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''' | |
@author Bommarito Consulting, LLC; http://bommaritollc.com/ | |
@date 20131029 | |
This script monitors and logs to CSV the status of all tunnels for all VPNs for a single EC2 region. | |
''' | |
# Imports | |
import boto | |
import boto.ec2 | |
import boto.vpc | |
import csv | |
import datetime | |
import fabric.colors | |
import sys | |
# Set your AWS creds if you aren't using a dotfile or some other boto auth method | |
aws_access_key_id=None | |
aws_secret_access_key=None | |
ec2_region='us-east-1' | |
# CSV output file | |
csv_file_name = "vpn_status.csv" | |
def report_tunnel_down(tunnel): | |
''' | |
Report and possibly take corrective action. | |
''' | |
sys.stderr.write(fabric.colors.red("Tunnel {0} is down since {1}"\ | |
.format(tunnel.outside_ip_address, tunnel.last_status_change))) | |
def test_tunnel_status(tunnel): | |
''' | |
Run a test on tunnel status. | |
For now, this just trusts the AWS API status and does not perform network-level test. | |
''' | |
# Check by status string | |
if tunnel.status == 'DOWN': | |
report_tunnel_down(tunnel) | |
return False | |
else: | |
return True | |
def test_vpc_status(): | |
''' | |
Output VPC tunnel statuses. | |
''' | |
# Create EC2 connection | |
ec2_conn = boto.vpc.connect_to_region(ec2_region, | |
aws_access_key_id= aws_access_key_id, | |
aws_secret_access_key=aws_secret_access_key) | |
# Setup the CSV file writer | |
with open(csv_file_name, 'a') as csv_file: | |
csv_writer = csv.writer(csv_file) | |
# Iterate over all VPC connections | |
for vpn_connection in ec2_conn.get_all_vpn_connections(): | |
# Handle connection and its tunnels | |
for tunnel in vpn_connection.tunnels: | |
# Test the tunnel and output | |
status = test_tunnel_status(tunnel) | |
row = [datetime.datetime.now(), vpn_connection.id, | |
tunnel.outside_ip_address, status, | |
tunnel.status_message, tunnel.last_status_change] | |
csv_writer.writerow(row) | |
if __name__ == "__main__": | |
test_vpc_status() |
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