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# generals
sparse-intern-71089
02/01/2023, 3:18 AMThis message was deleted.
l
little-cartoon-10569
02/01/2023, 3:36 AMYes. You need to use the same backend for all projects, so they're all stored in the same location. Then each stack can read all the others.
w
wet-fall-57893
02/01/2023, 3:40 AMAll my current stacks are stored in the same s3 bucket e.g
<s3://david-pulumi-state/>org/projectName/stackNameorgwet-fall-57893
02/01/2023, 4:13 AMI tried with backend in the position of
orgstack names may not contain slashel
little-cartoon-10569
02/01/2023, 4:25 AMThe backemd URL has to be exactly the same. Character-for-character. You can't use the project name or stack name in the backend, if you want stack references to work.
little-cartoon-10569
02/01/2023, 4:25 AMAll the states have to go in the same file.
little-cartoon-10569
02/01/2023, 4:26 AMOrgs don't exist in S3 backends. Project names aren't used. Therefore, the general recommendation is for stack names to include the project name.
w
wet-fall-57893
02/01/2023, 4:27 AMAll the states have to go in the same file.you mean the same place which in my case the same s3 bucket right?
l
little-cartoon-10569
02/01/2023, 4:27 AMSo you'd have Pulumi.myproj_europe.yml for the europe stack in myproj project.
little-cartoon-10569
02/01/2023, 4:27 AMNo, in the same file.
little-cartoon-10569
02/01/2023, 4:27 AMNot just the same backet, the same object in the bucket.
little-cartoon-10569
02/01/2023, 4:28 AMYou can use different objects in the bucket, but then you won't be able to use stack references.
w
wet-fall-57893
02/01/2023, 4:29 AMmy current setup is one object per stack. e.g I would have 2 separate objects for
dave-devdave-stagingdavel
little-cartoon-10569
02/01/2023, 4:30 AMYou will have to merge them.
w
wet-fall-57893
02/01/2023, 4:30 AMbut if I switch to using Pulumi account then i cannot use s3 backend anymore?
l
little-cartoon-10569
02/01/2023, 4:31 AMYou can if you want, but the Pulumi service is better in all ways than a self-managed backend (in my opinion).
little-cartoon-10569
02/01/2023, 4:31 AMI haven't used the S3 backend since it was improved: it now has file locking, which was a big problem for me in the past. But it's quite a way behind app.pulumi.com, in terms of features.
👍 1
little-cartoon-10569
02/01/2023, 4:33 AMOh my mistake, it's not technically a single bucket object that the state is stored in: it's a single bucket path. Pulumi manages the objects underneath. But as I understand it, there is a single state file, shared between all projects and stacks. (Happy to be proven wrong on this though!)
w
wet-fall-57893
02/01/2023, 4:40 AMThe reason I am asking about cross-stack ref is I am trying to split up our monolithic EKS state file and that requires us to reference resources from stacks as their outputs
wet-fall-57893
02/01/2023, 5:31 AMhave verified stacks need to point to the same backend path before they start to work
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wet-fall-57893
02/01/2023, 5:31 AMspecify the referenced stack like this works
Copy code
const stackRef = new pulumi.StackReference('stack-ref-test', {
name: 'stack-ref-child',
});👍 1
o
orange-policeman-59119
02/01/2023, 8:03 AM@little-cartoon-10569 we recently merged support for projects in file backends like S3, which may be in the next release.
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orange-policeman-59119
02/01/2023, 8:04 AM@wet-fall-57893 stack references must use the same backend, that's correct. For projects created using the new CLI, you will be able to use stack references like "projectName/stackName".
orange-policeman-59119
02/01/2023, 8:05 AMOne more nit: there should be a state file per stack, and there are a few other files. If you explore the backend via console, you should find historical state files as well.
w
wet-fall-57893
02/01/2023, 8:20 AM@orange-policeman-59119 thanks for confirmation
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