philandstuff

Devopsdays London 2017

initial session, bob walker (@rjw1)

• welcome everyone!
• we have a code of conduct
• thanks to organisers, sponsors, etc

Humane Teams at home and around the world

leonardofed

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

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reggi

How to setup AWS lambda function to talk to the internet and VPC

I'm going to walk you through the steps for setting up a AWS Lambda to talk to the internet and a VPC. Let's dive in.

So it might be really unintuitive at first but lambda functions have three states.

1. No VPC, where it can talk openly to the web, but can't talk to any of your AWS services.
2. VPC, the default setting where the lambda function can talk to your AWS services but can't talk to the web.
3. VPC with NAT, The best of both worlds, AWS services and web.

kern

Kubernetes + AWS ECR = ❤️

Makefile and YAML templates for automating the use of AWS Elastic Container Registry with Kubernetes.

Based off of this awesome Redsaid blog post.

Requirements

• Amazon ECR, along with your AWS account ID and the region your ECR is in
• AWS CLI

fpytloun

#!/usr/bin/env python3

"""
Display gluster traffic
This tool uses gluster profiling feature, parsing cumulative statistics.

To understand correctly the results, you have to divide overall write statistics with number of replicas.
Also striped volumes needs to be taken in mind - overall statistics just print sum of all bricks
read/written bytes.

nl5887

func ipInMasks(ip net.IP, masks []interface{}) bool {
	for _, proxy := range masks {
		var mask *net.IPNet
		var err error

		switch t := proxy.(type) {
		case string:
			if _, mask, err = net.ParseCIDR(t); err != nil {
				panic(err)
			}

acolyer

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

rcoup

#!/bin/bash
set -e

# Usage:
#   rsync_parallel.sh [--parallel=N] [rsync args...]
# 
# Options:
#   --parallel=N	Use N parallel processes for transfer. Defaults to 10.
#
# Notes:

jkstill

Decoding the data in /proc/net/tcp:

Linux 5.x  /proc/net/tcp
Linux 6.x  /proc/PID/net/tcp

Given a socket:

$ ls -l  /proc/24784/fd/11
lrwx------ 1 jkstill dba 64 Dec  4 16:22 /proc/24784/fd/11 -> socket:[15907701]

skihero

Was trying to create an rpm from the installed haproxy binaries. 
Ran into this problem. 

Turns out we need to do a prelink -u haproxy on the binary that we're packaging. 
The binary had come from a different machine than the place where we're building it.