What could be the problem with unicorna in production?

Question

Nginx

Hello Habr!
I deployed the application on rails according to the method described on Habré , but the application gives out "We're sorry, but something went wrong."
Found in nginx.error.log :

[crit] 14627#0: *32 connect() to unix:/var/www/application/current/tmp/sockets/.unicorn.sock failed (2: No such file or directory) while connecting to upstream

here's what it gives out with ps aux | grep unicorn

4925  0.0  0.1   4688  2028 pts/0    S+   17:55   0:00 grep --color=auto unicorn

unicron configs

worker_processes 2
working_directory "/var/www/application/current" # available in 0.94.0+
# listen on both a Unix domain socket and a TCP port,
# we use a shorter backlog for quicker failover when busy
listen "/var/www /application/current/tmp/sockets/.unicorn.sock", :backlog => 64
listen 8080, :tcp_nopush => true
# nuke workers after 30 seconds instead of 60 seconds (the default)
timeout 30
# feel free to point this anywhere accessible on the filesystem
pid "/var/www/application/current/tmp/pids/unicorn.pid"
# By default, the Unicorn logger will write to stderr.
# Additionally, ome applications/frameworks log to stderr or stdout,
# so prevent them from going to /dev/null when daemonized here:
stderr_path "/var/www/application/current/log/unicorn.stderr.log"
stdout_path "/var/www/application/current/log/unicorn.stdout .log"
# combine Ruby 2.0.0dev or REE with "preload_app true" for memory savings
# rubyenterpriseedition.com/faq.html#adapt_apps_for_cow
preload_app true
GC.respond_to?(:copy_on_write_friendly=) and
GC.copy_on_write_friendly = true
# Enable this flag to have unicorn test client connections by writing the
# beginning of the HTTP headers before calling the application. This
# prevents calling the application for connections that have disconnected
# while queued. This is only guaranteed to detect clients on the same
# host unicorn runs on, and unlikely to detect disconnects even on a
# fast LAN.
check_client_connection false
before_fork do |server, worker|
# the following is highly recommended for Rails + "preload_app true"
# as there's no need for the master process to hold a connection
defined?(ActiveRecord::Base) and
ActiveRecord::Base.connection.disconnect!
# The following is only recommended for memory/DB-constrained
# installations. It is not needed if your system can house
# twice as many worker_processes as you have configured.
#
# # This allows a new master process to incrementally
# # phase out the old master process with SIGTTOU to avoid a
# # thundering herd (especially in the "preload_app false" case)
# # when doing a transparent upgrade. The last worker spawned
# # will then kill off the old master process with a SIGQUIT.
old_pid = "#{server.config[:pid]}.oldbin"
if old_pid != server.pid
begin
sig = (worker.nr + 1) >= server.worker_processes ? :QUIT : :TTOU
Process.kill(sig, File.read(old_pid).to_i)
rescue Errno::ENOENT, Errno::ESRCH
end
end
#
# Throttle the master from forking too quickly by sleeping. Due
# to the implementation of standard Unix signal handlers, this
# helps (but does not completely) prevent identical, repeated signals
# from being lost when the receiving process is busy.
# sleep 1
end
after_fork do |server, worker|
# per-process listener ports for debugging/admin/migrations
# addr = "127.0.0.1:#{9293 + worker.nr}"
# server.listen(addr, :tries => -1, :delay => 5, : tcp_nopush => true)
# the following is *required* for Rails + "preload_app true",
defined?(ActiveRecord::Base) and
ActiveRecord::Base.establish_connection
# if preload_app is true, then you may also want to check and
# restart any other shared sockets/descriptors such as Memcached,
# and Redis. TokyoCabinet file handles are safe to reuse
# between any number of forked children (assuming your kernel
# correctly implements pread()/pwrite() system calls)
end

