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chore: reduce ignore_changes suggestion scope #17947

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May 20, 2025
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chore: reduce ignore_changes suggestion scope #17947

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chore: reduce ignore_changes suggestion scope
dannykopping May 20, 2025
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Update docs/admin/templates/extending-templates/prebuilt-workspaces.md
dannykopping May 20, 2025
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17 changes: 3 additions & 14 deletions docs/admin/templates/extending-templates/prebuilt-workspaces.md
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Original file line number Diff line number Diff line change
Expand Up @@ -142,7 +142,7 @@ To prevent this, add a `lifecycle` block with `ignore_changes`:
```hcl
resource "docker_container" "workspace" {
lifecycle {
ignore_changes = all
ignore_changes = [env, image] # include all fields which caused drift
}

count = data.coder_workspace.me.start_count
Expand All @@ -151,19 +151,8 @@ resource "docker_container" "workspace" {
}
```

For more targeted control, specify which attributes to ignore:

```hcl
resource "docker_container" "workspace" {
lifecycle {
ignore_changes = [name]
}

count = data.coder_workspace.me.start_count
name = "coder-${data.coder_workspace_owner.me.name}-${lower(data.coder_workspace.me.name)}"
...
}
```
Limit the scope of `ignore_changes` to include only the fields specified in the notification.
If you include too many fields, Terraform might ignore changes that wouldn't otherwise cause drift.

Learn more about `ignore_changes` in the [Terraform documentation](https://developer.hashicorp.com/terraform/language/meta-arguments/lifecycle#ignore_changes).

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