Salt versus Ansible versus Puppet versus PalletOps execution models
While the configuration systems we explore in this chapter share a fair number of similarities, they differ a lot in the way code is executed on the client nodes:
- With Puppet, a Puppet agent registers with the Puppet master and opens a communication channel to retrieve commands. This process is repeated periodically, normally every thirty minutes.
Note
Thirty minutes isn't fast. You can, of course, configure a lower value for the time interval required for the next run. At any rate, Puppet essentially uses a pull model. Clients must check in to know whether changes are available.
- Ansible pushes changes over SSH when desired. This is a push model.
- Salt uses a push model, but with a ...
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