Terraform Provider: probe_version field produces inconsistent result after apply #158

New Issue

MrUnknownDE · 2026-04-05T16:18:58+02:00

MrUnknownDE commented

2026-04-05 16:18:58 +02:00

Originally created by @listellm on 1/16/2026

Bug Report

Component

Terraform Provider (terraform-provider-oneuptime)

Description

The OneUptime Terraform provider produces an inconsistent result after applying changes to oneuptime_probe resources. The probe_version field changes from a string value to a JSON object representation between plan and apply operations, causing Terraform to report a provider bug.

Expected Behaviour

The probe_version field should remain as the string value provided in the configuration (e.g., "9.3.19") throughout the resource lifecycle.

Actual Behaviour

After terraform apply, the provider returns probe_version as a JSON object {"_type":"Version","value":"9.3.19"} instead of the string "9.3.19" that was provided, causing Terraform to report an inconsistent state.

Steps to Reproduce

Create a oneuptime_probe resource with probe_version = "9.3.19"
Run terraform apply
Run terraform apply again
Observe the error about inconsistent provider result

Error Message

Error: Provider produced inconsistent result after apply

When applying changes to module.probe["example"].oneuptime_probe.this, provider
"provider["registry.terraform.io/oneuptime/oneuptime"]" produced an
unexpected new value: .probe_version: was cty.StringVal("9.3.19"), but now
cty.StringVal("{\"_type\":\"Version\",\"value\":\"9.3.19\"}").

This is a bug in the provider, which should be reported in the provider's
own issue tracker.

Terraform Configuration

resource "oneuptime_probe" "this" {
  project_id    = "zzzzz"
  name          = "probe name"
  key           = random_uuid.this.result
  description   = "Probe for aws "
  probe_version = "9.3.19"
  should_auto_enable_probe_on_new_monitors = false
  labels        = [...]
}

Environment

OneUptime Provider Version: 9.3.19
Terraform Version: 1.12.0
Platform: Linux 6.14.0-37-generic

Current Workaround

Using a lifecycle rule to ignore changes to the probe_version field:

resource "oneuptime_probe" "this" {
  # ... configuration ...
  
  lifecycle {
    ignore_changes = [probe_version]
  }
}

Impact

Prevents proper state management for probe resources
Requires lifecycle workarounds that hide legitimate version changes
Causes Terraform to report provider bugs on every subsequent apply
Makes it difficult to manage probe version upgrades through Terraform

Root Cause

The provider appears to be returning the probe_version field as a JSON object with _type and value properties from the API, rather than normalising it to a string value as defined in the schema.

Suggested Fix

The provider should normalise the probe_version field to return only the string value, stripping the JSON object wrapper before returning it to Terraform.

*Originally created by @listellm on 1/16/2026* ## Bug Report ### Component Terraform Provider (`terraform-provider-oneuptime`) ### Description The OneUptime Terraform provider produces an inconsistent result after applying changes to `oneuptime_probe` resources. The `probe_version` field changes from a string value to a JSON object representation between plan and apply operations, causing Terraform to report a provider bug. ### Expected Behaviour The `probe_version` field should remain as the string value provided in the configuration (e.g., `"9.3.19"`) throughout the resource lifecycle. ### Actual Behaviour After `terraform apply`, the provider returns `probe_version` as a JSON object `{"_type":"Version","value":"9.3.19"}` instead of the string `"9.3.19"` that was provided, causing Terraform to report an inconsistent state. ### Steps to Reproduce 1. Create a `oneuptime_probe` resource with `probe_version = "9.3.19"` 2. Run `terraform apply` 3. Run `terraform apply` again 4. Observe the error about inconsistent provider result ### Error Message ``` Error: Provider produced inconsistent result after apply When applying changes to module.probe["example"].oneuptime_probe.this, provider "provider["registry.terraform.io/oneuptime/oneuptime"]" produced an unexpected new value: .probe_version: was cty.StringVal("9.3.19"), but now cty.StringVal("{\"_type\":\"Version\",\"value\":\"9.3.19\"}"). This is a bug in the provider, which should be reported in the provider's own issue tracker. ``` ### Terraform Configuration ```hcl resource "oneuptime_probe" "this" { project_id = "zzzzz" name = "probe name" key = random_uuid.this.result description = "Probe for aws " probe_version = "9.3.19" should_auto_enable_probe_on_new_monitors = false labels = [...] } ``` ### Environment - **OneUptime Provider Version**: `9.3.19` - **Terraform Version**: `1.12.0` - **Platform**: Linux 6.14.0-37-generic ### Current Workaround Using a lifecycle rule to ignore changes to the `probe_version` field: ```hcl resource "oneuptime_probe" "this" { # ... configuration ... lifecycle { ignore_changes = [probe_version] } } ``` ### Impact - Prevents proper state management for probe resources - Requires lifecycle workarounds that hide legitimate version changes - Causes Terraform to report provider bugs on every subsequent apply - Makes it difficult to manage probe version upgrades through Terraform ### Root Cause The provider appears to be returning the `probe_version` field as a JSON object with `_type` and `value` properties from the API, rather than normalising it to a string value as defined in the schema. ### Suggested Fix The provider should normalise the `probe_version` field to return only the string value, stripping the JSON object wrapper before returning it to Terraform.

MrUnknownDE closed this issue

2026-04-05 16:18:58 +02:00

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Reference: github/oneuptime#158