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aws_load_balanced_web_farm.py
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aws_load_balanced_web_farm.py
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#!/usr/bin/env python3
# coding=utf-8
# vim:ts=4:sts=4:sw=4:et
# pylint: disable=W0106
#
# Author: Hari Sekhon
# Date: 2023-04-14 13:54:52 +0100 (Fri, 14 Apr 2023)
#
# https://github.com/HariSekhon/Diagrams-as-Code
#
# License: see accompanying Hari Sekhon LICENSE file
#
# If you're using my code you're welcome to connect with me on LinkedIn
# and optionally send me feedback to help steer this or other code I publish
#
# https://www.linkedin.com/in/HariSekhon
#
"""
AWS Load Balanced Web Farm
"""
# based on https://diagrams.mingrammer.com/docs/getting-started/examples
__author__ = 'Hari Sekhon'
__version__ = '0.3'
import os
from diagrams import Diagram
# ============================================================================ #
# AWS resources:
#
# https://diagrams.mingrammer.com/docs/nodes/aws
#
from diagrams.aws.compute import EC2
from diagrams.aws.database import RDS
from diagrams.aws.network import ELB
from diagrams.onprem.client import Users
graph_attr = {
"splines": "spline",
}
with Diagram("AWS Load Balanced Web Farm",
show=not bool(os.environ.get('CI', 0)),
direction="TB",
filename='images/aws_load_balanced_web_farm',
graph_attr=graph_attr,
):
# can use variables to connect nodes to the same items
# lb = ELB("lb")
# db = RDS("events")
# lb >> EC2("worker1") >> db
# lb >> EC2("worker2") >> db
# lb >> EC2("worker3") >> db
# lb >> EC2("worker4") >> db
# lb >> EC2("worker5") >> db
elb = ELB("ELB\nElastic Load Balancer")
Users('Users') >> elb
# but less redundant code than the above can be achieved by grouping the workers into a list[]
elb >> [EC2("Web Server 1"),
EC2("Web Server 2"),
EC2("Web Server 3"),
EC2("Web Server 4"),
EC2("Web Server 5")] >> RDS("RDS Database")