AlexKalinin

Checking that the folder was continuesly mounted while the long operation was being performed.

Why?

I have external hard-drive where I store backups created by MacOS TimeMachine. This hard drive is connected by usb dock-station, which is not protected from power failure. I just wanted to be sure, that, first TimeMachine backup (which is quite a lengthy operation) was not interrapted.

Usage:

# assume that you already have ruby on your computer

if no, go to https://rvm.io/

AlexKalinin

# Simple extension of Net::FTP to allow uploading a stream instead of a file
# This allows for transferring of files between servers without downloading entire file first

# The code below is a modification of the storbinary method in Net::FTP
# https://github.com/ruby/ruby/blob/trunk/lib/net/ftp.rb#L686
# It goes without saying that the code may break at anytime and may or may not work with other
# features of Net::FTP such as using Resume.

require 'net/ftp'

AlexKalinin

NOTE: This Gist concerns the old Linode KVM Beta, NOT the current Manager. Please see linode/docs#501 (comment) for more up-to-date instructions.

You will need:

• Windows Server 2012 R2 iso. Obtain from MSDN
• A server with libvirt/virt-manager/KVM/etc set up.
• Fedora-sourced Windows virtio drivers: https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.103-2/virtio-win-0.1.103.iso
• A Linode 1GB in the KVM beta, booted into Rescue mode, with a 20GB(20480MB) "raw" image.

On the KVM source, run the following to create a VM:

AlexKalinin

# Precondition: Git for Windows 2.9.0 + Windows 7, other version of Git for Windows & Windows XP and Windows 10 should also be supported

# In /etc/ssh/sshd_config, set UsePrivilegeSeparation to no
# You can also change other settings of SSHD like port in this file

# Generate key pairs
ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -q -N ""
ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -q -N ""
ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -q -N ""
ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -q -N ""

AlexKalinin

# Recursively diff two hashes, showing only the differing values.
# By Henrik Nyh <http://henrik.nyh.se> 2009-07-14 under the MIT license.
#
# Example:
#
# a = {
#   "same"   => "same",
#   "diff"   => "a",
#   "only a" => "a",
#   "nest" => {

AlexKalinin

# got from here: https://stackoverflow.com/a/43819672



# Define some required dependencies
require "bundler/inline"
gemfile(false) do
  source "https://rubygems.org"
  gem "activerecord", "~> 4.2.8"
  gem "sqlite3"

AlexKalinin

# Generate a self-signed Certificate and a Private Key
openssl req -x509 -nodes -days 365 -newkey rsa:1024 -keyout pkey.pem -out cert.crt

AlexKalinin

How to config rabbitmq server cluster [3 nodes]

Edit /etc/hosts

vi /etc/hosts
192.168.10.157  rabbitmq-1
192.168.10.159  rabbitmq-2
192.168.10.161  rabbitmq-3

AlexKalinin

#!/usr/bin/env ruby

require 'bundler'
Bundler.require(:default)
require 'active_support'
require 'active_record'
require 'pry'

@root_path = File.expand_path File.dirname(__FILE__)
@config = YAML.load_file(File.join(@root_path, 'config.yml'))

AlexKalinin

def foo(p1:, p2:, p3:)
  puts "p1: #{p1}"
  puts "p2: #{p2}"
  puts "p3: #{p3}"
end

def bar
  h1 = { p1: 11, p2: 22, p3: 33 }
  foo h1
end