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h

high-morning-18773

11/14/2019, 6:22 PM
the parameter group was created when pulumi
w

white-balloon-205

11/14/2019, 6:22 PM
Did you change the logical name of the resource in your Pulumi code? This would cause Pulumi to think it needs to create a new one and delete the old one. (the logical name is how Pulumi tracks identity across deployments)
That is 
aws.rds.ParameterGroup(logicalName, { name: physicalName })
.
h

high-morning-18773

11/14/2019, 6:23 PM
hmm i have code in python module and did not change resource name
i do self.name + “paramater group”
let me look at details
w

white-balloon-205

11/14/2019, 6:24 PM
What does your preview show?
h

high-morning-18773

11/14/2019, 6:24 PM
looking
pulumi:pulumi:Stack: (same)
    [urn=urn:pulumi:test::test::pulumi:pulumi:Stack::test-test]
        + aws:rds/parameterGroup:ParameterGroup: (create)
            [urn=urn:pulumi:test::test::mahana-python:snorkelfargateapp:MahanaFargateApp$aws:rds/parameterGroup:ParameterGroup::testdevapptest]
            [provider=urn:pulumi:test::test::pulumi:providers:aws::default_1_7_0::4910d117-d2d7-4356-83a3-4e4c7694b51a]
            description: "Managed by Pulumi"
            family     : "postgres9.6"
            name       : "testdevapprdsparameters"
            parameters : [
                [0]: {
                    applyMethod: "pending-reboot"
                    name       : "rds.force_ssl"
                    value      : "0"
                }
            ]
- aws:rds/parameterGroup:ParameterGroup: (delete)
        [id=testrdsparameters]
        [urn=urn:pulumi:test::test::aws:rds/parameterGroup:ParameterGroup::test]
        [provider=urn:pulumi:test::test::pulumi:providers:aws::default_1_8_0::de9a190f-2958-4411-a5e8-fd8a3a52bfc0]
        --aws:ecs/taskDefinition:TaskDefinition: (delete-replaced)
            [id=testdevappfargate-task]
            [urn=urn:pulumi:test::test::mahana-python:snorkelfargateapp:MahanaFargateApp$aws:ecs/taskDefinition:TaskDefinition::testdevappapp-task]
            [provider=urn:pulumi:test::test::pulumi:providers:aws::default_1_8_0::de9a190f-2958-4411-a5e8-fd8a3a52bfc0]
    - aws:rds/parameterGroup:ParameterGroup: (delete)
        [id=testdevapprdsparameters]
        [urn=urn:pulumi:test::test::aws:rds/parameterGroup:ParameterGroup::testdevapptest]
        [provider=urn:pulumi:test::test::pulumi:providers:aws::default_1_8_0::de9a190f-2958-4411-a5e8-fd8a3a52bfc0]
let me check the name in the ui
w

white-balloon-205

11/14/2019, 6:27 PM
Yeah - it looks like you are changing the URN from: • 
urn:pulumi:test::test::aws:rds/parameterGroup:ParameterGroup::test
• 
urn:pulumi:test::test::mahana-python:snorkelfargateapp:MahanaFargateApp$aws:rds/parameterGroup:ParameterGroup::testdevapptest
Are you moving it inside a component?
Pulumi thinks these are two unrelated resources since their URNs are different - so creates the latter and deletes the former. You can use 
aliases
to tell Pulumi these are two different names for the same thing. https://www.pulumi.com/docs/intro/concepts/programming-model/#aliases
h

high-morning-18773

11/14/2019, 6:29 PM
kk i will take a look
Thank you this helped 
Provides a list of aliases for a resource or component. When making a breaking change to the name or type of a resource or component, you can add the old name to the list of aliases for a resource to ensure that existing resources will be migrated to the new name instead of being deleted and replaced with the new named resource.
This is also probably why new congnito pool was getting created when i was adding new attributes to existing congnito user pool
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