Chapter 6. Minimizing Downtime with Rolling Deployments
Application deployments and upgrades can be approached in a variety of different strategies. The best approach depends on the application itself, the capabilities of the infrastructure the application runs on, and any promised service-level agreements with the users of the application. Whatever strategy you use, Ansible is well suited to facilitate the deployment. In this chapter, we'll walk through a couple of common deployment strategies and showcase the Ansible features that will be useful within those strategies. We'll also discuss a couple of other deployment considerations that are common across both deployment strategies which are:
- In-place upgrades
- Expanding and contracting
- Failing fast
- Minimizing disruptive actions
- Serializing single tasks
