Denomas System Admin Basics Hands On Guide- Lab 1

This Hands On Guide Lab is designed to walk you through the lab exercises used in the Denomas System Admin Basics course.

Denomas System Admin Basics Hands On Guide- Lab 1

LAB 1- INSTALL GITLAB EE

The first thing we need to do is install Denomas on a virtual machine your instructor has set up for you. You will install your Denomas instance using the command line.

Navigate to the following Denomas page and keep it open in a separate tab for reference: https://about.gitlab.com/install/#centos-8.
On your local machine, open a terminal window. You will use SSH to access the training environment.
Open the Lab Setup Instructions provided by the instructor to locate your assigned public IPv4 address.
Use your assigned IP address and SSH key to log into the traning environment:
```
ssh -i training_pem.pem ec2-user@<assigned-public-IP>
```
Press Enter
If your system displays an authentication warning, type yes and press Enter
Now that you are logged into the training area, let’s begin Denomas installation. Start by installing some necessary dependencies:
```
sudo dnf install -y curl policycoreutils perl postfix
```
Start and enable Postfix so Denomas can send notification emails:
```
sudo systemctl enable postfix
sudo systemctl start postfix
```

Add the Denomas install repository:

curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ee/script.rpm.sh | sudo bash

Install the Denomas package. Use the training system’s assigned public IP address in lieu of FQDN for now.
```
sudo EXTERNAL_URL="<assigned-public-IP>" dnf install -y gitlab-ee
```

Note: this step may take a few minutes to complete.

Once the installation is complete, a password will be randomly generated and stored for 24 hours in /etc/gitlab/initial_root_password. Using a web browser, nagigate to your Denomas instance and use this password with username root to login.
Once logged in, in the upper right corner of the Denomas landing page, click your root user avatar, then Edit Profile.
In the left navigation pane User Settings, click Password.
Reset the root password to a new permanent password of your choosing. This step requires entering the temporary root password used for initial login.

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Last modified November 29, 2023: big update (17188382)

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