Install Ruby On Rails into Ubuntu Linux Server

Install Ruby On Rails into Ubuntu Linux Server

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apt update -y && apt-get upgrade -y 
apt update -y
apt install ubuntu-restricted-extras
apt install apt-show-versions
apt-show-versions | grep upgradeable
add-apt-repository ppa:git
apt install git
git config --global user.name "mukul"
ssh-keygen -t rsa -b 4096 -C "cloudybdone@gmail.com"
cat /root/.ssh/id_rsa.pub
apt upgrade -y && apt update
nano /etc/ssh/sshd_config
PermitRootLogin yes
PasswordAuthentication yes
apt upgrade -y && apt update
apt -f install && apt autoremove 
apt upgrade -y && apt update
reboot

Install RVM Ruby Version Manager>>

Import GPG keys of the RVM using the gpg command:

gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3..

Download the RVM installer script and install the RVM:

curl -sSL https://get.rvm.io | bash -s...

load the RVM to the system:
source /usr/local/rvm/...

update the RVM to the latest stable version and add the root user to the rvm group:
rvm get stable --aut...
usermod -a -G rvm root

rvm version

Install and Configure Ruby>>

Install Ruby 2.7.1 using the rvm command:
install ruby-2.7.1

make the Ruby 2.7.1 as the default Ruby version on your system:
rvm -default use ruby..

ruby --version

Install Nodejs and Yarn>>

install some packages dependencies:
sudo apt install gcc...

add the Nodejs Nodesource repository:
curl -sL https://deb.nodesource.com...

add the GPG key and repository of the Yarn package manager:
curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg...
echo "deb https://dl.yarnpkg.com/debian/ stable main"....

update all available repositories on your system and install the Nodejs and Yarn package manager using the apt command:
sudo apt update
sudo apt install nodejs

node --version
yarn --version

Update RubyGem Package Manager>>

gem update --system

create a new configuration for the RubyGem '~/.gemrc' and disable the installation of package documentation:

echo "gem: -no-document" >> ~gemrc
gem -v

Install Ruby on Rails>>

gem install rails
rails --version

Install and Configure PostgreSQL>>
Install the PostgreSQL database server to the Ubuntu 20.04:

sudo apt install postgresql postgresql-contrib...
systemctl start postgresql

log in to the PostgreSQL shell and create a new role 'hakase_dev' with the password 'password' and the privileges 'createdb' and 'login':

sudo -i -u postgres psql
create role hakase_dev with createdb login password 'password';

ist all available of users on the PostgreSQL using the following query:
\du

Start New Ruby on Rails Project with PostgreSQL Database:

rails new hakaseapp postgresql

cd hakaseapp/
nano config/database.yml

On the development section, add the database configuration as below:
  host: localhost
  username: hakase_dev
  password: hakasepass
  
Go to the testing section and add the PostgreSQL database configuration as below:

  host: localhost
  username: hakase_dev
  password: hakasepass
  
 run the rails command below to generate and migrate the database for our Rails project, and make sure there is no error:
 
 rails db:setup

 start the default puma rails web server using the command below:
 
 rails s -b 0.0.0.0 -p 3000