Common setup for all HPC nodes

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1. Install Ubuntu 22.04

Install Ubuntu 22.04 Server on all nodes with most default values.

Create a non-root user (e.g., admin) during setup.

2. Login Using the Admin User

Login to each node using the admin user.

3. Configure History Retention

Enable storing date and time along with each command in history, as explained in the guide:

Storing date / time along with commands in history

4. Install Essential Packages

 sudo su - apt update apt -y install openssh-server vim htop stress 

5. Set Root Password

 passwd 

6. Enable Root SSH Access

Edit the SSH configuration file:

 vim /etc/ssh/sshd_config 

Locate and change the following line:

 PermitRootLogin yes 

7. Restart SSH Service

 systemctl restart sshd 

8. Install Environment Modules

 apt install -y environment-modules 

9. Re-login for Modules to Work

After installation, logout and login again into each node to ensure module command works.

10. Configure Module Path

Edit the module path configuration file:

 vim /etc/environment-modules/modulespath 

Add the following line:

 /export/modules 

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