Permission denied (publickey) error when doing cap deploy

I encountered this when trying to do a capistrano deploy on one of client's server. This error means that the server that's trying to fetch from repository on Github does not have permission to do so. We can resolve this with either:

• Adding server's public key to the Github repo's list of deploy keys.
• Use ssh agent forwarding so Github thinks it's you who's doing the deploy.

If ssh-agent isn't running, run the following in terminal.

exec ssh-agent bash

Check for a disabled link with Capybara + Rspec.

Styling a callout count box in CSS

Eg. Fork count in Github

Check if a dom element has children

$('#foo).children().length > 0

Added message to Campfire chatroom for Capistrano deploys

# Gemfile
gem 'capistrano-campfire'
gem 'tinder'

# config/deploy.rb
require 'capistrano/campfire'
require 'tinder'

namespace :campfire do
  desc "Send a message to the campfire chat room"
  task :snitch do
    campfire = Tinder::Campfire.new YOUR_CAMPFIRE_ACCOUNT, :ssl => true, :token => YOUR_CAMPFIRE_TOKEN
    room = campfire.find_room_by_name YOURC_CAMPFIRE_CHATROOM
    snitch_message = fetch(:snitch_message) { ENV['MESSAGE'] || abort('Capfire snitch message is missing. Use set :snitch_message, "Your message"') }
    room.speak(snitch_message)
  end

  desc "Send a message to the campfire chat room about the deploy start"
  task :snitch_begin do
    set :snitch_message, "BEGIN DEPLOY [#{stage.upcase}]: #{ENV['USER']}, #{branch}/#{real_revision[0, 7]} to #{deploy_to}"
    snitch
  end

  desc "Send a message to the campfire chat room about the deploy end"
  task :snitch_end do
    set :snitch_message, "END DEPLOY [#{stage.upcase}]: #{ENV['USER']}, #{branch}/#{real_revision[0, 7]} to #{deploy_to}"
    snitch
  end

  desc "Send a message to the campfire chat roob about the rollback"
  task :snitch_rollback do
    set :snitch_message, "ROLLBACK [#{stage.upcase}]: #{ENV['USER']}, #{latest_revision[0, 7]} to #{previous_revision[0, 7]} on #{deploy_to}"
    snitch
  end
end

before :deploy do
  campfire.snitch_begin unless ENV['QUIET'].to_i > 0
end

after :deploy do
  campfire.snitch_end unless ENV['QUIET'].to_i > 0
end

Permission denied (publickey) error when trying to do cap deploy

My solution was to run in my terminal

ssh-add

Seemed like my there wasn't an identity associated with my ssh public key so Github rejected capistrano attempt to git clone from the deployment server.

Top 3 hosted CI (continuous integration) for Rails apps

Here's my summary of top 3 hosted solutions for Rails continuous integration are:

- https://semaphoreapp.com/features
- https://www.circleci.com/
- Tddium

Tddium looks very configurable and gives power to the commandline, eg. run builds from local console on branches. $15/mth for 10 worker hours.

http://docs.tddium.com/

CircleCI had good reviews and sounded like it runs builds really fast. Like Tddium, it's configurable via a yaml file. No official price plans on website but responded via twitter that theirs plans starts from $19.

http://blog.exceptional.io/news/circleci/

Semaphore selling point's their "simple stupid" approach to CI. Oauth via Github, add collaborators and boom. Runs are every git push and at a price of $14/mth, it seemed the cheapest of 'em lot.

https://semaphoreapp.com/features

My vote is for Semaphore since it's the cheapest and simplest to use for a small project.