jackblk

Note

This tutorial is for Ubuntu & Squid3. Use AWS, Google cloud, Digital Ocean or any services with Ubuntu to follow this tutorial.

Install squid & update

sudo apt-get update
sudo apt-get install squid3
sudo apt-get install apache2-utils

psxvoid

#!/bin/sh
# based on https://gist.github.com/ipedrazas/9c622404fb41f2343a0db85b3821275d

# delete all evicted pods from all namespaces
kubectl get pods --all-namespaces | grep Evicted | awk '{print $2 " --namespace=" $1}' | xargs kubectl delete pod

# delete all containers in ImagePullBackOff state from all namespaces
kubectl get pods --all-namespaces | grep 'ImagePullBackOff' | awk '{print $2 " --namespace=" $1}' | xargs kubectl delete pod

# delete all containers in ImagePullBackOff or ErrImagePull or Evicted state from all namespaces

jpswade

Find the original here article here: Devops Best Practices

DevOps started out as "Agile Systems Administration". In 2008, at the Agile Conference in Toronto, Andrew Shafer posted an offer to moderate an ad hoc "Birds of a Feather" meeting to discuss the topic of "Agile Infrastructure". Only one person showed up to discuss the topic: Patrick Debois. Their discussions and sharing of ideas with others advanced the concept of "agile systems administration". Debois and Shafer formed an Agile Systems Administrator group on Google, with limited success. Patrick Debois did a presentation called "Infrastructure and Operations" addressing

0x4D31

Transforming Code into Beautiful, Idiomatic Python

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides.

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Looping over a range of numbers

for i in [0, 1, 2, 3, 4, 5]:

kotlav

Another solution

Get the latest cacert.pem file from wget http://curl.haxx.se/ca/cacert.pem And set these two ENV vars
export SSL_CERT_DIR=/path-to_pem_dir
export SSL_CERT_FILE=/path-to_pem_file

Best solution

Re-install your rvm ruby version without the binary.
rvm uninstall <your_ruby_version>
rvm install --disable-binary

benschwarz

Apps

• Postico client for mac
• pgcli - Postgres CLI with autocompletion and syntax highlighting
• pghero - Server and query performance dashboard

Tools

• PEV - Query planning / Explain analyze visualisation
• PostgreSQL's explain analyze made readable

tute

A top-down look into Elixir (for Rubyists)

• Phoenix (as "Rails for Elixir")
  • Rails and Phoenix can get suspiciously similar
  • A code sample:
• controller.rb

itsprdp

####################################################
# WARNING: Don't use this on production environments
####################################################
# Login to psql terminal with postgres user
psql -U postgres
DROP ROLE root; # Run this if role root already exists
CREATE ROLE root WITH SUPERUSER LOGIN PASSWORD NULL;
createdb root;

jzelinskie

package main

import (
	"log"
	"time"

	"golang.org/x/net/context"
	"google.golang.org/grpc"

	pb "github.com/jzelinskie/grpc/simple"

omnibs

Comparative Benchmark Numbers @ Rackspace

I've taken the benchmarks from Matthew Rothenberg's phoenix-showdown, updated Phoenix to 0.13.1 and ran the tests on the most powerful machines available at Rackspace.

Results

Framework	Throughput (req/s)	Latency (ms)	Consistency (σ ms)