A virtual machine embarks a complete guest operating system. A container isole an application while sharing the kernel of the host.
In brief….Containers do not replace all virtual machines. It is common to run containers inside VM in order to combine isolation of, infrastructure and application agility.
Solution A….
Virtual machine
The virtual machine Simulates a complete computer with its processors, memory, disks and guest system.
Key points…
- Strong insulation between guest systems
- Can run different systems on the same hypervisor
- More resources
Solution B….
Continuity
The container groups the application and its dependencies in an isolated environment sharing the kernel.
Key points…
- Quick start
- Reproducible Deploy
- Platform-dependent insulation and compatibility
Comparative table….
| Criterion…. | Virtual machine | Continuity |
|---|---|---|
| Guest system | Complete | Shared core |
| Starting | Seconds to minutes | Very fast |
| Resources | More important | Lighter |
| Use | Complete servers and legacy applications | Microservices and Appliance Deployments |
Choose Virtual Machine if…
You need to completely isolate a system, use another OS or host an application that requires a complete machine.
Choose Continuity if…
You develop or deploy a portable, automated application adapted to a containerized architecture.
Key takeaways
Containers do not replace all virtual machines. It is common to run containers inside VM in order to combine isolation of, infrastructure and application agility.
Deepening the two notions….
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