nginx gives 500 while deploying through chef - ruby-on-rails

I am trying to deploy rails app through chef . I have written a recipe using deploy resource and it deploys without any issues .
deploy "master" do
repo "#{node['git']['repo']}"
action :deploy
branch 'master'
before_migrate do
current_release_directory = release_path
running_deploy_user = "#{node['user']}"
bundler_depot = new_resource.shared_path + '/bundle'
script 'Bundling' do
interpreter 'bash'
cwd current_release_directory
user running_deploy_user
code <<-EOS
bundle install --quiet --path #{bundler_depot} \
EOS
end
script 'Migrating data' do
interpreter 'bash'
cwd current_release_directory
user running_deploy_user
code <<-EOS
bundle exec rake deploy
EOS
end
end
rollback_on_error true;
deploy_to "#{node['app']['directory']}"
environment "RAILS_ENV" => "production"
scm_provider Chef::Provider::Git
user "#{node['user']}"
git_ssh_wrapper "/tmp/ssh_wrapper.sh"
end
When i try to execute again , the nginx gives 500 error , and log says "Cannot stat '/home/ubuntu/apps/current/config.ru; This error means that the Nginx worker process (PID 8094, running as UID 33) does not have permission to access this file" . This issue exists till chef deployment completes . Permissions were unchanged for the directory before and after deployment. How can i get out of this issue ?

Related

Deployment issue using Mina to deploy Rails5 app. Hangs on updating Symlink

After a mina deploy, it's hanging on "Updating the /home/x/app/current symlink". No errors. It just sits there.
I have tried removing the app directory from the server and "mina setup", but still encountering the same problem. I had no issues deploying initially, but it seems any attempt to deploy subsequent releases results in this problem.
I initially followed this guide to deploy: https://www.ralfebert.de/tutorials/rails-deployment/
require 'mina/rails'
require 'mina/git'
require 'mina/rvm'
# Basic settings:
# domain - The hostname to SSH to.
# deploy_to - Path to deploy into.
# repository - Git repo to clone from. (needed by mina/git)
# branch - Branch name to deploy. (needed by mina/git)
set :application_name, 'x'
set :domain, 'x'
set :user, fetch(:application_name)
set :deploy_to, "/home/#{fetch(:user)}/app"
set :repository, 'x'
set :branch, 'x'
set :rvm_use_path, '/etc/profile.d/rvm.sh'
# Optional settings:
# set :user, 'foobar' # Username in the server to SSH to.
# set :port, '30000' # SSH port number.
# set :forward_agent, true # SSH forward_agent.
# shared dirs and files will be symlinked into the app-folder by the 'deploy:link_shared_paths' step.
# set :shared_dirs, fetch(:shared_dirs, []).push('somedir')
set :shared_files, fetch(:shared_files, []).push('config/database.yml', 'config/secrets.yml')
# This task is the environment that is loaded for all remote run commands, such as
# `mina deploy` or `mina rake`.
task :environment do
ruby_version = File.read('.ruby-version').strip
raise "Couldn't determine Ruby version: Do you have a file .ruby-version in your project root?" if ruby_version.empty?
invoke :'rvm:use', ruby_version
end
task :setup do
in_path(fetch(:shared_path)) do
command %[mkdir -p config]
# Create database.yml for Postgres if it doesn't exist
path_database_yml = "config/database.yml"
database_yml = %[production:
database: #{fetch(:user)}
adapter: postgresql
pool: 5
timeout: 5000]
command %[test -e #{path_database_yml} || echo "#{database_yml}" > #{path_database_yml}]
# Create secrets.yml if it doesn't exist
path_secrets_yml = "config/secrets.yml"
secrets_yml = %[production:\n secret_key_base:\n #{`rake secret`.strip}]
command %[test -e #{path_secrets_yml} || echo "#{secrets_yml}" > #{path_secrets_yml}]
# Remove others-permission for config directory
command %[chmod -R o-rwx config]
end
end
desc "Deploys the current version to the server."
task :deploy do
# uncomment this line to make sure you pushed your local branch to the remote origin
# invoke :'git:ensure_pushed'
deploy do
# Put things that will set up an empty directory into a fully set-up
# instance of your project.
invoke :'git:clone'
invoke :'deploy:link_shared_paths'
invoke :'bundle:install'
# invoke :'rails:db_migrate'
invoke :'rails:assets_precompile'
invoke :'deploy:cleanup'
on :launch do
command "sudo service #{fetch(:user)} restart"
end
end
# you can use `run :local` to run tasks on local machine before of after the deploy scripts
# run(:local){ say 'done' }
end
# For help in making your deploy script, see the Mina documentation:
#
# - https://github.com/mina-deploy/mina/tree/master/docs
I used the same great tutorial, got the same problem.
You can run mina deploy --verbose to see where it stuck.
For me it was not the symlink updating, but sudo service rails-demo restart command.
I used sudo visudo on the server and put the following line there:
rails-demo ALL=(ALL) NOPASSWD: /usr/sbin/service rails-demo restart
Now it works like a charm.
Good luck!

