Restart (group)

In the context of computing, "Restart (group)" generally refers to a feature or functionality that allows for the coordinated restarting of a group of related processes or services. This is often employed in systems where multiple interdependent components must operate together, and a failure or update of one component necessitates the restarting of others to maintain consistency and stability.

The grouping mechanism defines which processes are considered part of the restart unit. This grouping can be based on various criteria, such as:

• Shared Functionality: Processes that perform a common task or contribute to a specific service. For example, a web server and its associated database processes.
• Dependency Relationships: Processes where the operation of one process relies on the successful operation of another.
• Administrative Convenience: Grouping processes together for easier management and control, even if they are not strictly dependent.

The purpose of a coordinated restart mechanism is to ensure that the group of processes is brought down and back up in a controlled and consistent manner. This may involve specific shutdown procedures, dependency checks, and startup sequencing to avoid data corruption or service disruption.

Restart (group) functionality is commonly found in operating systems, container orchestration platforms (like Kubernetes), and distributed systems. The specific implementation and configuration options vary depending on the system and its requirements.