kevashcraft

Kubernetes on DigitalOcean with CoreOS

Let's look at an example of how to launch a Kubernetes cluster from scratch on DigitalOcean, including kubeadm, an Nginx Ingress controller, and Letsencrypt certificates.

Overview

Environment

We'll be creating a four-node cluster (k8s-master, k8s-000...k8s-002), load balancer, and ssl certificates.

Table of Contents

1. Install Kubernetes

subfuzion

Overview

This gist is based on the information available at golang/dep, only slightly more terse and annotated with a few notes and links primarily for my own personal benefit. It's public in case this information is helpful to anyone else as well.

I initially advocated Glide for my team and then, more recently, vndr. I've also taken the approach of exerting direct control over what goes into vendor/ in my Dockerfiles, and also work from isolated GOPATH environments on my system per project to ensure that dependencies are explicitly found under vendor/.

At the end of the day, vendoring (and committing vendor/) is about being in control of your dependencies and being able to achieve reproducible builds. While you can achieve this manually, things that are nice to have in a vendoring tool include:

roylee0704

docker logs nginx 2>&1 | grep "127." 

# ref: http://stackoverflow.com/questions/34724980/finding-a-string-in-docker-logs-of-container

wavezhang

wget -c --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie"  https://download.oracle.com/otn-pub/java/jdk/12.0.2+10/e482c34c86bd4bf8b56c0b35558996b9/jdk-12.0.2_linux-x64_bin.tar.gz

henriquemenezes

-- Get Max ID from table
SELECT MAX(id) FROM table;

-- Get Next ID from table
SELECT nextval('table_id_seq');

-- Set Next ID Value to MAX ID
SELECT setval('table_id_seq', (SELECT MAX(id) FROM table));

siers

#!/bin/bash

while sleep 0.5; do vim --startuptime "$@" >(./startup-info) +qall; done

# usage: ./collect-times
#   Running this will collect startup times in `times' directory.
#   It will run it multiple times so that the averages start converging.
#   Whenever you remove a plugin, it gets stored as a different version,
#   which will be shown at 'watch ./watcher'.

commonquail

#!/bin/bash
set -o errexit

ncursesw_dir=/usr/include/ncursesw

[[ -d "$ncursesw_dir" ]] ||
{
	echo "fatal: ncursesw not found at ${ncursesw_dir}" >&2
	exit 1
}

Finkregh

[Unit]
Description=Live Syncing (Mirror) Daemon
After=network.target

[Service]
Restart=always
Type=simple
Nice=19
#EnvironmentFile=-/etc/default/lsyncd
#ExecStart=/usr/bin/sh -c 'eval `/usr/bin/lsyncd -nodaemon $LSYNCD_OPTIONS /etc/lsyncd/lsyncd.conf.lua`'

Manouchehri

# Source:
# https://www.cloudflare.com/ips
# https://support.cloudflare.com/hc/en-us/articles/200169166-How-do-I-whitelist-CloudFlare-s-IP-addresses-in-iptables-

for i in `curl https://www.cloudflare.com/ips-v4`; do iptables -I INPUT -p tcp -m multiport --dports http,https -s $i -j ACCEPT; done
for i in `curl https://www.cloudflare.com/ips-v6`; do ip6tables -I INPUT -p tcp -m multiport --dports http,https -s $i -j ACCEPT; done

# Avoid racking up billing/attacks
# WARNING: If you get attacked and CloudFlare drops you, your site(s) will be unreachable. 
iptables -A INPUT -p tcp -m multiport --dports http,https -j DROP

andrewluetgers

var webpack = require('webpack'),
	path = require('path'),
	ExtractTextPlugin = require("extract-text-webpack-plugin"),
	isDev = process.env.NODE_ENV;

var config = {
	cache: true,
	resolve: {
		extensions: ["", ".js", ".css", ".styl"]