nginx and unicorn not working - nginx

Question

I set nginx and unicorn on ubuntu14.04 to access my rails app!
but, I access my domain, chrome responsed 'connection refused'
I don't know why...
How can I resolve this problem?
There is my nginx.conf and unicorn file.
【nginx.conf】
events {
worker_connections 768;
# multi_accept on;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
# server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
# gzip_vary on;
# gzip_proxied any;
# gzip_comp_level 6;
# gzip_buffers 16 8k;
# gzip_http_version 1.1;
# gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
##
# nginx-naxsi config
##
# Uncomment it if you installed nginx-naxsi
##
#include /etc/nginx/naxsi_core.rules;
##
# nginx-passenger config
##
# Uncomment it if you installed nginx-passenger
##
#passenger_root /usr;
#passenger_ruby /usr/bin/ruby;
##
# Virtual Host Configs
##
#include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}
【myapp-unicorn】（/etc/nginx/site-enabled/myapp-unicorn）
upstream myapp.com {
#my rails app
server unix:/var/www/rails/myapp/tmp/sockets/unicorn.sock fail_timeout=0;
}
server {
listen 80;
server_name myapp.com;
location / {
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size 35M;
proxy_pass http://myapp.com;
}
}
【unicorn.rb】（/var/www/rails/myapp/config/unicorn.rb）
worker_processes 2
listen File.expand_path('tmp/sockets/unicorn.sock', ENV['RAILS_ROOT'])
stderr_path File.expand_path('log/unicorn.log', ENV['RAILS_ROOT'])
stdout_path File.expand_path('log/unicorn.log', ENV['RAILS_ROOT'])
preload_app true
before_fork do |server, worker|
defined?(ActiveRecord::Base) and ActiveRecord::Base.connection.disconnect!
old_pid = "#{ server.config[:pid] }.oldbin"
unless old_pid == server.pid
begin
Process.kill :QUIT, File.read(old_pid).to_i
rescue Errno::ENOENT, Errno::ESRCH
end
end
end
after_fork do |server, worker|
defined?(ActiveRecord::Base) and ActiveRecord::Base.establish_connection
end
Thank you for your patience with my poor English.
Add
this is unicorn.log（/var/www/rails/myapp/log/unicorn.log）
I, [2015-09-05T18:17:20.590239 #10832] INFO -- : Refreshing Gem list
I, [2015-09-05T18:17:22.099133 #10832] INFO -- : unlinking existing socket=/var/www/rails/myapp/tmp/sockets/unicorn.sock
I, [2015-09-05T18:17:22.099389 #10832] INFO -- : listening on addr=/var/www/rails/myapp/tmp/sockets/unicorn.sock fd=11
I, [2015-09-05T18:17:22.115503 #10832] INFO -- : master process ready
I, [2015-09-05T18:17:22.118878 #10836] INFO -- : worker=0 ready
I, [2015-09-05T18:17:22.127008 #10839] INFO -- : worker=1 ready
this is nginx.log（/var/log/nginx/error.log）
The nginx log is none...

Answer 1

If your error is
connect() failed (111: Connection refused) while connecting to upstream
Try running unicorn listen on
listen /tmp/sockets/unicorn.sock
instead of
listen File.expand_path('tmp/sockets/unicorn.sock', ENV['RAILS_ROOT'])
because some times it happens that nginx can't read that socket file due to permissions. It is rather safe if you have socket file inside tmp folder. Also point you NGINX to
server unix:/tmp/sockets/unicorn.sock fail_timeout=0;
instead of
server unix:/var/www/rails/myapp/tmp/sockets/unicorn.sock fail_timeout=0;
Please reply if you still get error
Happy Deployment ;)