Srđan (Serge) Đukić srkiNZ84

Living in New Zealand, doing SRE stuff

srkiNZ84 / gke_users.csv

Last active March 16, 2021 01:14

Script to make GCP service accounts and generate kubernetes authentication files for them

	John Wayne	[email protected]	GKE service account for John
	Barbara Streisand	[email protected]	GKE service account for Barbara

srkiNZ84 / bash-child-cgroups.sh

Last active October 7, 2020 22:12

Simple demonstration of using Linux cgroups to set limits on the number of processes

	#!/bin/bash

	# PREREQUISITES: On Ubuntu 18.04 need to make sure that the "libcgroup1" and "cgroup-tools" packages are installed

	MAXNUMPROCS=11
	MAXNUMCHILDPROCS=8
	PARENTGROUP=sandwich

	# Create the parent cgroup
	##OPTIONAL: This part should be already there on more recent Linux distributions

srkiNZ84 / copy-ssm-params.py

Created September 22, 2020 03:12

Copy SSM parameters from one path in SSM to another

	#!/usr/bin/python3

	import boto3

	session = boto3.Session(profile_name='foobar')

	client = session.client('ssm')
	fromPath = "/production/"
	toPath = "/uat/"

srkiNZ84 / update_elb_certificate_letsencrypt_route53.sh

Last active August 17, 2021 15:21

Bash script to automate the renewal of LetsEncrypt certificates using DNS authentication with Route53 and then updating the load balancers

	#!/usr/bin/bash

	# pre-requisites:
	# apt install python3-pip awscli
	# pip3 install certbot certbot-dns-route53 awscli
	# mkdir .certbot/{config,work,logs}
	# IAM policy attached to EC2 instance with:
	# - route53:ListHostedZones
	# - route53:GetChange
	# - route53:ChangeResourceRecordSets

srkiNZ84 / check_acm_cert_duplicates.sh

Last active August 4, 2020 08:54

Bash script to check whether the certificate you've got locally is already in AWS Certificate Manager or not (based on md5sum and tags)

	#!/bin/bash

	CURRENT_CERT_MD5SUM=af375610c480018271caa1b624c838b3

	for acmCertificate in $(aws acm list-certificates \| jq -r .CertificateSummaryList[].CertificateArn)
	do
	echo "Cert ARN is $acmCertificate"
	ACM_CERT_MD5SUM=$(aws acm list-tags-for-certificate --certificate-arn $acmCertificate \| jq -r '.Tags[] \| select(.Key \| contains("Md5SumCert")) \| .Value')
	if [[ "$CURRENT_CERT_MD5SUM" == "$ACM_CERT_MD5SUM" ]]
	then

srkiNZ84 / archive_repos_git.sh

Last active July 28, 2020 02:44

Couple of bash scripts I wrote to archive Cloudforge repos

	#!/bin/bash

	filename="git_repo_list.txt"

	while read repo
	do
	echo "Starting to Archive repository '$repo'"
	echo "Git checking out repository '$repo'"
	git clone $repo
	repoShortName=$(echo $repo \| grep -E -o '([^\/\.]+).git$')

srkiNZ84 / github_commit.py

Created July 1, 2020 05:06

Python code to commit to GitHub

	import base64
	import json
	import time
	import requests
	import os

	def push_to_github(filename, repo, branch, token):
	url="https://api.github.com/repos/" + repo + "/contents/" + filename

	fileContents = """Last timestamp: """

srkiNZ84 / delete_all_deployments_in_namespace_except_tiller.sh

Last active April 16, 2020 10:26

	#!/bin/bash

	KUBECOMMAND="kubectl --kubeconfig ~/.kube/mycluster --namespace dev"
	for each in $($KUBECOMMAND get deployments -o jsonpath="{.items[*].metadata.name}" \| tr " " "\n" \| grep -v tiller-deploy);
	do
	#kubectl delete ns $each
	echo "Deleting deployment $each"
	$KUBECOMMAND delete deployment $each
	done

srkiNZ84 / Dockerfile-fbprophet

Created March 3, 2020 10:01

Dockerfile to generate docker image with fbprophet and jupyter installed

	FROM ubuntu:19.10
	RUN apt update && apt install -y python3 python3-dev python3-pip vim wget
	RUN pip3 install numpy plotly pandas
	RUN pip3 install fbprophet
	RUN pip3 install jupyter
	RUN mkdir /fbprophet
	WORKDIR /fbprophet
	RUN wget https://raw.githubusercontent.com/facebook/prophet/master/examples/example_wp_log_peyton_manning.csv
	ENTRYPOINT jupyter notebook --ip=0.0.0.0 --port=8888 --allow-root

srkiNZ84 / catchall.py

Created February 18, 2020 09:07

Python script demonstrating using annotations to catch all errors