SSM global-infrastructure missing local-zone usw2-sea1-az1

Question

I need to display a list of available local-zones to my users. The list needs to show a meaningful local-zone location (Phoenix, Seattle, Los Angeles...). The only AWS API that I know of that can access this information is an SSM get-parameters-by-path request for /aws/service/global-infrastructure/local-zones.

When I run this query, the results are missing at least one local-zone entry 'usw2-sea1-az1' (Seattle).

If this is an AWS data error, is there a timeline on when this might get fixed/updated? Are there better methods for retrieving a local-zone's human-readable location?

Answer

You can also use `describe-availability-zones` of EC2 API to list local zones.

* https://docs.aws.amazon.com/local-zones/latest/ug/available-local-zones.html
* https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/describe-availability-zones.html

```
% aws  ec2 describe-availability-zones --region=us-west-2 --filters Name=zone-type,Values=local-zone  --all-availability-zones --query 'AvailabilityZones[].[State, OptInStatus, ZoneName]' --output text
available       not-opted-in    us-west-2-den-1a
available       not-opted-in    us-west-2-las-1a
available       not-opted-in    us-west-2-lax-1a
available       not-opted-in    us-west-2-lax-1b
available       not-opted-in    us-west-2-pdx-1a
available       not-opted-in    us-west-2-phx-2a
available       not-opted-in    us-west-2-sea-1a
```

You should also remember to opt-in for local zone but I don't think that has anything to do with Seattle local zone missing from SSM parameters as I can see many other zones that I haven't opt-in.

* https://docs.aws.amazon.com/local-zones/latest/ug/getting-started.html#getting-started-find-local-zone

SSM global-infrastructure missing local-zone usw2-sea1-az1

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