Playbook Example: Continuous Delivery and Rolling Upgrades — Ansible Documentation

What is continuous delivery? Continuous delivery (CD) means frequently delivering updates to your software application. The idea is that by updating more often, you do not have to wait for a specific timed period, and your organization gets better at the process of responding to change. Some Ansible users are deploying updates to their end users on an hourly or even more frequent basis – sometime

[oinume]

Rolling upgradeのやり方。pre_tasks とかいうのがあるらしい。