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Proxmox Containers

Creating an LXC Container

LXC (Linux Containers) is a lightweight virtualization method that uses containerization to run multiple isolated Linux systems (containers) on a single host. Unlike full virtual machines, LXC shares the host kernel, making it more resource-efficient and faster to start, ideal for lightweight workloads and testing environments.

Steps:

  1. Download or upload an LXC template to your Proxmox storage (e.g., local).

  2. Go to Create CT in the Proxmox Web GUI.

Fill in

  • General: Hostname: e.g., ubuntu-container
  • Template: Select the desired LXC template (e.g., ubuntu-22.04-standard)
  • Root Disk:
  1. Choose local-lvm or other storage
  2. Set disk size

Fill in

  • CPU & Memory: Example: 1-2 cores, 2GB RAM
  • Network:
  1. Select vmbr0 (bridge to LAN)

  2. Set IP configuration (DHCP or static IP)

  3. Confirm and finish the container creation wizard.

Post-Container Setup:

  • Start the container.
  • Access the container console via Proxmox GUI or SSH.
  • Inside the container, update packages and install necessary software:

LXC Templates

LXC templates allow you to quickly deploy containers with pre-installed operating systems and configurations.

Creating LXC Templates

Steps to use or add LXC templates:

  1. Download templates directly from the Proxmox GUI

    • Navigate to Node Name → Local (storage) → Content
    • Click Templates
    • Select and download the desired LXC template (e.g., ubuntu-22.04-standard)

  2. Or upload a custom .tar.gz template manually

    • Upload your custom LXC template archive to the storage’s templates folder, usually at:
      /var/lib/vz/template/cache/

Using LXC Templates

  • When creating a new container, select the downloaded or uploaded template as the base image
  • Proceed with container creation as usual

✅ Leveraging LXC templates speeds up container deployment and ensures environment consistency.