Re: [ansible-devel] How to run entire playbook sequential against inventory

[Mike Sawyers]

Hi Jonin,

Sound like you have something like this and you want to group and batch the hosts?

---

   name: first webservers play

   hosts: Webservers

   tasks

  name: Nodes play

  hosts: nodes

  tasks

  name: Post nodes tasks

  hosts: webservers

  tasks

If I'm not misunderstanding that sounds like you want rolling updates. Have you looked at this page yet?

https://docs.ansible.com/ansible/latest/user_guide/guide_rolling_upgrade.html  

On Sat, Aug 22, 2020 at 4:47 AM jonin <sebastia...@gmail.com> wrote:

Hi,

I have a playbook which is running against this type of structured inventory file

# Ansible Inventory

[webservers]

host1

host2

[nodes]

host3

host4

[all:vars]

#############################

The playbook needs to effectively run three plays in this order which it is doing:

1. Do stuff to Webservers

2. Do stuff tot Nodes

3. Do stuff to webservers

Currently when I run this playbook there is  a complete outage on all hosts as plays are executed.

I want to be able to run my playbook so that there is only a partial outage i.e. first running the entire play against Webserver1(host1) /node1(host3) before repeating the same steps against webserver2(host2)/node2(host4).

I have read about the use of serial but I think this would only help for orchestrating the order of execution within a play as opposed to whole playbook? 

Any help much appreciated. 

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