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## Architecture ## Architecture
Quick explanation on how it works (currently just my quick brain dump because more people is visiting the repo): ### Quick explanation
- Enter the tools container, which contains all the neccessary tools (see building instruction bellow) - Enter the tools container, which contains all the neccessary tools (see building instruction bellow)
- Run `make` - Run `make`
- Ansible will render the configuration file for each bare metal machine (like IP, hostname...) - Ansible will render the [configuration file for each bare metal machine (like IP, hostname...) and the PXE server from templates](./metal/roles/pxe-boot/templates)
- The tools container will create sibling containers to build a PXE server (includes DHCP, TFTP and HTTP server) - The tools container will create sibling containers to build a PXE server (includes DHCP, TFTP and HTTP server)
- Ansible will wake the machines up using Wake on LAN - Ansible will [wake the machines up](./metal/roles/pxe-boot/tasks/wake.yml) using Wake on LAN
- The machine start the boot process: - The machine start the boot process:
- BIOS boot in network mode and look for DHCP server - BIOS boot in network mode and look for DHCP server
- DHCP server point it to the TFTP server to get boot files and boot config - DHCP server point it to the TFTP server to get boot files and boot config
- The boot config contains parameter to get automated OS installation config file (for example kickstart on CentOS or Fedora) - The boot config contains parameter to get [automated OS installation config file](./master/metal/roles/pxe-boot/templates/http/kickstart/fedora.ks.j2)
- The OS get installed and the machine reboots to the new operating system - The OS get installed and the machine reboots to the new operating system
- Terraform will create a Kubernetes cluster - Terraform will create a Kubernetes [cluster](./infra/main.tf)
- ArgoCD will install the applications - ArgoCD will install the [applications](./apps/resources)
### Layers
| Layer | Name | Description | Provisioner | | Layer | Name | Description | Provisioner |
|-------|------------------------|---------------------------------------------------------|---------------------| |-------|------------------------|---------------------------------------------------------|---------------------|