Back with n00b questions 🙂 • Context: ◦ I'm using the Automation API and Python. ◦ Working with

aws.cloudfront.Distribution

. ◦ Seems the only way to bounce between regions is to set the

aws:region

configuration. ▪︎ Please correct me if I'm wrong about setting that value. • Questions: ◦ Should the

aws:region

config be changed between calls to

aws.cloudfront.Distribution

, can I expect the subsequent distribution to be deployed in the most resent setting? ◦ If using the stack config to exchange parameters between the local program and the Pulumi program, what is the most effective method of getting a

pulumi.automation.Stack

instance in the Pulumi program? ▪︎ I've considered

__file__

,

pulumi.get_stack()

, and

pulumi.automation.select_stack()

but it seems like I'm missing a more obvious method. ▪︎ Edits: • I'm looking to set new values to the stack's config. • Can confirm that the

pulumi.automation.select_stack()

works.

I believe you can set the region on the provider? Than you could just instantiate multiple providers and pass them to your distributions.

Ah, I totally didn't think about doing the provider thing. Sharp eye. I'll try that here in a bit. Stack shenanigans is working like I want it to within the Pulumi program, but you're probably right. Feels like it's the wrong thing to do. Probably should just interface with external storage from the Pulumi program. I'll probably refactor it and do it the right way again tomorrow. At least I'm learning about this slick system. Thanks for the tips!

I would expect that when a deployment starts it grabs the config and doesn't read it again after, so I'm surprised if that worked. But yes I would recommend against automation api inside your program. Good luck!

Yeah, I just instantiated a

pulumi.automation.Stack

instance within the Pulumi program itself. That seems to interact with the stack's YAML file when running

Stack.set_config

and

Stack.get_config

.

import pulumi
from pulumi import automation as auto
from pathlib import Path

# bad ideas
stack = auto.select_stack(
    stack_name=pulumi.get_stack(),
    work_dir=str(Path(__file__).parent.absolute()))

# set a config value
stack.set_config('stuff', auto.ConfigValue('things'))

# log the newly set value
<http://pulumi.info|pulumi.info>(stack.get_config('stuff'))

It's probably working because I'm more-or-less using it as a method of sending output back to the automation program (less the

aws:region

config). Definitely heeding your advice though.

Yea that is just reading and writing straight to the json file. So I guess that working isn't surprising. The real question is if the ongoing deployment actually picks up your change, I would doubt that and be thoroughly surprised if it did

Ah, that makes sense.