What container orchestration systems for Linux do you know? What isolation technologies does Linux provide? What does the /proc directory contain?

Container orchestration systems for Linux:

• Kubernetes — the most popular system for automating deployment, scaling, and management of containers.
• Docker Swarm — built-in orchestration in Docker.
• Apache Mesos — a platform for resource management and orchestration.

Isolation technologies in Linux:

• Namespaces — isolate processes by various aspects (PID, network, filesystem, etc.).
• cgroups (control groups) — limit and control resource usage (CPU, memory, disk).
• SELinux/AppArmor — access control and security systems.
• chroot — changes the root directory of a process.

The /proc directory:

• A virtual filesystem providing information about kernel and process status.
• Contains files and directories with data about processes (by PID), system configuration, statistics, kernel parameters.
• For example, /proc/cpuinfo — information about the processor, /proc/meminfo — about memory.

Thus, Linux provides powerful tools for container isolation and management, and the /proc directory serves as an interface for monitoring and interacting with the kernel and processes.