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duenni
Asked: 2017-11-16 03:03:14 +0800 CST

Ansible - several server reboots with many include_tasks

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Got an ansible role which consists of many tasks. Therefore these tasks are split up in seperate files for better traceability.

folder roles/myrole/tasks/:

step1.yml 
step2.yml
... 
step10.yml
main.yml

The main task only consists of included tasks.

roles/myrole/tasks/main.yml:

- include_tasks: step1.yml
- include_tasks: step2.yml
...
- include_tasks: step10.yml

site.yml

- name: Deploy myrole
  hosts: rolehosts
  remote_user: roleuser

  roles:
  - myrole

The server has to be rebooted several times during deployment. For now every task file contains tasks like this:

- name: Step 10 - reboot
  become: true
  shell: sleep 2 && shutdown -r now
  async: 1
  poll: 0

- name: Step 10 - wait for server to return after reboot
  wait_for: >
    host={{ ansible_default_ipv4.address }}
    port=22
    delay=10
    timeout=120
delegate_to: localhost

So instead of rewriting these tasks over and over again in every stepX.yml it seems practical to use a handler instead. But handlers only get executed at the end of a play which is not practical in this case when the server has to be rebooted for example in the middle of step 5. To avoid this I could use a flush_handlers task in every step.

I don't see the profit here. Instead of rewriting the reboot tasks in every step I would rewrite the flus_handlers task in every step.

Is there a better way to do this?

The server needs to be reliably rebooted at certain points in every step. The playbook should continue executing when the server is online again.

debian

1 Answers

  1. Something like this?

    Keep in mind that this is a kind of pseudo-code, just to point out sequence of events.

    step_and_reboot.yml

    - import_tasks: "{{ step_name }}.yml"
- shell: shutdown -r now
- local_action: wait_for

    main.yml

    - include_tasks: step_and_reboot.yml
  with_items:
    - step1
    - step2
    - step3
  loop_control:
    loop_var: step_name
    • 1