Serverless-framework postgresql版本升级问题

Question

We use serverless-framework and Postgresql.

Type: AWS::RDS::DBInstance
Properties:
  EngineVersion: 11.8

It was 11.8 before, we successfully upgraded it from 11.8 to 11.9 by changing the version in serverless.yml in EngineVersion . But now we need to upgrade it to 11.10 and we have the following issue:

The error message:

Cannot upgrade postgres from 11.9 to 11.1 (Service: AmazonRDS; Status Code: 400; Error Code: InvalidParameterCombination; Request ID: e0d1923a-cf98-44ea-a9e4-bc3871e33bf6; Proxy: null).

So it looks like it tries to upgrade to 11.1 rather than 11.10.

Answer 1

It seems like Serverless ignores '0' in Engine Version that you are trying to set up. Could you try to escape version with quotes?

It will look like this:

Type: AWS::RDS::DBInstance
Properties:
  EngineVersion: '11.10'

It should help to solve the problem and upgrade version successfully

Answer 2

The 11.10 value you're specifying for the EngineVersion property is processed as a number by the YAML engine since you're not using quotes, so the trailing zeros are removed and the resulting value is 11.1 . You need to specify the value in quotes, like this: "11.10"