What is the main task and the advantages of using Docker Swarm for container orchestration?

Docker Swarm is a built-in Docker tool for container orchestration that allows combining multiple Docker hosts into a single cluster. The main task of Docker Swarm is automatic management of deployment, scaling, and load balancing of containerized applications.

Advantages of using Docker Swarm:

• Ease of setup: integrated into Docker, requires no separate installation.
• Scalability: easily add or remove cluster nodes.
• High availability: automatically restarts containers in case of failures.
• Load balancing: distributes requests among containers.
• Declarative management: you describe the desired state, and Swarm maintains it.

Example command to initialize Swarm:

docker swarm init

Thus, Docker Swarm simplifies managing containerized applications in production, ensuring reliability and ease of scaling.