Pavel Tishkov fl64

cloud-init is absolute cancer. Its code is horrible. It has no documentation at all.

It took me 5 fucking hours to figure out how to properly configure networking on recent cloud-init (Ubuntu 16.04 cloud image) with local datasource.

It's not mentioned anywhere you need to provide dsmode: local. (but only if you need network-config, besides that everything is fine; someone below noted that -m flag does the same thing, good to know) Of course nobody needs documentation for network-config format either. (cloudinit/net/__init__.py is a protip, enjoy the feces dive)

Oh, and by the way - no, it's not possible to provide network-config to uvt-kvm without patching shit.

Symmetic encryption

For symmetic encryption, you can use the following:

To encrypt:

openssl aes-256-cbc -salt -a -e -in plaintext.txt -out encrypted.txt

To decrypt:

In your local clone of your forked repository, you can add the original GitHub repository as a "remote". ("Remotes" are like nicknames for the URLs of repositories - origin is one, for example.) Then you can fetch all the branches from that upstream repository, and rebase your work to continue working on the upstream version. In terms of commands that might look like:

Add the remote, call it "upstream":

git remote add upstream https://github.com/whoever/whatever.git

Fetch all the branches of that remote into remote-tracking branches, such as upstream/master:

git fetch upstream

	# Add this snippet to the top of your playbook.
	# It will install python2 if missing (but checks first so no expensive repeated apt updates)
	# [email protected]

	- hosts: all
	gather_facts: False

	tasks:
	- name: install python 2
	raw: test -e /usr/bin/python \|\| (apt -y update && apt install -y python-minimal)

	## This configuration file expects certain environment variables to be available.
	## You can add them to /etc/default/td-agent:
	## AWS_REGION
	## AWS_VPC_ID
	## AWS_INSTANCE_ID
	<source>
	@type syslog
	port 42185
	bind 127.0.0.1
	tag rsyslog

	package main

	import (
	"fmt"
	"sync"
	"time"
	)

	func main() {
	var myWaitGroup sync.WaitGroup

	// curl -X POST -H "Content-Type: application/octet-stream" --data-binary '@filename' http://127.0.0.1:5050/upload

	package main

	import (
	"fmt"
	"io"
	"net/http"
	"os"
	"time"

	# import config.
	# You can change the default config with `make cnf="config_special.env" build`
	cnf ?= config.env
	include $(cnf)
	export $(shell sed 's/=.*//' $(cnf))

	# import deploy config
	# You can change the default deploy config with `make cnf="deploy_special.env" release`
	dpl ?= deploy.env
	include $(dpl)

	bash -c 'while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' localhost:9000)" != "200" ]]; do sleep 5; done'

	# also check https://gist.github.com/rgl/c2ba64b7e2a5a04d1eb65983995dce76

	#
	# Read from journalctl outputting json and sort the data by program frequency
	#
	# https://blog.kylemanna.com/linux/systemd-journalctl-sort-by-frequency
	#
	# Author: Kyle Manna
	#
	# invocation: journalctl -o json --since "1 month ago" \| jq -s -f systemd-journalctl-sort-by-program-frequency.jq
	#