Template error: Cannot use Fn::GetAZs in Conditions

Question

Conditions:
  DBInstanceLaunch:
    IsFirstPrimaryAZ:
      Fn::Equals:
      - !Ref DBAvailabilityZone
      - Fn::Select:
        - 0
        - Fn::GetAZs: ''

When I try to upload this, I get "Template error: Cannot use Fn::GetAZs in Conditions" I checked in the docs, Fn::GetAZs is supported by Conditions. I am trying to do what is mentioned in this answer: RDS with Cloud Formation and AZ issues

user_248823 · Answer

I checked in the docs, Fn::GetAZs is supported by Conditions.

No its not supported. Fn::GetAZs can only be used with Fn::If, which is not the same as Conditions section in CloudFormation.

Template error: Cannot use Fn::GetAZs in Conditions

1 Answers