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Siarhei Kavaliou serg-kovalev

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serg-kovalev /
Last active Oct 20, 2020
Generate RSA256 pem and store pub key in a separate file
openssl genrsa -out jwtRS256private.pem 2048
openssl rsa -in jwtRS256private.pem -outform PEM -pubout -out jwtRS256public.pem
serg-kovalev /
Created Apr 4, 2019 — forked from hone/
Private GitHub repos with Bundler on Heroku

Setting Up Private GitHub Repos with Bundler on Heroku

To get a private GitHub repo to work on Heroku, you can leverage the netrc buildpack in conjunction with the Heroku Ruby buildpack.

When setting up the Gemfile, make sure to use the https GitHub URL. This mechanism does not work with git+ssh.

gem "some_private_gem", git: ""
serg-kovalev / .ebextensions_01-edit-nginx.config
Last active Aug 16, 2018
Elastic Beanstalk nginx configuration tweaks
View .ebextensions_01-edit-nginx.config
command: "cp -n /opt/elasticbeanstalk/support/conf/nginx_config.erb /opt/elasticbeanstalk/support/conf/nginx_config.erb.original"
command: "sh -c \"sed '/string_to_insert_text_after/ i\
\ text_to_be_inserted;' /opt/elasticbeanstalk/support/conf/nginx_config.erb.original > /opt/elasticbeanstalk/support/conf/nginx_config.erb\""
ruby -rsocket -e "trap('SIGINT') { exit }; Socket.tcp_server_loop(8080) { |s,_| puts s.readpartial(1024); puts; s.puts 'HTTP/1.1 200'; s.close }
serg-kovalev / rspec_reset_mock.rb
Last active Nov 28, 2017
Reset Mock/Stub in RSpec
View rspec_reset_mock.rb
View .vimrc
" vimrc
" Author: Zaiste! <>
" Source:
" Have fun!
set nocompatible
filetype on
filetype off
serg-kovalev / backup_via_email.rb
Last active Aug 29, 2015
Sending database backup in email using core ruby
View backup_via_email.rb
require 'net/smtp'
FROM = 'Some name <>'
TO = %w(
SUBJ = "DB backup #{'%Y-%m-%d')}"
# find the last (in 60 mins) backup
filename = `find /path/to/backups/*.sql.gz -mmin -60`.chomp
exit if filename.nil? || filename.empty?
View extract_fixtures.rake
# -*- coding: utf-8 -*-
# DBからデータを取り出してYAMLにする。生成したYAMLはtmp/fixturesに保存される
namespace :db do
namespace :fixtures do
desc "Extract database data to tmp/fixtures directory."
task :extract => :environment do
fixtures_dir = "#{Rails.root}/tmp/fixtures/"
skip_tables = ["schema_info", "schema_migrations", "sessions"]
serg-kovalev /
Created Feb 24, 2015
How to easily backup PostreSQL database. This script automatically deletes old backups
CURRDATE=`date +%Y_%m_%d-%H_%M`
BAK_FILE=/path/to/backups/$SERVERNAME-production-sql-$CURRDATE.sql.gz # change the PATH here
DB_NAME="DB_NAME_HERE" # Change this
function quit {
serg-kovalev / gist:8487870b128b093721e4
Last active Aug 29, 2015 — forked from mikegrassotti/gist:2247065
FactoryGirl upgrade from version 2.* to 3.*
View gist:8487870b128b093721e4
# FactoryGirl3ForYouAndMe
# The new syntax:
# Where to learn sed?
# What needs to change?
find . -type f -name "*.rb" -print0 | xargs -0 grep "Factory.create"
find . -type f -name "*.rb" -print0 | xargs -0 grep ""
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