Notes

# Python version of the script
import os
import subprocess
import time

# Output file
gke_output_file = "gkeout.txt"

# Start time
start_time = time.time()
start_time_readable = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(start_time))

with open(gke_output_file, "w") as file:
file.write(f"Script started at: {start_time_readable}n")
file.write("GCP Project ID | Cluster Name | Kubernetes Version | Cluster IP Addressn")
file.write("-------------------------------------------------------------n")

# Get a list of all GCP projects
projects = subprocess.check_output("gcloud projects list --format="value(projectId)"", shell=True).decode().splitlines()

if not projects:
with open(gke_output_file, "a") as file:
file.write("No GCP projects found. Exiting.n")
exit()

project_count = 0

# Traverse through each project
for project_id in projects:
project_count += 1
print(f"Inspecting project {project_count}: {project_id}")

# Set the project in gcloud
result = subprocess.run(f"gcloud config set project {project_id}", shell=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
if result.returncode != 0:
with open(gke_output_file, "a") as file:
file.write(f"{project_count} | {project_id} | Failed to set project. Skipping.n")
continue

# Get the list of GKE clusters and their details
clusters = subprocess.check_output(
"gcloud container clusters list --format="value(name,currentMasterVersion,endpoint)"",
shell=True
).decode().splitlines()

if not clusters:
with open(gke_output_file, "a") as file:
file.write(f"{project_count} | {project_id} | No GKE clusters found. Skipping.n")
continue

# Append cluster details to the output file
with open(gke_output_file, "a") as file:
for cluster in clusters:
parts = cluster.split()
cluster_name = parts[0]
cluster_version = parts[1]
cluster_ip = parts[2]
file.write(f"{project_count} | {project_id} | {cluster_name} | {cluster_version} | {cluster_ip}n")

# End time
end_time = time.time()
end_time_readable = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(end_time))
time_taken_minutes = int((end_time - start_time) / 60)

# Analyze and summarize
version_summary = {}
region_summary = {}
total_clusters = 0

with open(gke_output_file, "r") as file:
lines = file.readlines()[3:]
for line in lines:
parts = line.split('|')
if len(parts) < 4:
continue

cluster_version = parts[3].strip()
cluster_name = parts[2].strip()

if cluster_version:
version_summary[cluster_version] = version_summary.get(cluster_version, 0) + 1
total_clusters += 1

region = "us-" in cluster_name
if region:
region_summary[region] = region_summary.get(region, 0) + 1

# Write summary to output file
with open(gke_output_file, "a") as file:
file.write(f"nClusters by Kubernetes Version:n")
for version, count in version_summary.items():
file.write(f"{count} clusters running Kubernetes version {version}n")

file.write(f"nClusters by Region:n")
for region, count in region_summary.items():
file.write(f"{count} clusters in region {region}n")

file.write(f"nSummary:n")
file.write(f"Total projects inspected: {project_count}n")
file.write(f"Total clusters found: {total_clusters}n")
file.write(f"Script runtime: {time_taken_minutes} minutesn")

print(f"Script finished. Output saved to {gke_output_file}")