How get submodul data, example: nodepools instance private ips?

[nyirimark]

I am new with terraform, so maybe it is a easy question.

Using oke module create cluster. After i need to create a public lb or apigw but i need to know worker ip, etc.
I only got data from module.oke but no outputs with these data.
In tfstate contains requred data in 'module.oke.module.oke.oci_containerengine_node_pool.nodepools["np01"], how can i access this?

If i do not want to change the module code, how can i access the private ips from code at runtime.