Software Update using Ansible with Zero system down time

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1

Hi All,
I am trying to address the use case of Software update(can be downgrade or upgrade) using yum or shell module.
So i have Application server with some application (.ear ) deployed . But when I upate the rpms (which contain .ear ) using Ansible , I need to restart the application server because of that incoming traffic for that application is dropped for some time.
How can I best implement software update procedure with zero system down time using Ansible.

Regards
Rahul

2

Hi

This isn't so much an ansible specific question, but more a generic
strategy on how your wish to deploy things.
Ansible is just the tool to implement such as strategy.

You already have some sort of plan - work that out properly and then
structure the ansible playbook to fit that (provided you will be using
ansible).

Dick