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@darmach darmach commented Jan 7, 2026

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@darmach darmach requested a review from a team as a code owner January 7, 2026 14:19
@darmach darmach marked this pull request as draft January 7, 2026 14:19
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Summary of Changes

Hello @darmach, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly extends the OpenStack network automation capabilities within the 'os_networks' Ansible role. It introduces new functionalities for provisioning and managing OpenStack address scopes and subnet pools, which are fundamental for advanced IP address management. Furthermore, it enhances subnet creation by allowing the specification of 'prefix_length' and provides explicit control over Source Network Address Translation (SNAT) for OpenStack routers. A minor correction to a parameter name in the subnet module ensures better alignment with OpenStack's API. While the PR title "Jd bgp works" suggests a broader goal, these changes specifically focus on robust OpenStack network resource orchestration.

Highlights

  • New OpenStack Resource Management: Introduced Ansible tasks to manage OpenStack address scopes and subnet pools, expanding the automation capabilities for network infrastructure.
  • Enhanced Subnet Configuration: Added support for specifying 'prefix_length' when creating subnets, offering more precise control over IP allocation.
  • Router SNAT Control: Enabled explicit configuration of Source Network Address Translation (SNAT) for OpenStack routers, allowing for flexible network egress policies.
  • Parameter Name Correction: Updated the 'subnetpool' parameter to 'subnet_pool' in the subnet creation task for consistency with OpenStack module conventions.

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Code Review

This pull request adds support for OpenStack address scopes, subnet pools, and other networking features, likely for BGP support. The changes are functionally useful, but there are several areas for improvement. The new variables os_address_scopes and os_subnet_pools lack default values, which will cause playbook failures if they are not defined; I've added comments with fixes. Additionally, the new features are not documented in README.md or defaults/main.yml, and a bug fix introduces a breaking change (subnetpool -> subnet_pool) that should be communicated. For future maintainability, consider using module_defaults to reduce the duplication of authentication parameters across tasks.

name: "{{ item.name }}"
shared: "{{ item.shared | default(omit) }}"
ip_version: "{{ item.ip_version | default(omit) }}"
with_items: "{{ os_address_scopes }}"

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high

The variable os_address_scopes is not defined in the role's defaults. If it's not provided by the user, this task will fail. To make it optional and prevent errors, please provide a default value. This will make the role more robust by simply skipping the loop if the variable is not defined.

  with_items: "{{ os_address_scopes | default([]) }}"

shared: "{{ item.shared | default(omit) }}"
prefixes: "{{ item.prefixes }}"
address_scope: "{{ item.address_scope }}"
with_items: "{{ os_subnet_pools }}"

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high

Similar to os_address_scopes, the variable os_subnet_pools is not defined in the role's defaults. This will cause the task to fail if the variable is not set. Please provide a default value to make it optional and avoid potential playbook failures.

  with_items: "{{ os_subnet_pools | default([]) }}"

name: "{{ item.name }}"
shared: "{{ item.shared | default(omit) }}"
ip_version: "{{ item.ip_version | default(omit) }}"
with_items: "{{ os_address_scopes }}"
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loop: instead of with_items:

shared: "{{ item.shared | default(omit) }}"
prefixes: "{{ item.prefixes }}"
address_scope: "{{ item.address_scope }}"
with_items: "{{ os_subnet_pools }}"
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ditto

ipv6_address_mode: "{{ item.1.ipv6_address_mode | default(omit) }}"
ipv6_ra_mode: "{{ item.1.ipv6_ra_mode | default(omit) }}"
use_default_subnetpool: "{{ item.1.use_default_subnetpool | default(omit) }}"
subnetpool: "{{ item.1.subnetpool | default(omit) }}"
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Where does this come from?

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Looks incompatible backwards

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3 participants