No matter how you like to participate in developer communities, Pulumi wants to meet you there. If you want to meet other Pulumi users to share use-cases and best practices, contribute code or documentation, see us at an event, or just tell a story about something cool you did with Pulumi, you are part of our community.

Pulumi Community

```export const vpc = new awsx.ec2.Vpc("test-pulumi-vpc-2", {
    numberOfAvailabilityZones: 2,
    cidrBlock: "10.0.0.0/16",
    tags: {
        Name: "tf-test",
    },
});

const selectedVpc = pulumi.output(aws.ec2.getVpc({
    tags: {
        Name: vpc.id,
    },
}, { async: true }));
const selectedSubnetIds = selectedVpc.apply(selectedVpc =&gt; aws.ec2.getSubnetIds({
    tags: {
        Tier: "private",
    },
    vpcId: selectedVpc.id!,
}, { async: true }));

// const subnetGroup = selectedSubnetIds.apply(ids =&gt; {
//     return new aws.elasticache.SubnetGroup("subnetGroup", {
//         subnetIds: [ids], // how to use?
//     });
// })

// const subnetGroup = new aws.elasticache.SubnetGroup("subnetGroup", {
//     subnetIds: [selectedSubnetIds.apply], // how to use?
// });```

The vpc should have a func to get the Private subnets - does it not?

<@UHTP242EB> `Type 'Promise&lt;Output&lt;string&gt;[]&gt;' is not assignable to type 'Input&lt;string&gt;'.`

```const subnetGroup = new aws.elasticache.SubnetGroup("subnetGroup", {
    subnetIds: [vpc.privateSubnetIds],
});```
when I do this

can you wrap vpc.privateSubnetIds in pulumi.output() to get the correct type here? (please note, I've not tried this specific example)

Seems like it's the wrong way:
`Type 'Output&lt;UnwrappedArray&lt;Output&lt;string&gt;&gt;&gt;' is not assignable to type 'Input&lt;string&gt;'.`

this may give you thoughts on how to achieve this

<https://www.pulumi.com/docs/get-started/install/migrating-2.0/#remove-synchronous-invokes>

<@UHTP242EB> thanks, but I don't really understand how to resolve it :thinking_face:

```import * as aws from "@pulumi/aws";
import * as awsx from "@pulumi/awsx";

export const vpc = new awsx.ec2.Vpc("test-pulumi-vpc-2", {
    numberOfAvailabilityZones: 2,
    cidrBlock: "10.0.0.0/16",
    tags: {
        Name: "tf-test",
    },
});

const subnetGroup = new aws.elasticache.SubnetGroup("subnetGroup", {
    subnetIds: vpc.privateSubnetIds.then(),
}, {
    dependsOn: [vpc]
});```

notice the use of `then()` as that resolves the promise

try it out and let me know if there are any issues :slightly_smiling_face:

Didn't realise I could use then() inline like that, cool!

Thanks! Now I have redis up and running :sunglasses:

But it seems there's no way to get "Primary EndpointPrimary endpoint of the cluster" from the redis object I've created

I think you may need to use cacheNodes and then grab what's in there?