capistrano-resque error with remote Redis DB

Hey I'm configuring my capistrano-resque, and I have a remote redis DB.
This is how my capistrano-resque configuration looks in deploy.rb:
set :resque_environment_task, true
role :resque_worker, ENV['REDIS_SERVER']
role :resque_scheduler, ENV['REDIS_SERVER']
set :workers, { "*" => 1 }
When I try to run cap production git:check, deploy:check I get the following error:
INFO [1df5c9be] Running /usr/bin/env mkdir -p /tmp/mk/ as deploy#ipaddress
INFO [b91cbf1f] Running /usr/bin/env mkdir -p /tmp/mk/ as redis#//x
DEBUG [1df5c9be] Command: /usr/bin/env mkdir -p /tmp/mk/
DEBUG [b91cbf1f] Command: /usr/bin/env mkdir -p /tmp/mk/
(Backtrace restricted to imported tasks)
cap aborted!
SSHKit::Runner::ExecuteError: Exception while executing as redis#//x: getaddrinfo: nodename nor servname provided, or not known
SocketError: getaddrinfo: nodename nor servname provided, or not known
It seems like there is something with redis#//x ? I have the full connection string stored as a local env both locally and in production:
redis://x:[password]#aws-eu-west.0.dblayer.com:10156
Anybody have an idea on what's wrong?
The problem is that you're supplying a Redis address instead of an SSH address. Capistrano uses SSHKit to execute remote SSH commands on the server -- whatever you set as the role will be the server it uses. The role :resque_worker line isn't anything fancy we added in capistrano-resque, it's just assigning another role for Capistrano/SSHKit to use (in addition to the default app/web/db roles Capistrano includes by default).
In other words, the :resque_worker setting isn't to specify which Redis server contains your job queue, it's to specify which server to run commands like rake resque:work on.
So in a single-server scenario, your :resque_worker role should probably be the same as your role :app ... line, for example:
role :app, "me#example.com"
role :resque_worker, "me#example.com"
Doing so would connect via SSH to to the me account at example.com and execute the commands.
See http://capistranorb.com/documentation/getting-started/preparing-your-application/ (Section 4) for more info on how roles are defined/used.

How do I set up git in deploy.rb in a rails 4 app using mina?

