Installing DevOps Loop on a RHEL system for a demo setup

Disclaimer: In this demo setup, DevOps Loop is deployed on a RHEL-based system with minimum hardware and software specifications. This demo setup is intended solely for evaluation purposes and might not accurately represent the performance, reliability, or feature set of the full production environment. The demo setup might not include enhanced security configurations typical of production systems. No warranty is implied regarding uptime, support, or continuity of access.

You can find information about the tasks that you can perform to install IBM® DevOps Loop on a Red Hat Enterprise Linux (RHEL) system for a demo setup.

You must have completed the following tasks:

Ensured that the RHEL system on which you are deploying DevOps Loop meets the following minimum requirements:
- Operating system: RHEL 9.4 or later
- Disk space: 300 GB
- RAM: 64 GB
- CPU: 16 Core
Downloaded the Installation scripts.
Obtained the user credentials of the licensed Docker account.
Note: If you do not provide the licensed docker account credentials, the system might take approximately 6 hours to become operational.
Set these environment variables in your shell before you run the RHEL9-K8S-Infra-Setup.sh script:
- export USERNAME=<docker_username>
- export PASSWORD=<docker_password>
If the above values are not set, you are prompted with login steps during the script run.

Run the RHEL9-K8S-Infra-Setup.sh script:
```
./RHEL9-K8S-Infra-Setup.sh
```
Run the following command to create a namespace:
```
kubectl create namespace devops-loop
```
Perform the following steps to access the IBM Entitled Registry:
1. Log in to My IBM Container Software Library using the IBM ID and password associated with your entitled software.
2. Copy the entitlement key by selecting Copy key in the Entitlement keys section.
3. Create an imagePullSecret to authenticate and pull images from the IBM Entitled Registry.
  Note: Secrets are namespace-scoped and must be created in each namespace where you plan to install DevOps Loop.
  Use the following command to create an imagePullSecret named ibm-entitlement-key:
```
kubectl create secret docker-registry ibm-entitlement-key \
    --namespace devops-loop \
    --docker-username=cp \
    --docker-password=<password> \
    --docker-server=cp.icr.io
```
  For example:
```
kubectl create secret docker-registry ibm-entitlement-key \
    --namespace devops-loop \
    --docker-username=cp \
    --docker-password=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJJQk0gTWFya2V0cGxhY2UiLCJp \
    --docker-server=cp.icr.io
```

Run the following command to set the Helm chart:

helm repo add ibm-helm https://raw.githubusercontent.com/IBM/charts/master/repo/ibm-helm --force-update

Update the following values in the IBM-devops-Install.sh script:
- LICENSE_SERVER=
- EMAIL_SERVER_HOST=
- EMAIL_SERVER_PORT=
- EMAIL_FROM_ADDRESS=
- EMAIL_SERVER_USERNAME=""
- EMAIL_SERVER_PASSWORD=""
Run the following command to start the installation script:
```
./IBM-devops-install.sh
```
After the successful installation, the following URLs are displayed:
Application URL: https://<system_IP_address>.nip.io
Keycloak URL to add users: https://<system_IP_address>.nip.io/auth

Note: If you are installing DevOps Loop on a computer that is newly set up, then the installation might fail sometimes. If the installation fails, to resolve the issue, you must uninstall the application by running the uninstall.sh script and then reinstall it.
Optional: Run the following command to check whether all the pods are running:
```
kubectl get pods -n devops-loop
```
Open a browser and enter the application URL to get started with DevOps Loop.

You have installed DevOps Loop on a RHEL system for a demo setup.