Nginx + unicorn 运行多个Rails应用程序

PS：第一次写的很详细，可惜发布失败，然后全没了，这是第二次，表示只贴代码，剩下的自己领悟好了，这就是所谓的一鼓作气再而衰吧，希望没有第三次。

版本：

　　ruby 2.1.0

　　rails 4.0.2

　　nginx 1.5.8 mainline version

　　unicorn 4.7.0

/usr/local/nginx/conf/nginx.conf

 user NginxUser NginxGroup;

 worker_processes  ;

 events {

     worker_connections  ;

 }

 http {

     include       mime.types;

     include       /usr/local/nginx/conf/conf.d/*.conf;

     default_type  application/octet-stream;

     sendfile        on;

     #tcp_nopush     on;

     keepalive_timeout  65;

     gzip  on;

 }

/usr/local/nginx/conf/conf.d/guorj.conf

 upstream guorj_rails_unicorn_server {

   server unix:/tmp/guorj_unicorn.sock fail_timeout=;

   #server 127.0.0.1: fail_timeout=;

 }

 server {

   listen ;

   client_max_body_size 4G;

   server_name          guorj.com;

   keepalive_timeout    ;

   root                 /home/NginxUser/www/guorj/public;

   access_log           /home/NginxUser/www/guorj/log/nginx_access.log;

   error_log            /home/NginxUser/www/guorj/log/nginx_error.log;

   rewrite_log          on;

   index                index.html;

   location / {

     proxy_set_header Host $host;

     proxy_set_header X-Forwarded-Host $host;

     proxy_set_header X-Real-IP $remote_addr;

     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

     proxy_buffering  on;

     proxy_redirect   off;

     proxy_pass       http://guorj_rails_unicorn_server;

   }

   #Rails error pages

   location =/.html {

     root /home/NginxUser/www/guorj/public;

   }

 }

/home/NginxUser/www/guorj/config/unicorn.rb

 # Sample verbose configuration file for Unicorn (not Rack)

 #

 # This configuration file documents many features of Unicorn

 # that may not be needed for some applications. See

 # http://unicorn.bogomips.org/examples/unicorn.conf.minimal.rb

 # for a much simpler configuration file.

 #

 # See http://unicorn.bogomips.org/Unicorn/Configurator.html for complete

 # documentation.

 # can't specify rails env

 rails_env = ENV["RAILS_ENV"] || "production"

 # Use at least one worker per core if you're on a dedicated server,

 # more will usually help for _short_ waits on databases/caches.

 worker_processes 4

 # Since Unicorn is never exposed to outside clients, it does not need to

 # run on the standard HTTP port (80), there is no reason to start Unicorn

 # as root unless it's from system init scripts.

 # If running the master process as root and the workers as an unprivileged

 # user, do this to switch euid/egid in the workers (also chowns logs):

 # user "unprivileged_user", "unprivileged_group"

 # Help ensure your application will always spawn in the symlinked

 # "current" directory that Capistrano sets up.

 app_root = File.expand_path('.')

 working_directory app_root #"/path/to/app/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 "/path/to/.unicorn.sock", :backlog => 64

 #listen "#{app_root}/tmp/sockets/unicorn.sock", :backlog => 64

 listen "/tmp/guorj_unicorn.sock", :backlog => 64

 listen 8081, :tcp_nopush => false # true

 # nuke workers after 30 seconds instead of 60 seconds (the default)

 timeout 120 #

 # feel free to point this anywhere accessible on the filesystem

 #pid "/path/to/app/shared/pids/unicorn.pid"

 #pid "#{app_root}/tmp/pids/unicorn.pid"

 pid "/tmp/guorj_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 "/path/to/app/shared/log/unicorn.stderr.log"

 #stdout_path "/path/to/app/shared/log/unicorn.stdout.log"

 stderr_path "#{app_root}/log/unicorn.stderr.log"

 stdout_path "#{app_root}/log/unicorn.stdout.log"