I am trying to use mina to deploy my app to a digital ocean server and have a git repo on bitbucket. I was able to run mina setup' just fine, but when I runmina deploy` I get an error.
my deploy.rb
require 'mina/bundler'
require 'mina/rails'
require 'mina/git'
require 'mina/rbenv' # for rbenv support. (http://rbenv.org)
# require 'mina/rvm' # for rvm support. (http://rvm.io)
# Basic settings:
# domain - The hostname to SSH to.
# deploy_to - Path to deploy into.
# repository - Git repo to clone from. (needed by mina/git)
# branch - Branch name to deploy. (needed by mina/git)
set :rails_env, 'production'
set :domain, 'my.server'
set :deploy_to, '/home/deployer/mysite'
set :repository, 'git#bitbucket.org:me/myproject.git'
set :branch, 'master'
set :user, 'deployer'
set :forward_agent, true
set :port, '22'
# Manually create these paths in shared/ (eg: shared/config/database.yml) in your server.
# They will be linked in the 'deploy:link_shared_paths' step.
set :shared_paths, ['config/database.yml', 'log', 'config/secrets.yml']
# Optional settings:
# set :user, 'foobar' # Username in the server to SSH to.
# set :port, '30000' # SSH port number.
# This task is the environment that is loaded for most commands, such as
# `mina deploy` or `mina rake`.
task :environment do
# If you're using rbenv, use this to load the rbenv environment.
# Be sure to commit your .rbenv-version to your repository.
queue %{
echo "-----> Loading environment"
#{echo_cmd %[source ~/.bashrc]}
}
invoke :'rbenv:load'
# For those using RVM, use this to load an RVM version#gemset.
# invoke :'rvm:use[ruby-1.9.3-p125#default]'
end
# Put any custom mkdir's in here for when `mina setup` is ran.
# For Rails apps, we'll make some of the shared paths that are shared between
# all releases.
task :setup => :environment do
queue! %[mkdir -p "#{deploy_to}/shared/log"]
queue! %[chmod g+rx,u+rwx "#{deploy_to}/shared/log"]
queue! %[mkdir -p "#{deploy_to}/shared/config"]
queue! %[chmod g+rx,u+rwx "#{deploy_to}/shared/config"]
queue! %[touch "#{deploy_to}/shared/config/database.yml"]
queue %[echo "-----> Be sure to edit 'shared/config/database.yml'."]
queue! %[touch "#{deploy_to}/shared/config/secrets.yml"]
queue %[echo "-----> Be sure to edit 'shared/config/secrets.yml'."]
end
desc "Deploys the current version to the server."
task :deploy => :environment do
deploy do
# Put things that will set up an empty directory into a fully set-up
# instance of your project.
invoke :'git:clone'
invoke :'deploy:link_shared_paths'
invoke :'bundle:install'
invoke :'rails:db_migrate'
invoke :'rails:assets_precompile'
to :launch do
invoke :'passenger:restart'
end
end
end
desc "Restarts the nginx server."
task :restart do
invoke :'passenger:restart'
end
namespace :passenger do
task :restart do
queue "mkdir #{deploy_to}/current/tmp; touch #{deploy_to}/current/tmp/restart.txt"
end
end
# For help in making your deploy script, see the Mina documentation:
#
# - http://nadarei.co/mina
# - http://nadarei.co/mina/tasks
# - http://nadarei.co/mina/settings
# - http://nadarei.co/mina/helpers
When I do "mina deploy", I get this error
-----> Loading environment
-----> Loading rbenv
-----> Creating a temporary build path
-----> Cloning the Git repository
Cloning into bare repository '/home/deployer/mysite/scm'...
Host key verification failed.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
! ERROR: Deploy failed.
-----> Cleaning up build
Unlinking current
OK
! Command failed.
Failed with status 19
I have ssh keys set up on bitbucket and Im able to push my repo to it just fine from my computer, I also have an ssh key from my server set up on bitbucket (not sure if it is needed, but I thought i would try it). What could be wrong?
add this in your deploy.rb file
set :term_mode, nil
make sure that you have added server SSH public key on github
You can use your local ssh keys for this.
Use the -A setting of SSH. and set it in mina like set :port, '22 -A' this will append the -A to the ssh command issued by Mina.
Basically it forwards the authentication you use on your deployment server. (like set :forward_agent, true does in Capistrano)
I think best practice however, is to generate a ssh key on the server and set it as a deploy key in your hosted SCM solution.
Your server tries to git from git#bitbucket.org:me/myproject.git, but there is host key at your server.
You can copy your id_rsa.pub and known_hosts file through scp command on server and then run it again. It will work.

run rake task inside rails application

I want to run asset precompile task inside the rails application,As I had many dependencies who will change the code,in that case all the time whenever they change i need to run the script as I cant give server access to them so I am providing the GUI for them from that they alone can run the script,so,I have built UI to run the task with some parameter like
system("Template='#{params[:template]}' Theme='#{params[:theme]}' rake assets:precompile)
I am getting two values from UI(params[:template],params[:theme]).Another thing i want to run this task in another path(site path) means Admin side UI is there that task should execute in Site directory,
if(params[:theme_script] == "true")
template=Template.where(:name => params[:template]).first
if template
theme = template.themes.where(:name => params[:theme]).first
if theme
# Dir.chdir "#{THEMEPATH}"do
# `Template="#{template.name}" Theme="#{theme.name}" rake assets:precompile`
# end
# sleep 10
# system("#{Rails.root.to_s}/lib/shell_script.sh")
# RunRake.run_rake(template.name,theme.name)
# Dir.chdir "#{THEMEPATH}"do
# Rake::Task['assets:precompile'].invoke
# end
ENV["Template"] = template.name
ENV["Theme"] = theme.name
precompile_task = "bundle exec rake assets:precompile --trace 2>&1"
output = Dir.chdir(THEMEPATH) { %x[ #{precompile_task} ] }
flash[:notice] = "Asset created successfully"
else
flash[:notice] = "U have enter invalid data"
end
else
flash[:notice] = "U have enter invalid data"
end
end
This is my code am checking multiple condition and am allowing to execute the task.
I have tried this code by putting in controller and lib, but this is not working.
I have tried with shell script also.
Could please anyone can help me.
You can just setup an environment variable for rails, and then issue #invoke method from a controller. So, prepare the files:
gemfile
gem 'rake'
config/initializers/rake.rb:
Rake.load_rakefile Rails.root.join( 'Rakefile' )
app/controllers/your_controller:
ENV["Template"] = template.name
ENV["Theme"] = theme.name
Rake::Task[ 'assets:precompile' ].invoke
Issue bundle install, then run console rails c, and type:
Rake::Task.tasks.map(&:name).grep 'assets:precompile'
# => ["assets:precompile"]
As you can see, the task assets:precompile is loaded successfully. Then just issue the action for the controller.
To run the task for an other rails app you shell run also the other ruby instance, similar to as you had done:
system( "other_app_run.sh '#{template.name}' '${theme.name}'" )
other_app_run.sh:
#!/bin/bash
source "$HOME/.rvm/scripts/rvm"
cd /other/app/path
export Template="$1"
export Theme="$2"
rake assets:precompile

