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#!/bin/bash

# »ñÈ¡Ä¿½ñϵͳµÄ¸ºÔØÇéÐÎ
loadavg=$(cat /proc/loadavg | awk '{print $1}')

# ÉèÖÃϵͳ¸ºÔصÄãÐÖµ
load_threshold=1.5

# ÈôÊÇÄ¿½ñϵͳ¸ºÔØÁè¼ÝãÐÖµ£¬Ôò½«ÈÝÆ÷ǨáãÖÁÆäËûÖ÷»ú
if [[ $(echo "$loadavg > $load_threshold" | bc -l) -eq 1 ]]; then
    # ǨáãÈÝÆ÷µÄÂß¼­
    echo "The system load is too high. Migrating containers..."
    # ...
else
    echo "The system load is normal. No need to migrate containers."
fi

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ÉÏÊöʾÀý´úÂëʹÓÃÁË/proc/loadavgÎļþ»ñÈ¡Ä¿½ñϵͳµÄ¸ºÔØÇéÐΣ¬²¢Í¨¹ý½ÏÁ¿¸ºÔغÍãÐÖµÀ´ÅжÏÊÇ·ñÐèҪǨáãÈÝÆ÷¡£

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from flask import Flask
from flask import request
from flask import redirect
from random import choice

app = Flask(__name__)

# ½ç˵ÈÝÆ÷³Ø
container_pool = ['http://container1', 'http://container2', 'http://container3']

@app.route('/')
def load_balancer():
    # Ëæ»úÑ¡ÔñÒ»¸öÈÝÆ÷ʵÀý
    container = choice(container_pool)
    # Öض¨ÏòÇëÇóµ½ÈÝÆ÷ʵÀý
    return redirect(container, code=302)

if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0', port=80)

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https://docs.docker.com/

https://linuxcontainers.org/

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