OpenVZ Interview Question:

Can you please explain what are the containers that are involved in virtualization and isolation?

Submitted by: Administrator

The container consists of:
• Files that consist of system libraries and applications that provides programmers to write the code without looking further. It provides virtualized files as well that keeps the virtualization for the user.
• Users and groups: it consists of isolated root user that allow user to group other users and set the permissions individually or either as groups.

• Process tree: consists of processes that contain other processes under it. The level start from init and it goes as the each process is added.

• Network: consists of the configuration for virtual network devices and the entire container to have its own IP addresses for communication with other devices.

• Devices: consists of access permissions that are used to connect it with the real devices like network interfaces, serial ports, parallel ports, etc.

• IPC objects: consists of the files that are used for inter process communication like shared memory, semaphore, etc.
Submitted by: Administrator