Description

This script verifies in all Google Cloud Projects the already configured subnets in vpc networks, it tries to help you to avoid overlapping when you require to peering the VPCs.

Also, the script list all the existing subnets. (Check outputs).

Requirements

• Bash >= 3.2
• Google Cloud Console - Organization Compute Admin|Editor|Viewer

Usage

./gpc-check-subnets.sh <range> <first|all> [filter]

Example

• Find first result in projects that contains "xyz" in projectId or project name:

./gpc-check-subnets.sh 192.168.0.1/24 first xyz

• Find all results in projects that contains "xyz" in projectId or project name:

./gpc-check-subnets.sh 192.168.0.1/24 all xyz

• Find first result in all projects:

./gpc-check-subnets.sh 192.168.0.1/24 first

• Find results in all projects:

./gpc-check-subnets.sh 192.168.0.1/24 all

Result

The script returns information about the projects where the searched subnet exists.

Match:

######################################
Subnet xxx.xxx.xxx.xxx/xx does exist!
######################################
Project ID:  xxx-xxx-xxx
Range: xxx.xxx.xxx.xxx/xx
######################################

Unmatched:

######################################
Subnet xxx.xxx.xxx.xxx/xx does NOT exist!
######################################

Output

The script creates 3 files in the execution path:

• result.log (contain the projects where the searched subnet exists)
• ranges.log (contain all the ranges/subnets evaluated)
• projects.log (contain all the projects where the subnet was serched)