deploy with capistrano

0-ubuntu-server.markdown

准备工作

byobu 基于screen或tmux的终端工作

sudo apt-get install byobu curl

在终端启动

byobu  # F6 可以让进程在后台运行`

安装 rvm

curl -L https://get.rvm.io | sudo bash -s stable
source /etc/profile.d/rvm.sh

添加rails用户

sudo useradd -m -G  rvm rails

将rails用户加到sudo用户组(可选)

sudo gpasswd -a rails sudo

更改密码

passwd rails

安装依赖

sudo apt-get install -y build-essential openssl curl libcurl3-dev libreadline6 libreadline6-dev git zlib1g zlib1g-dev libssl-dev libyaml-dev libxml2-dev libxslt-dev autoconf automake libtool imagemagick libmagickwand-dev libpcre3-dev libsqlite3-dev

也可以执行，会列出需要的包

rvm requirements 

example

sudo apt-get install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion

安装curl openssl 库

sudo apt-get install libcurl4-openssl-dev libopenssl-ruby libssl-dev

在rails这个用户下执行操作-安装ruby

rvmsudo rvm install ruby

源代码安装

rvmsudo rvm install 1.9.3 --disable-binary

设置ruby版本

rvm use --default 1.9.3

安装Nginx + Passenger

gem install passenger

执行 passenger nginx 模块的安装脚本

rvmsudo passenger-install-nginx-module

添加一个 nginx 的启动脚本

cd /etc/init.d
sudo wget https://raw.github.com/chloerei/nginx-init-ubuntu-passenger/master/nginx
sudo update-rc.d nginx defaults
sudo chmod +x nginx
sudo service nginx start

1-Gemfile

# Deploy with Capistrano
gem 'capistrano'
# 这个gem可以设置多个部署环境
gem 'capistrano-ext'
# 添加rvm的一些支持
gem 'rvm-capistrano'

2-Capfile.rb

load 'deploy'
# Uncomment if you are using Rails' asset pipeline
load 'deploy/assets'
load 'config/deploy' # remove this line to skip loading any of the default tasks

3-deploy.rb

#config/deploy.rb

require 'bundler/capistrano'

set :use_sudo, false
set :rvm_type, :system
require "rvm/capistrano" # Load RVM's capistrano plugin.

set :stages, %w(staging production)
set :default_stage, "staging"
require 'capistrano/ext/multistage'

set :application, "ziya-news"

# ssh to the deploy server
default_run_options[:pty] = true

# setup scm:
set :repository,  "git@bitbucket.org:larryzhao/ziya-news.git"
set :deploy_via, :remote_cache
set :scm_username, "larry"
set :scm, :git
set :scm_verbose, "true"
ssh_options[:forward_agent] = true

# set path
set(:releases_path)     { File.join(deploy_to, version_dir) }
set(:shared_path)       { File.join(deploy_to, shared_dir) }
set(:current_path)      { File.join(deploy_to, current_dir) }
set(:release_path)      { File.join(releases_path, release_name) }


# set gems
set :bundle_without, [:development,:test]

namespace :rvm do
  task :trust_rvmrc do
    run "rvm rvmrc trust #{current_release}"
  end
end

namespace :deploy do
  task :start do ; end
  task :stop do ; end
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "#{try_sudo} touch #{File.join(current_path,'tmp','restart.txt')}"
  end

  task :db_create do 
  	run "cd #{release_path}; bundle exec rake db:create RAILS_ENV=#{rails_env}"
  end 
end

4-staging.rb

#config/deploy/staging.rb

server "chicago.baijii.com", :app, :web, :db, :primary => true

set :use_sudo, false
set :branch, "master"
set :rails_env, "production"
set :rvm_ruby_string, 'ruby-1.9.2-p320@ziya-news'
set :deploy_to, "/opt/app/deploy/#{application}"

after "bundle:install", "deploy:db_create"
after "deploy:db_create", "deploy:migrate"
after "deploy:create_symlink", "deploy:cleanup"

5-production.rb

#config/deploy/production.rb
server "chicago.baijii.com", :app, :web, :db, :primary => true

set :use_sudo, false
set :branch, "master"
set :rails_env, "staging"
set :rvm_ruby_string, 'ruby-1.9.2-p320@ziya-news'
set :deploy_to, "/opt/app/deploy/#{application}"

after "bundle:install", "deploy:db_create"
after "deploy:db_create", "deploy:migrate"
after "deploy:create_symlink", "deploy:cleanup"

6-rabel-special.sh

## Can't install RMagick 2.13.1. Can't find Magick-config

sudo apt-get install libmagickwand-dev

7-nginx.sh

## nginx.conf
#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    passenger_root /usr/local/rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.17;
    passenger_ruby /usr/local/rvm/wrappers/ruby-1.9.3-p194/ruby;

    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       80 default_server;
        server_name  vps.sdutlinux.org;
        root /home/rails/sdutlinux/current/public;
        passenger_enabled on;
        rails_env production;
        
        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        #location / {
        #    root   html;
        #    index  index.html index.htm;
        #}

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }

    include /opt/nginx/conf/sites/*;

    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443;
    #    server_name  localhost;

    #    ssl                  on;
    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_timeout  5m;

    #    ssl_protocols  SSLv2 SSLv3 TLSv1;
    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers   on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
}

## sdutlinux.org example 
server {
        client_max_body_size 20M;

        listen       80;
        server_name  sdutlinux.org;
        root /home/rails/sdutlinux/current/public;
        rails_env production;
        passenger_enabled on;

        #access_log  logs/host.access.log  main;

        location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
            gzip_static on;
            expires 1y;
            add_header    Cache-Control  public;
                #root   html;
            #index  index.html index.htm;
        }

        #location / {
        #    root   html;
        #    index  index.html index.htm;
        #}

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
}