Simulate packing to size an container cluster

packing.py

#!/usr/bin/env python3

containers = [
    3172,  # UI Gateway
    5196,  # UI tomcat
    1224,  # Transit UI
    1224,  # Controller
    1224,  # ScribeUI
    1224,  # Applicant API
    1224,  # Composer
    1224,  # API Services
]

containers = containers * 12  # There will be 12 instances of DW hosted in this cluster.

instance_size = 32768  # t2/t3.2xlarge
instances = []


def place(n):
    if n > instance_size:
        raise ValueError("n greater than instances size")
    for i in range(len(instances)):
        if instances[i] >= n:
            instances[i] = instances[i] - n
            return
    instances.append(instance_size - n)


for c in containers:
    place(c)
    print(instances)

print("instance count:", len(instances))