34 lines
2.2 KiB
Markdown
34 lines
2.2 KiB
Markdown
# Decentralized firewall management
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This sample shows how a decentralized firewall management can be organized using the [firewall-yaml](../../modules/net-vpc-firewall-yaml) module.
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This approach is a good fit when Shared VPCs are used across multiple application/infrastructure teams. A central repository keeps environment/team specific folders with firewall definitions in `yaml` format.
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In the current example multiple teams can define their [VPC Firewall Rules](https://cloud.google.com/vpc/docs/firewalls) for [dev](./firewall/dev) and [prod](./firewall/prod) environments using team specific subfolders. Rules defined in the [common](./firewall/common) folder are applied to both dev and prod environments.
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> **_NOTE:_** Common rules are meant to be used for situations where [hierarchical rules](https://cloud.google.com/vpc/docs/firewall-policies) do not map precisely to requirements (e.g. SA, etc.)
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This is the high level diagram:
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![High-level diagram](diagram.png "High-level diagram")
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<!-- BEGIN TFDOC -->
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## Variables
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| name | description | type | required | default |
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|---|---|:---: |:---:|:---:|
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| billing_account_id | Billing account id used as default for new projects. | <code title="">string</code> | ✓ | |
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| prefix | Prefix used for resources that need unique names. | <code title="">string</code> | ✓ | |
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| root_node | Hierarchy node where projects will be created, 'organizations/org_id' or 'folders/folder_id'. | <code title="">string</code> | ✓ | |
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| *ip_ranges* | Subnet IP CIDR ranges. | <code title="map(string)">map(string)</code> | | <code title="{ prod = "10.0.16.0/24" dev = "10.0.32.0/24" }">...</code> |
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| *project_services* | Service APIs enabled by default in new projects. | <code title="list(string)">list(string)</code> | | <code title="[ "container.googleapis.com", "dns.googleapis.com", "stackdriver.googleapis.com", ]">...</code> |
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| *region* | Region used. | <code title="">string</code> | | <code title="">europe-west1</code> |
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## Outputs
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| name | description | sensitive |
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|---|---|:---:|
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| fw_rules | Firewall rules. | |
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| projects | Project ids. | |
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| vpc | Shared VPCs. | |
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<!-- END TFDOC -->
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