marzocchi

zstyle ':notify:*' error-icon "https://media3.giphy.com/media/10ECejNtM1GyRy/200_s.gif"
zstyle ':notify:*' error-title "wow such #fail"
zstyle ':notify:*' success-icon "https://s-media-cache-ak0.pinimg.com/564x/b5/5a/18/b55a1805f5650495a74202279036ecd2.jpg"
zstyle ':notify:*' success-title "very #success. wow"

charity

#!/bin/bash

# Usage: ./init.sh once to initialize remote storage for this environment.
# Subsequent tf actions in this environment don't require re-initialization, 
# unless you have completely cleared your .terraform cache.
#
# terraform plan  -var-file=./production.tfvars 
# terraform apply -var-file=./production.tfvars 

tf_env="production"

bitjockey42

You do not need a separate /boot partition unless you have an LVM setup (used in dm-crypt setups).

Run ubiquity -b to open the installer with the option of skipping grub installation (since we're using systemd-boot).

When you get to the screen "Ubuntu has finished installation" choose Continue testing.

Open a Terminal.

Chroot into the new system.

maxvt

Currently, there is an explosion of tools that aim to manage secrets for automated, cloud native infrastructure management. Daniel Somerfield did some work classifying the various approaches, but (as far as I know) no one has made a recent effort to summarize the various tools.

This is an attempt to give a quick overview of what can be found out there. The list is alphabetical. There will be tools that are missing, and some of the facts might be wrong--I welcome your corrections. For the purpose, I can be reached via @maxvt on Twitter, or just leave me a comment here.

There is a companion feature matrix of various tools. Comments are welcome in the same manner.

lmmendes

Instructions to DUMP localy a Elasticache Redis database

Connect to Redis CLI

$ redis-cli

Enable the current redis as a slave for the master node

syafiqfaiz

1. Change your database RDS instance security group to allow your machine to access it.
   • Add your ip to the security group to acces the instance via Postgres.
2. Make a copy of the database using pg_dump
   • $ pg_dump -h <public dns> -U <my username> -f <name of dump file .sql> <name of my database>
   • you will be asked for postgressql password.
   • a dump file(.sql) will be created
3. Restore that dump file to your local database.
   • but you might need to drop the database and create it first
   • $ psql -U <postgresql username> -d <database name> -f <dump file that you want to restore>

• the database is restored

gene1wood

#!/bin/bash

usage () {
  cat <<DOCUMENTATIONXX
Usage : . $0 ROLE_ARN [PARENT_PROFILE_NAME]
        ^--- Note that this script must be sourced not executed

This tool will generate temporary credentials for an assumed role, save
those ephemeral credentials in the awscli config and set the alias of
"aaws" to use this new ephemeral awscli profile

nh2

I believe the following is the best way to work with Nagle's algorithm / TCP_NODELAY / TCP_CORK.

It is described in this RedHat manual and the verdict is:

• Set TCP_NODELAY = 1, always.
• If you can batch data for sending by creating a buffer manually, or using writev(), prefer that.
• If you cannot (e.g. "when using different libraries that provides abstractions for layers" from the above manual):
  • Set TCP_CORK = 1, then write the data, then set TCP_CORK = 0.
• This builds a packet in kernel space and then flushes it out.

scalp42

Simple collection of Groovy scripts to help me maintain some Jenkins systems.

See also https://wiki.jenkins-ci.org/display/JENKINS/Jenkins+Script+Console

chrisferry

define :docker_ecr_login, 
       region: 'us-east-1',
       registry_url: nil do 

  include_recipe 'poise-python::default'

  python_package 'awscli' do
    version node['systems']['awscli']['version']
    action :upgrade
  end