LXC Linux Containers
LXC Linux Containers (LXC) provides lightweight, operating system-level virtualization on Linux. It allows running multiple isolated Linux systems on a single host with minimal resource overhead.
Linux Containers: Lightweight OS Virtualization
LXC Linux Containers (LXC) provides lightweight, operating system-level virtualization on Linux. It allows running multiple isolated Linux systems on a single host with minimal resource overhead.
What is LXC Linux Containers?
LXC (Linux Containers) is an operating-system-level virtualization technology that allows multiple isolated Linux systems to run on a single Linux host. LXC relies on cgroups and namespaces functionality in the Linux kernel to provide strong isolation of resources like CPU, memory, block I/O and network between containers.
Some key characteristics of LXC:
- Very low overhead - Containers share the same Linux kernel, requiring no hypervisor. This allows higher server efficiency and density.
- Application isolation - Each container runs as an isolated system and has its own software, libraries, file system structure etc.
- Resource control - CPU, memory, I/O and network resources can be restricted on a per-container basis.
- Security - Kernel namespaces provide strong isolation between containers and the host system.
- Portability - Images can be easily migrated between different Linux hosts.
With lightweight virtualization, high scalability and carrier-grade security, LXC offers an attractive approach for deploying scalable services on shared infrastructure.
LXC Linux Containers Features
Features
- OS-level virtualization for running multiple isolated Linux systems on a single host
- Resource isolation of CPU, memory, block I/O, network, etc
- Near-native performance with minimal overhead
- Live migration of containers between hosts
- Snapshots and cloning of containers
- Support for different Linux distributions
- Integration with common orchestration tools like Kubernetes
Pricing
- Open Source
Pros
Lightweight and efficient resource utilization
Near-native performance compared to full virtualization
Easy to deploy and manage at scale
Allows consolidating services on fewer servers
Enables portable workloads across environments
Integrates well with automation and orchestration tools
Cons
Less isolation than full virtualization
Shared kernel so host security issues can affect containers
Limitations around running non-Linux or mix of Linux distros
Less support for Windows services/tools
Steeper learning curve than full virtualization
Official Links
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Docker
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KVM (Kernel-based Virtual Machine)
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Distrobox
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Containerd
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OpenVZ
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Kata Containers
Kata Containers is an open source container runtime that launched in late 2017. It focuses on providing strong workload isolation and security guarantees for containerized applications. Some key aspects of Kata Containers include:Speed - Uses extremely lightweight virtual machines to minimize overhead vs traditional VMsSecurity - Workloads run in hardware...
