Some of the issue I have ecountered while deploying the Rails app using Nginx, Passenger & Capistrano

While deploying to my Ruby On Rails application I have encountered some issues. Following are the issues and their solutions :-

Note :- I have a Open Suse Box

# "An error occurred while installing mysql2 (0.3.18), and Bundler cannot continue. Make sure that `gem install mysql2 -v '0.3.18'` succeeds before bundling."

Solution :-

~ # zypper se libmysqlclient
# it will list you all the available packages
# now you have to choose one and install it
~ # zypper in libmysqlclient-devel

# "ExecJS::RuntimeUnavailable: Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes."

Solution :- https://github.com/nodejs/node-v0.x-archive/wiki/Installing-Node.js-via-package-manager?utm_source=%5Bdeliciuos%5D&utm_medium=twitter#opensuse-and-sle

# When I ran cap [your environment] deploy I got the issue like tmp/restart.txt file does not exists. So I made the following changes in my cap file :-

desc 'Restart application'

  task :restart do

    on roles(:app), in: :sequence, wait: 5 do

      system("\\Restarting the app ............")

      # Your restart mechanism here, for example:

      execute :mkdir, '-p', "#{ release_path }/tmp" ## this is new line i have added

      execute :touch, release_path.join('tmp/restart.txt')

    end

  end

# Once you installed the Passenger & Nginx then you need to run the following and follow the insructions.

~ # rvmsudo passenger-install-nginx-module

# After that it was time to edit the nginx configurations. Go to nginx'spath i.e ("/opt/nginx/conf/nginx.conf") which look like this after edit :-

worker_processes  5;

error_log  /var/log/passenger/error.log;

pid /opt/nginx/nginx.pid;



events {

  worker_connections  1024;

}



include conf.d/*.conf;



http {

  passenger_root /usr/local/rvm/gems/ruby-2.2.2/gems/passenger-5.0.20;

  passenger_ruby /usr/local/rvm/gems/ruby-2.2.2/wrappers/ruby;

  passenger_app_env development; ### added new line

  passenger_max_pool_size 6;

  passenger_min_instances 1;

  passenger_pool_idle_time 0;

  passenger_max_instances_per_app 0;

  passenger_friendly_error_pages on;

  passenger_default_user root; ### added new line

  passenger_default_group root; ### added new line



 server {

      listen 80;

      server_name 127.0.0.1;

      root /srv/www/your application path/current/public; ### added new line

      passenger_enabled on; ### added new line

      }



  include mime.types;

  default_type application/octet-stream;



  sendfile on;

  tcp_nopush off;

  keepalive_timeout 65;

  gzip on;



  include sites.d/*.conf;

}

# You also need to change the permission of your app so that passenger will be able to execute the files.

# To check passenger log . . . go to this path "/var/log/passenger/error.log"