64ビットのCentOS 6.3でnginx+unicornを利用してruby on rails本番環境を構築する
1.システム要件：
OS: CentOS 6.3 64ビット
サーバー1:172.16.9.40 Nginxをインストール済み
サーバー2:172.16.9.41 unicornをインストール、rubyおよびrailsをインストール済み、RoRアプリケーションサーバとして使う
サーバー3:172.16.9.42 同上
2.unicornをインストール
2.1 gemでインストール
「172.16.9.41」で「 gem install unicorn 」を実行してunicornをインストール
2.2 production環境を設定
vim /var/www/demo_project_unicorn.rb
コード下記：
# 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.
working_directory “/var/www/demo_project" # available in 0.94.0+ プロジェクトのディレクトリ
# listen on both a Unix domain socket and a TCP port,
# we use a shorter backlog for quicker failover when busy
listen “/var/tmp/.unicorn.sock", :backlog => 64
listen 19527, :tcp_nopush => true #nginxはこのポート番号を使用
# nuke workers after 30 seconds instead of 60 seconds (the default)
timeout 120
# feel free to point this anywhere accessible on the filesystem
pid “/usr/tmp/demo_project/pids/unicorn.pid" #pidファイルの場所
# 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 “/usr/tmp/demo_project/log/unicorn.stderr.log" #エラーログの場所
stdout_path “/usr/tmp/demo_project/log/unicorn.stdout.log" #出力ログの場所
# 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
2.3 shellファイルを作成
vim /var/www/unicorn.sh
UNICORN=/usr/local/ruby/bin/unicorn_rails //unicornのインストール先
killall -9 unicorn_rails //unicorn_railsのプロセスを閉じる
$UNICORN -c /var/www/demo_project_unicorn.rb -D -E production //production環境にプロジェクトを起動
2.4. 172.16.9.42でunicornのインストール、設定をする 手順は2.1～2.3と同じ
3.172.16.9.40でnginx設定を修正
vim /usr/local/nginx/conf/nginx.conf
upstream demo_project_backend {
#2台ROR unicornサーバーを接続する
server 172.16.9.41:19527;
server 172.16.9.42:19527;
}
server {
listen 80 default_server;
server_name _;
return 403;
}
server {
listen 80;
server_name www.demo_arkgame.com demo_arkgame.com;
#access_log logs/host.access.log main;
proxy_connect_timeout 500s;
proxy_read_timeout 500s;
proxy_send_timeout 500s;
#リクエストをサーバーにリダイレクト
location / {
root html;
index index.html index.htm;
proxy_pass http://demo_startnews24_backend;
}
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}