Description: A global service in Docker Swarm is a feature that allows a task to run on every node in the Swarm cluster. This means that, unlike standard services that can run on a specific number of replicas, a global service ensures that there is one instance of the service on each available node. This functionality is particularly useful for tasks that require monitoring, data collection, or any operation that must run on all nodes to ensure consistency and availability. Global services are ideal for applications that need to be present across the entire infrastructure, such as monitoring agents or logging services. Additionally, Docker Swarm automatically manages the distribution and state of these services, simplifying cluster management and enhancing application resilience. Implementing a global service is straightforward through the Docker CLI, allowing developers and system administrators to efficiently scale and manage their applications.
