Terraform Unsupported block error for selector in kubernetes_service resource

Question

Terraform configuration for heapster to deploy on kubernetes cluster is failing with error:

Blocks of type "selector" are not expected here. Did you mean to define
argument "selector"? If so, use the equals sign to assign it a value.

Resource configuration is:

resource "kubernetes_service" "service"{
    metadata {
        name="monitoring-influxdb"
        namespace="kube-system"
    }

    spec {
        selector {
            k8s-app="influxdb"
        }

        port{
            port=8086
            target_port=8086
        }
    }
}

@Mithilesh_Kunal - Are you also using same versions. I tried same config on a new VM again, but it's failing with same error: `Error: Unsupported block type on main.tf line 24, in resource "kubernetes_service" "example": 24: selector { Blocks of type "selector" are not expected here. Did you mean to define argument "selector"? If so, use the equals sign to assign it a value.` — Santosh Kumar, Jun 21 '19 at 06:17
It worked on terraform v0.11. I updated the terraform version to v0.12 and it failed with the same error as yours. There is an error with this version. Please downgrade to v0.11 or raise an issue with terraform github. — Mithilesh_Kunal, Jun 21 '19 at 06:42
@Mithilesh_Kunal You should provide that as an answer, especially because intuition would probably lead people to think the provider is at fault here. — Matthew Schuchard, Jun 21 '19 at 14:22

score 3 · Answer 1 · answered Jul 16 '19 at 21:54

3

Had this same issue. Note the = and the error message If so, use the equals sign to assign it a value..

Simple fix:

selector = {
    k8s-app="influxdb"
}

answered Jul 16 '19 at 21:54

Mike Bauer

31
1

score 2 · Answer 2 · answered Jun 24 '19 at 17:18

2

Your configuration file worked well with Terraform v0.11. Upon updating Terraform version and retrying it with version 0.12, it returned in the above error.

So this is a bug in Terraform v0.12

answered Jun 24 '19 at 17:18

Mithilesh_Kunal

873
7
12

This is not a bug, it's just stricter syntax checking in 0.12, see Mike Bauer's answer. "selector" is a map so now needs the "=" before the block. – Nick Wilson Jan 02 '20 at 12:19

Terraform Unsupported block error for selector in kubernetes_service resource

2 Answers2