Deploy to web server
command: uptime
---
- hosts: staging:db_server
tasks:
- name: Deploy to db server
command: ls
This solution would be ideal but Ansible does not support access to an
individual host from a group from what I know:
---
- hosts: web_server
tasks:
- name: Setup web server
command: uptime
- hosts: db_server
tasks:
- name: Setup db server
command: ls
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