Pimin Konstantin Kefaloukos skipperkongen

Get the public IP addresses of nodes in a Kubernetes cluster:

kubectl get nodes -o wide

Get the public IP address, in an unnecessarily round-about way, of the node that a particular service is running on:

# Create an nginx deployment and service

Kubernetes Cheat Sheet

Example: nginx

Run nginx:

# kubectl run web --image=nginx
kubectl create deployment web --image=nginx

Let's assume you have a running docker container with a webserver that serves requests. You want to see the requests and responses it receives. You can use the --net container:<id> of the docker run command.

First, you have to discover the ID of the container that you want to monitor. Use docker ps to get it.

# On host
docker ps

	import requests
	import pandas as pd
	from bs4 import BeautifulSoup

	# Fetching S&P 500 tickers and company names from Wikipedia
	url = 'https://en.wikipedia.org/wiki/List_of_S%26P_500_companies'
	response = requests.get(url)
	soup = BeautifulSoup(response.text, 'html.parser')
	table = soup.find('table', {'class': 'wikitable sortable'})

	import matplotlib.pyplot as plt
	import numpy as np

	# https://jakevdp.github.io/PythonDataScienceHandbook/04.12-three-dimensional-plotting.html
	def f(x, y):
	return np.sin(np.sqrt(x 2 + y 2))

	x = np.linspace(-6, 6, 30)
	y = np.linspace(-6, 6, 30)

	import pandas as pd
	import pulp as P

	# Define Constraints, Solve, Print Status, Variables, Objective
	model = P.LpProblem("Maximize Bakery Profits", P.LpMaximize)
	R = P.LpVariable('Regular_production', lowBound=0, cat='Continuous')
	J = P.LpVariable('Jumbo_production', lowBound=0, cat='Continuous')
	model += 5 * R + 10 * J, "Profit"

	# Adjust the constraint

	import cvxpy as cp
	import numpy as np

	# Problem data
	m = 30
	n = 20
	np.random.seed(1)
	A = np.random.randn(m, n)
	b = np.random.randn(m)

	FROM nginx:latest

	COPY src /usr/share/nginx/html

	# docker build -t try-docker-nginx-statichtml .
	# docker run -p 8080:80 try-docker-nginx-statichtml
	# open localhost:8080 in browser

	<!doctype html>
	<html>

	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	</head>

	<body>

	import simpy
	import random
	import statistics

	env = simpy.Environment()

	charger = simpy.Resource(env, 5)


	class Lazer(object):