tzmartin

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nrollr

Installing Node.js on Amazon Linux AMI

The following will guide you through the process of installing Node.js on an AWS EC2 instance running Amazon Linux AMI 2016.09 - Release Notes

For this process I'll be using a t2.micro EC2 instance running Amazon Linux AMI (ami-d41d58a7). Once the EC2 instance is up-and-running, connect to your server via ssh

• Make sure our server has the latest packages : sudo yum update -y

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.

zulhfreelancer

It's important to note that running this reset will drop any existing data you have in the application

How to reset PG Database on Heroku?

• Step 1: heroku restart
• Step 2: heroku pg:reset DATABASE (no need to change the DATABASE)
• Step 3: heroku run rake db:migrate
• Step 4: heroku run rake db:seed (if you have seed)

One liner

mikob

Elastic Load Balancer, CloudFront and Let's Encrypt

jlebon

This gist is mostly based on the dnsmasq appendix from the openshift-training repo. However, I updated it and included fixes for the many gotchas I found along the way.

This is useful for folks who want to set up a DNS service as part of the cluster itself, either because they cannot easily change their DNS setup outside of the cluster, or just because they want to keep the cluster setup self-contained.

joekur

Proper use of html_safe

Let's look at an innocuous piece of ruby. Consider some view code showing a user's name and phone number:

"#{first_name} #{last_name} #{phone}"

Great - this is very succinct, readable, and can easily be extracted to a method in a

levelsio

<?
/////////////////////
// slack2html
// by @levelsio
/////////////////////
//
/////////////////////
// WHAT DOES THIS DO?
/////////////////////
//

akora

curl -O -L https://dl.bintray.com/mitchellh/packer/packer_0.7.5_darwin_amd64.zip
unzip packer_0.7.5_darwin_amd64.zip
sudo mv packer_0.7 /usr/local/packer
sudo chown $USER /usr/local/packer/

# then update your .bash_profile with the new path e.g.:
# export PATH="/usr/local/git/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/local/packer:$PATH"

garystafford

###############################################################################
# Helpful Docker commands and code snippets
###############################################################################

### CONTAINERS ###
docker stop $(docker ps -a -q) #stop ALL containers
docker rm -f $(docker ps -a -q) # remove ALL containers
docker rm -f $(sudo docker ps --before="container_id_here" -q) # can also filter

# exec into container