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@ranjib
ranjib / ChefProfile.md
Last active February 14, 2023 01:42
Chef profiling with ruby-prof

install KCacheGrind

apt-get install kcachegrind

Sandbox things

Create a sandbox folder and install Chef and rubyprof there with bundler

@ranjib
ranjib / unconstrained_cookbooks.rb
Last active July 24, 2020 05:55
require 'chef'
Chef::Config.from_file('knife.rb')
envs = Chef::Environment.list.keys
q = Chef::Search::Query.new
envs.each do |e|
constrained_cookbooks = Chef::Environment.load(e).cookbook_versions.keys
all_cookbooks =[]
nodes = q.search(:node, "chef_environment:#{e}").first.reject(&:nil?)
nodes.select{|n| n.attribute?(:recipes)}.each do |n|
n.recipes.map{|r| r.split('::')[0]}.each do |cookbook|
@ranjib
ranjib / org1-prod.rb
Created June 18, 2015 22:13
Consuming common datra across environments using Chef's ruby environment DSL
# located at chef_repo/environments/org1-prod.rb
require 'deep_merge'
name 'org1-prod'
description 'Production environment for org1'
org1_yml_path = File.expand_path('../common/org1.yml', __FILE__)
common = YAML.load_file(org1_yml_path)
default_attributes(
common['default'].deep_merge!(
# declare all you org1-prod specific things here.
@ranjib
ranjib / timer_reset.go
Created January 17, 2018 04:37
reef-pi reset timers
package main
import (
"fmt"
"github.com/boltdb/bolt"
"os"
"time"
)
const bucket = "timers"
@ranjib
ranjib / dd-user.txt
Created August 30, 2016 20:44
DD User email
Received: by 10.194.72.228 with SMTP id g4csp30259wjv;
Tue, 30 Aug 2016 13:32:34 -0700 (PDT)
X-Received: by 10.202.245.88 with SMTP id t85mr5521820oih.202.1472589154488;
Tue, 30 Aug 2016 13:32:34 -0700 (PDT)
Return-Path: <johnc.tyus@outlook.com>
Received: from SNT004-OMC1S9.hotmail.com (snt004-omc1s9.hotmail.com. [65.55.90.20])
by mx.google.com with ESMTPS id o41si11702005oto.113.2016.08.30.13.32.34
for <ranjib@pagerduty.com>
(version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128);
@ranjib
ranjib / squash.go
Last active May 25, 2016 21:28
docker image squashing
import(
"github.com/docker/engine-api/client"
"github.com/docker/engine-api/types"
)
func Squash() {
defaultHeaders := map[string]string{"User-Agent": "abc-1.0"}
cli, _ := client.NewClient("unix:///var/run/docker.sock", "v1.22", nil, defaultHeaders)
ctx := context.Background()
saveBody, _ := cli.ImageSave(ctx, []string{"image-id"})
src := types.ImageImportSource{
@ranjib
ranjib / Dockerfile
Last active January 3, 2016 15:19
FROM ubuntu
RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe" > /etc/apt/sources.list
RUN apt-get update
RUN apt-get install -y x11vnc xvfb firefox
RUN mkdir /home/ubuntu/.vnc
RUN x11vnc -storepasswd 1234 /home/ubuntu/.vnc/passwd
RUN bash -c 'echo "firefox" >> /home/ubuntu/.bashrc'
@ranjib
ranjib / trippy.rb
Created January 17, 2014 06:31
c = LXC::Container.new('foo')
c.create('ubuntu')
c.start
# we'll start tripping from here
reader, writer = IO.pipe
c.attach(wait: true) do
reader.close # its a process clone, so you have all the variable
x = Dir['/*']
writer.write(Marshal.dump(x))
@ranjib
ranjib / Container
Last active January 3, 2016 13:19
name 'chef'
from 'ubuntu'
run 'apt-get install curl -y'
run 'curl -L https://www.opscode.com/chef/install.sh | sudo bash'
@ranjib
ranjib / inside_chef.rb
Last active January 2, 2016 18:39
execute "apt_update" do
command "apt-get update -y"
end
%w{ ack-grep autoconf automake autotools-dev binutils bridge-utils
build-essential coreutils debootstrap dnsmasq-base doxygen fakeroot
git gnutls-bin golang golang-src htop iproute2 libdevmapper-dev
libgnutls-dev libgnutls26 make ncurses-base ncurses-bin ncurses-term libssl-dev
openssl python3.3 python3.3-dev strace tcpdump telnet tmux vim wget zlib1g
zlib1g-dev python3-software-properties}.each do |pkg|