Hi,
Which one better, vm or lxc? what are advantages and disadvantages from both of them on proxmox?
Thanks
Which one better, vm or lxc? what are advantages and disadvantages from both of them on proxmox?
Thanks
VM or LXC
- Thread starter rian81
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- lxc virtual machine
LXC (Linux Containers) provide a semi-isolated user space environment for running applications, giving them a "semi" separate environment from the host system. Unlike traditional VMs, they are not completely isolated and are not OS-agnostic.
Advantages and Disadvantages of LXC Containers
- Quick Startup: LXC containers do not require a full boot process; they just start their environment and any installed services.
- Potential Interference: Because they run directly on the host, they can leak or interfere with the host under extreme conditions.
- AppArmor Integration: Some additional configuration is required for AppArmor, usually enabling a feature via the GUI.
- Memory Constraints: Low memory on the server or within the LXC can lead to process termination.
- Migration Limitations: Live migrations are not possible; the container must be stopped, copied, and restarted on another host.
- Resource Sharing: Pass-through is not required as containers can share and see many of the server's resources, such as the GPU, unlike VMs which lock resources.
- OS Dependency: LXC containers can only run on Linux or an OS that uses the server's kernel.
- Flexible Storage: Containers can either carve out disk space or use existing storage on the server through mount point setup.
- Shared Mount Points: Containers can share/use the same mount points without needing a third-party sharing mechanism like NFS.
- Host Accessibility: The host has direct access to the container's filesystem.
- Simpler Backups: Backups are straightforward as they do not involve a virtual disk, just the directory and file structure (like a large zip or tgz file).