**STEP 1**
-Update the system
sudo yum update


**STEP 2**
- Install Dependencies and Database
Add EPEL repository:
sudo dnf install epel-release -y
 

**STEP 3**
Install development tools and required packages:
sudo dnf groupinstall "Development Tools" -y


**STEP 4**
Install ImageMagick:
sudo dnf install curl git ImageMagick ImageMagick-devel -y


**STEP 5**
---------------------------------
Install MariaDB:
sudo dnf install mariadb mariadb-server

**STEP 6**
After installing MariaDB, start the database server and enable it to start automatically on system boot:
sudo systemctl start mariadb
sudo systemctl enable mariadb

**STEP**
Secure the MariaDB installation:
sudo mysql_secure_installation

**STEP 7**
Create a Database and User for Redmine
sudo mysql -u root -p

# Run the following commands in the MariaDB shell
CREATE DATABASE redmine CHARACTER SET utf8mb4;
CREATE USER 'redmine'@'localhost' IDENTIFIED BY 'your_password';
GRANT ALL PRIVILEGES ON redmine.* TO 'redmine'@'localhost';
FLUSH PRIVILEGES;
EXIT;
------------------------------------------


**STEP 8**
Create a new user and group, with home directory /opt/redmine that will run the Redmine instance:
sudo useradd -m -U -r -d /opt/redmine redmine


**STEP 9**
Install Apache web server by running the following command:
sudo dnf install httpd

Start Apache web server by running the following command:
sudo systemctl start httpd

Enable Apache to start automatically on boot by running the following command:
sudo systemctl enable httpd

To verify that Apache is running, you can run the following command:
sudo systemctl status httpd


**STEP 10**
Add the apache user to the redmine group and change the /opt/redmine directory permissions so that the Apache can access it:
sudo usermod -a -G redmine apache
sudo chmod 750 /opt/redmine


**STEP 11**
Switch to Redmine user:
sudo su - redmine

**STEP 12**
Install RVM: (https://help.dreamhost.com/hc/en-us/articles/217185247-Ruby-Version-Manager-RVM-)

Install RVM's public keys:
gpg --keyserver keyserver.ubuntu.com --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB

Install the latest stable version of RVM:
curl -sSL https://get.rvm.io | bash -s

Run this to unset your GEM_HOME:
unset GEM_HOME

Run this to source your new RVM install:
source ~/.rvm/scripts/rvm

Run the following to disable autolibs:
rvm autolibs disable

Check if RVM is installed and functioning:
rvm --version


**STEP 13**
Install Ruby
Install the exact version of Ruby you require. This example installs version 3.0.1:
rvm install 3.1.0

You can now tell your system to use this version by default:
rvm use 3.1.0 --default

Check the version of Ruby to confirm it's been updated.
ruby -v


**STEP 14**
Install Rails:

Install a specific version:
gem install rails --version 6.1.0


**STEP 15**
Install Redmine 5
curl -L http://www.redmine.org/releases/redmine-5.0.1.tar.gz -o redmine.tar.gz
tar -xvf redmine.tar.gz
mv redmine-5.0.1/ redmine/
rm redmine.tar.gz


**STEP 16**
cp /opt/redmine/redmine/config/database.yml.example /opt/redmine/redmine/config/database.yml
nano /opt/redmine/redmine/config/database.yml

Update:

production:
  adapter: mysql2
  database: redmine
  host: localhost
  username: redmine
  password: “<redmine db user password>”
  encoding: utf8mb4
  

**STEP 17** 
6.	Install Ruby Dependencies
cd ~/redmine
WARNING^^
gem install bundler

sudo bundle install --without development test
*WARNING ERROR: An error occurred while installing mysql2 (0.5.5), and Bundler cannot continue.*


bundle exec rake generate_secret_token
RAILS_ENV=production bundle exec rake db:migrate


**STEP 18**
Apache Configuration:
sudo nano /etc/httpd/conf.d/redmine.conf


<VirtualHost *:80>
    ServerName example.com _(IP address)_
    ServerAlias www.example.com _(IP address)_
    DocumentRoot /opt/redmine/redmine/public

    <Directory /opt/redmine/redmine-4.1.0/public>
        Options Indexes ExecCGI FollowSymLinks
        Require all granted
        AllowOverride all
    </Directory>

    ErrorLog /var/log/httpd/example.com-error.log
    CustomLog /var/log/httpd/example.com-access.log combined
</VirtualHost>


**STEP 19**
Restart Apache:
$ sudo systemctl restart httpd