nginx configs

user nginx web;
pid /var/www/run/nginx.pid;
error_log /var/www/log/nginx.error.log;
events {
worker_connections 1024; # increase if you have lots of clients
accept_mutex off; # "on" if nginx worker_processes > 1
use epoll; # enable for Linux 2.6+
# use kqueue; # enable for FreeBSD, OSX
}
http {
# nginx will find this file in the config directory set at nginx build time
include mime.types;
types_hash_max_size 2048;
server_names_hash_bucket_size 64;
# fallback in case we can't determine a type
default_type application/octet-stream;
# click tracking!
access_log /var/www/log/nginx.access.log combined;
# you generally want to serve static files with nginx since neither
# Unicorn nor Rainbows! is optimized for it at the moment
sendfile on;
tcp_nopush on; # off may be better for *some* Comet/long-poll stuff
tcp_nodelay off; # on may be better for some Comet/long-poll stuff
# we haven't checked to see if Rack::Deflate on the app server is
# faster or not than doing compression via nginx. It's easier
# to configure it all in one place here for static files and also
# to disable gzip for clients who don't get gzip/deflate right.
# There are other gzip settings that may be needed used to deal with
# bad clients out there, see wiki.nginx.org/NginxHttpGzipModule
gzip on;
gzip_http_version 1.0;
gzip_proxied any;
gzip_min_length 0;
gzip_variable on;
gzip_disable "MSIE [1-6]\.";
gzip_proxied expired no-cache no-store private auth;
gzip_comp_level 9;
gzip_types text/plain text/xml text/css
text/comma-separated-values
​​text/javascript application/x-javascript
application/atom+xml;
# this can be any application server, not just Unicorn/Rainbows!
upstream app_server {
server unix:/var/www/application/current/tmp/sockets/.unicorn.sock fail_timeout=0;
}
server {
# PageSpeed
​​pagespeed on;
pagespeed FileCachePath /var/ngx_pagespeed_cache;
location ~ "\.pagespeed\.([az]\.)?[az]{2}\.[^.]{10}\.[^.]+" {
add_header "" "";
}
location ~ "^/ngx_pagespeed_static/" { }
location ~ "^/ngx_pagespeed_beacon$" { }
location /ngx_pagespeed_statistics {
allow 127.0.0.1; allow 5.228.169.73; deny all;
}
location /ngx_pagespeed_global_statistics {
allow 127.0.0.1; allow 5.228.169.73; deny all;
}
pagespeed MessageBufferSize 100000;
location /ngx_pagespeed_message {
allow 127.0.0.1; allow 5.228. 169.73; deny all;
}
location /pagespeed_console {
allow 127.0.0.1; allow 5.228.169.73; deny all;
}
charset utf-8;
# enable one of the following if you're on Linux or FreeBSD
listen 80 default deferred; # for Linux
# listen 80 default accept_filter=httpready; # for FreeBSD
# If you have IPv6, you'll likely want to have two separate listeners.
# One on IPv4 only (the default), and another on IPv6 only instead
# of a single dual-stack listener. A dual-stack listener will make
# for ugly IPv4 addresses in $remote_addr (eg ":ffff:10.0.0.1"
# instead of just "10.0.0.1") and potentially trigger bugs in
# some software.
# listen [::]:80 ipv6only=on; # deferred or accept_filter recommended
client_max_body_size 4G;
server_name_;
# ~2 seconds is often enough for most folks to parse HTML/CSS and
# retrieve needed images/icons/frames, connections are cheap in
# nginx so increasing this is generally safe...
keepalive_timeout 5;
# path for static files
root /var/www/application/current/public;
# Prefer to serve static files directly from nginx to avoid unnecessary
# data copies from the application server.
#
# try_files directive appeared in in nginx 0.7.27 and has stabilized
# over time. Older versions of nginx (eg 0.6.x) requires
# "if (!-f $request_filename)" which was less efficient:
# bogomips.org/unicorn.git/tree/examples/nginx.conf?...
try_files $uri /index.html $uri.html $uri @app;
location ~ ^/(assets)/ {
root /var/www/application/current/public;
expires max;
add_header Cache-Control public;
}
location @app {
# an HTTP header important enough to have its own Wikipedia entry:
# en.wikipedia.org/wiki/X-Forwarded-For
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
# enable this if you forward HTTPS traffic to unicorn,
# this helps Rack set the proper URL scheme for doing redirects:
# proxy_set_header X-Forwarded-Proto $scheme;
# pass the Host: header from the client right along so redirects
# can be set properly within the Rack application
proxy_set_header Host $http_host;
# we don't want nginx trying to do something clever with
# redirects, we set the Host: header above already.
proxy_redirect off;
# set "proxy_buffering off" *only* for Rainbows! when doing
# Comet/long-poll/streaming. It's also safe to set if you're using
# only serving fast clients with Unicorn + nginx, but not slow
# clients. You normally want nginx to buffer responses to slow
# clients, even with Rails 3.1 streaming because otherwise a slow
# client can become a bottleneck of Unicorn.
#
# The Rack application may also set "X-Accel-Buffering (yes|no)"
# in the response headers do disable/enable buffering on a
# per-response basis.
# proxy_buffering off;
proxy_pass http://app_server;
}
# Rails error pages
error_page 500 502 503 504 /500.html;
location = /500.html {
root /var/www/application/current/public;
}
}
}

Answer 1

No such file or directory
ps showed that unicorn is not running

Answer 2

And how should it change? It seems to be critical for the structure.

Answer 3

On flexbox, this is easy to do, you just need to decide which blocks and where should be shifted when the window is resized. good tutorial on flex