Cara Install Rails dari Awal

install_rails.txt

LINUX USER
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Langkah 1: Install dependency libraries
$ sudo apt-get --no-install-recommends 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 libgdbm-dev ncurses-dev automake libtool bison subversion pkg-config libffi-dev

Langkah 2:
Tambahkan user baru jangan gunakan root untuk production:
useradd -m -d /home/new_user -s /bin/bash -g staff new_user
Kemudian Ikuti langkah diweb berikut untuk membuat ssh-key agar bisa terhubung dengan github
https://help.github.com/articles/generating-ssh-keys

Langkah 3: Install ruby by rbenv
$ curl https://raw.github.com/fesplugas/rbenv-installer/master/bin/rbenv-installer | bash
atau lihat (untuk multi user)
https://github.com/rinrinne/install-shared-rbenv
sudo usermod -a -G staff <some_user>
sudo chgrp -R staff /usr/local/rbenv
sudo chmod -R g+w /usr/local/rbenv

Langkah 4: 
pilih ruby yang ingin di install, untuk melihat daftar ruby yang bisa di install, ketik/jalankan perintah di bawah ini.
$ rbenv install -l

Langkah 5:
misalkan kita akan menginstall ruby versi 1.9.3-p392 maka perintah yang di jalankan adalah 
$ rbenv install 1.9.3-p392

Langkah 6: 
setelah proses selesai. Atur ruby untuk dipakai secara global dengan menjalan perintah.
$ rbenv global 1.9.3-p392

Langkah 7:
$ gem install bundler
$ gem install rails -v=3.2.12

WINDOWS USER
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railsinstaller.org

MAC OS
--------------------
Langkah 1:
Download dan install library berikut:
https://github.com/downloads/kennethreitz/osx-gcc-installer/GCC-10.7-v2.pkg

Langkah 2:
Install Homebrew:
https://github.com/mxcl/homebrew/wiki/installation

Langkah 3:
Install Git
$ brew install git

Langkah 4:
Ikutit langkah ke-3 sampai 7 dari Linux User diatas


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INSTALL MYSQL
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apt-get install mysql-client mysql-sever

if you are not asked for entering root password, please change root password by following steps:

sudo /etc/init.d/mysql stop
sudo mysqld --skip-grant-tables &
mysql -u root mysql
UPDATE user SET Password=PASSWORD('YOURNEWPASSWORD') WHERE User='root'; FLUSH PRIVILEGES; exit;
/etc/init.d/mysql stop
/etc/init.d/mysql start

Then add new user:
mysql -u root -p
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON * . * TO 'newuser'@'localhost';
FLUSH PRIVILEGES;
exit

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INSTALL NGINX
-------------------
https://github.com/pagespeed/ngx_pagespeed


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UNINSTALL APACHE
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sudo service apache2 stop
sudo apt-get purge apache2 apache2-utils apache2.2-bin apache2-common
sudo apt-get autoremove
whereis apache2
sudo rm -rf /etc/apache2