Deploying a Git subdirectory in Capistrano

My master branch layout is like this:
/ <-- top level
/client <-- desktop client source files
/server <-- Rails app
What I'd like to do is only pull down the /server directory in my deploy.rb, but I can't seem to find any way to do that. The /client directory is huge, so setting up a hook to copy /server to / won't work very well, it needs to only pull down the Rails app.
Without any dirty forking action but even dirtier !
In my config/deploy.rb :
set :deploy_subdir, "project/subdir"
Then I added this new strategy to my Capfile :
require 'capistrano/recipes/deploy/strategy/remote_cache'
class RemoteCacheSubdir < Capistrano::Deploy::Strategy::RemoteCache
private
def repository_cache_subdir
if configuration[:deploy_subdir] then
File.join(repository_cache, configuration[:deploy_subdir])
else
repository_cache
end
end
def copy_repository_cache
logger.trace "copying the cached version to #{configuration[:release_path]}"
if copy_exclude.empty?
run "cp -RPp #{repository_cache_subdir} #{configuration[:release_path]} && #{mark}"
else
exclusions = copy_exclude.map { |e| "--exclude=\"#{e}\"" }.join(' ')
run "rsync -lrpt #{exclusions} #{repository_cache_subdir}/* #{configuration[:release_path]} && #{mark}"
end
end
end
set :strategy, RemoteCacheSubdir.new(self)
For Capistrano 3.0, I use the following:
In my Capfile:
# Define a new SCM strategy, so we can deploy only a subdirectory of our repo.
module RemoteCacheWithProjectRootStrategy
def test
test! " [ -f #{repo_path}/HEAD ] "
end
def check
test! :git, :'ls-remote', repo_url
end
def clone
git :clone, '--mirror', repo_url, repo_path
end
def update
git :remote, :update
end
def release
git :archive, fetch(:branch), fetch(:project_root), '| tar -x -C', release_path, "--strip=#{fetch(:project_root).count('/')+1}"
end
end
And in my deploy.rb:
# Set up a strategy to deploy only a project directory (not the whole repo)
set :git_strategy, RemoteCacheWithProjectRootStrategy
set :project_root, 'relative/path/from/your/repo'
All the important code is in the strategy release method, which uses git archive to archive only a subdirectory of the repo, then uses the --strip argument to tar to extract the archive at the right level.
UPDATE
As of Capistrano 3.3.3, you can now use the :repo_tree configuration variable, which makes this answer obsolete. For example:
set :repo_url, 'https://example.com/your_repo.git'
set :repo_tree, 'relative/path/from/your/repo' # relative path to project root in repo
See http://capistranorb.com/documentation/getting-started/configuration.
We're also doing this with Capistrano by cloning down the full repository, deleting the unused files and folders and move the desired folder up the hierarchy.
deploy.rb
set :repository, "git#github.com:name/project.git"
set :branch, "master"
set :subdir, "server"
after "deploy:update_code", "deploy:checkout_subdir"
namespace :deploy do
desc "Checkout subdirectory and delete all the other stuff"
task :checkout_subdir do
run "mv #{current_release}/#{subdir}/ /tmp && rm -rf #{current_release}/* && mv /tmp/#{subdir}/* #{current_release}"
end
end
As long as the project doesn't get too big this works pretty good for us, but if you can, create an own repository for each component and group them together with git submodules.
You can have two git repositories (client and server) and add them to a "super-project" (app). In this "super-project" you can add the two repositories as submodules (check this tutorial).
Another possible solution (a bit more dirty) is to have separate branches for client and server, and then you can pull from the 'server' branch.
There is a solution. Grab crdlo's patch for capistrano and the capistrano source from github. Remove your existing capistrano gem, appy the patch, setup.rb install, and then you can use his very simple configuration line set :project, "mysubdirectory" to set a subdirectory.
