CentOS High Availability

System design

IT systems that offer high availability of services must follow a specific system design approach by which they can provide the most available continuous operation. The fundamental rule of a high-availability system design approach is to avoid single points of failure. A single point of failure is a component of a system that could lead to system and service downtime if it fails. The design should avoid single points of failure, which makes the system more robust and automatically increases system and service availability.

A complex IT system providing application services can have a large number of single points of failure at different levels, but how can we eliminate all of them? The solution is redundancy. Redundancy means duplication ...