 # combine Ruby 2.0.0dev or REE with "preload_app true" for memory savings

 # http://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 recomended 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

然后运行unicorn

unicorn_rails -c /home/NginxUser/www/guorj/config/unicorn.rb -E production -D

添加第二个rails项目（请自行和第一个项目的配置对比不同，被网速把激情磨灭了）

/usr/local/nginx/conf/conf.d/wguorj.conf

 upstream wguorj_rails_unicorn_server {

   server unix:/tmp/wguorj_unicorn.sock fail_timeout=;

   #server 127.0.0.1: fail_timeout=;

 }

 server {

   listen ;

   client_max_body_size 4G;

   server_name          www.guorj.com;

   keepalive_timeout    ;

   root                 /home/NginxUser/www/wguorj/public;

   access_log           /home/NginxUser/www/wguorj/log/nginx_access.log;

   error_log            /home/NginxUser/www/wguorj/log/nginx_error.log;

   rewrite_log          on;

   index                index.html;

   location / {

     proxy_set_header Host $host;

     proxy_set_header X-Forwarded-Host $host;

     proxy_set_header X-Real-IP $remote_addr;

     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

     proxy_buffering  on;

     proxy_redirect   off;

     proxy_pass       http://wguorj_rails_unicorn_server;

   }

   #Rails error pages

   location =/.html {

     root /home/NginxUser/www/wguorj/public;

   }

 }

/home/NginxUser/www/wguorj/config/unicorn.rb

 # Sample verbose configuration file for Unicorn (not Rack)

 #

 # This configuration file documents many features of Unicorn

 # that may not be needed for some applications. See

 # http://unicorn.bogomips.org/examples/unicorn.conf.minimal.rb

 # for a much simpler configuration file.

 #

 # See http://unicorn.bogomips.org/Unicorn/Configurator.html for complete

 # documentation.

 # can't specify rails env

 rails_env = ENV["RAILS_ENV"] || "production"

 # Use at least one worker per core if you're on a dedicated server,

 # more will usually help for _short_ waits on databases/caches.

 worker_processes 4

 # Since Unicorn is never exposed to outside clients, it does not need to

 # run on the standard HTTP port (80), there is no reason to start Unicorn

 # as root unless it's from system init scripts.

 # If running the master process as root and the workers as an unprivileged

 # user, do this to switch euid/egid in the workers (also chowns logs):

 # user "unprivileged_user", "unprivileged_group"

 # Help ensure your application will always spawn in the symlinked

 # "current" directory that Capistrano sets up.

 app_root = File.expand_path('.')

 working_directory app_root #"/path/to/app/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 "/path/to/.unicorn.sock", :backlog => 64

 #listen "#{app_root}/tmp/sockets/unicorn.sock", :backlog => 64

 listen "/tmp/wguorj_unicorn.sock", :backlog => 64

 listen 8082, :tcp_nopush => false # true

 # nuke workers after 30 seconds instead of 60 seconds (the default)

 timeout 120 #

 # feel free to point this anywhere accessible on the filesystem

 #pid "/path/to/app/shared/pids/unicorn.pid"

 #pid "#{app_root}/tmp/pids/unicorn.pid"

 pid "/tmp/wguorj_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 "/path/to/app/shared/log/unicorn.stderr.log"

 #stdout_path "/path/to/app/shared/log/unicorn.stdout.log"

 stderr_path "#{app_root}/log/unicorn.stderr.log"

 stdout_path "#{app_root}/log/unicorn.stdout.log"

 # combine Ruby 2.0.0dev or REE with "preload_app true" for memory savings

 # http://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 recomended 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

运行第二个rails程序记得重启nginx

unicorn_rails -c /home/NginxUser/www/wguorj/config/unicorn.rb -E production -D

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Nginx + unicorn 运行多个Rails应用程序

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