The only gotcha is that apparently github doesn't "support the archive command" ... at least when he wrote it. I'm using my own private git repo over svn and it works fine, I haven't tried it with github but I imagine if enough people complain they'll add that feature.
Also see if you can get capistrano authors to add this feature into cap at the relevant bug.
For Capistrano 3, based on #Thomas Fankhauser answer:
set :repository, "git#github.com:name/project.git"
set :branch, "master"
set :subdir, "relative_path_to_my/subdir"
namespace :deploy do
desc "Checkout subdirectory and delete all the other stuff"
task :checkout_subdir do
subdir = fetch(:subdir)
subdir_last_folder = File.basename(subdir)
release_subdir_path = File.join(release_path, subdir)
tmp_base_folder = File.join("/tmp", "capistrano_subdir_hack")
tmp_destination = File.join(tmp_base_folder, subdir_last_folder)
cmd = []
# Settings for my-zsh
# cmd << "unsetopt nomatch && setopt rmstarsilent"
# create temporary folder
cmd << "mkdir -p #{tmp_base_folder}"
# delete previous temporary files
cmd << "rm -rf #{tmp_base_folder}/*"
# move subdir contents to tmp
cmd << "mv #{release_subdir_path}/ #{tmp_destination}"
# delete contents inside release
cmd << "rm -rf #{release_path}/*"
# move subdir contents to release
cmd << "mv #{tmp_destination}/* #{release_path}"
cmd = cmd.join(" && ")
on roles(:app) do
within release_path do
execute cmd
end
end
end
end
after "deploy:updating", "deploy:checkout_subdir"
Unfortunately, git provides no way to do this. Instead, the 'git way' is to have two repositories -- client and server, and clone the one(s) you need.
I created a snipped that works with Capistrano 3.x based in previous anwers and other information found in github:
# Usage:
# 1. Drop this file into lib/capistrano/remote_cache_with_project_root_strategy.rb
# 2. Add the following to your Capfile:
# require 'capistrano/git'
# require './lib/capistrano/remote_cache_with_project_root_strategy'
# 3. Add the following to your config/deploy.rb
# set :git_strategy, RemoteCacheWithProjectRootStrategy
# set :project_root, 'subdir/path'
# Define a new SCM strategy, so we can deploy only a subdirectory of our repo.
module RemoteCacheWithProjectRootStrategy
include Capistrano::Git::DefaultStrategy
def test
test! " [ -f #{repo_path}/HEAD ] "
end
def check
test! :git, :'ls-remote -h', repo_url
end
def clone
git :clone, '--mirror', repo_url, repo_path
end
def update
git :remote, :update
end
def release
git :archive, fetch(:branch), fetch(:project_root), '| tar -x -C', release_path, "--strip=#{fetch(:project_root).count('/')+1}"
end
end
It's also available as a Gist on Github.
dont know if anyone is still interested on this. but just letting you guys if anyone is looking for an answer.
now we can use: :repo_tree
https://capistranorb.com/documentation/getting-started/configuration/
Looks like it's also not working with codebasehq.com so I ended up making capistrano tasks that cleans the mess :-) Maybe there's actually a less hacky way of doing this by overriding some capistrano tasks...
This has been working for me for a few hours.
# Capistrano assumes that the repository root is Rails.root
namespace :uploads do
# We have the Rails application in a subdirectory rails_app
# Capistrano doesn't provide an elegant way to deal with that
# for the git case. (For subversion it is straightforward.)
task :mv_rails_app_dir, :roles => :app do
run "mv #{release_path}/rails_app/* #{release_path}/ "
end
end
before 'deploy:finalize_update', 'uploads:mv_rails_app_dir'
You might declare a variable for the directory (here rails_app).
Let's see how robust it is. Using "before" is pretty weak.

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