Setting a field of `node_metadata` in `oci_containerengine_node_pool` from a non-empty string to an empty string is ignored

[alfredkrohmer]

Setting a field of node_metadata in oci_containerengine_node_pool to an empty string shows after it was set to a non-empty string before is ignored. Terraform doesn't even display this in the plan; it probably thinks that we don't care about the field if we set it to an empty string but we actually want to set the field explicitly to an empty string.

In our case kubelet-extra-args was having a value of --register-with-taints= (with an empty value), which doesn't work anymore with cluster-autoscaler >= 1.31, so we need to set kubelet-extra-args to an empty string to remove the flag, which Terraform ignores.

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Terraform Version and Provider Version

Affected Resource(s)

Terraform Configuration Files

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Debug Output

Panic Output

Expected Behavior

Actual Behavior

Steps to Reproduce

1. terraform apply

Important Factoids

References