estahn

ALTER TABLE "public"."foo" ADD COLUMN "id" INTEGER;
CREATE SEQUENCE "public"."foo_id_seq";
UPDATE foo SET id = nextval('"public"."foo_id_seq"');
ALTER TABLE "public"."foo" ALTER COLUMN "id" SET DEFAULT nextval('"public"."foo_id_seq"');
ALTER TABLE "public"."foo" ALTER COLUMN "id" SET NOT NULL;
ALTER TABLE "public"."foo" ADD UNIQUE ("id");
ALTER TABLE "public"."foo" DROP CONSTRAINT "foo_id_key" RESTRICT;
ALTER TABLE "public"."foo" ADD PRIMARY KEY ("id");

estahn

aws ec2 describe-instances \
  --filters Name=dns-name,Values=ec2-12-345-678-90.myregion.compute.amazonaws.com \
  | jq '.Reservations [] .Instances [] .InstanceId'

estahn

aws ec2 describe-instances \
  --filters Name=dns-name,Values=ec2-12-345-678-90.myregion.compute.amazonaws.com \
  | jq '.Reservations [] .Instances [] .InstanceId' \
  | xargs -n1 aws ec2 get-console-output --instance-id \
  | jq '.Output'

estahn

/**
 * WebP support check
 *
 * The cookie will be set for the top level domain, e.g. ".zanui.com.au".
 * This will enable access from "static.zanui.com.au".
 *
 * Script might not work for local environments.
 *
 * @author <a href="mailto:enrico.stahn@rocket-internet.de">Enrico Stahn</a>
 */

estahn

<link rel="import" href="../core-icon-button/core-icon-button.html">
<link rel="import" href="../core-toolbar/core-toolbar.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;

estahn

#!/bin/sh

processes=$(lsof | cut -f1 -d" " | sort | uniq | xargs -n1 -I% sh -c 'echo % `pidof % | sed -e "s/ /,/g"`' | cut -d" " -f1 -s)

for process in $processes; do
  echo $process $(pidof $process | sed -e "s/ /,/g" | xargs -I% -n1 sh -c 'lsof -a -p % | wc -l')
done

estahn

Nginx Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400,000 to 500,000 requests per second (clustered), most what i saw is 50,000 to 80,000 (non-clustered) requests per second and 30% CPU load, course, this was 2xIntel Xeon with HT enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

First, you will need to install nginx, my way to install nginx is compiling it from source, but for now we will use apt-get

estahn

#!/bin/sh

ELBS=`aws elb describe-load-balancers | jq -r '.LoadBalancerDescriptions[] | select(.ListenerDescriptions[].Listener.SSLCertificateId) | .DNSName'`

for elb in ${ELBS}; do
  OUTPUT=`echo | timeout 2 openssl s_client -connect ${elb}:443 2>/dev/null | openssl x509 -noout -enddate 2> /dev/null`
  echo "${elb};${OUTPUT}"
done

estahn

#!/usr/bin/env bash
set -euo pipefail

echo "Installing docker engine"

sudo sh -c 'echo "deb https://apt.dockerproject.org/repo ubuntu-$(lsb_release -cs) main" > /etc/apt/sources.list.d/docker.list'
curl -fsSL https://apt.dockerproject.org/gpg | sudo apt-key add -
sudo apt-key fingerprint 58118E89F3A912897C070ADBF76221572C52609D
sudo apt-get update
sudo apt-get -y install "docker-engine=17.03.0~ce-0~ubuntu-$(lsb_release -cs)"

estahn

allow_duplicates: yes
dependencies:
  - { role: roleA, tasks: [1] }