MicroColor ServHA Cluster dual-machine hot standby monitoring terminal For Linux

ServHA is a dual-machine cluster product running on Windows and Linux platforms. It is responsible for managing two hosts to run their own application systems. When the host or the software on the host fails, manual intervention is not required. The other host in the dual-machine cluster Through the heartbeat line, the faulty host can be detected, and the application system of the original host can be accurately and quickly transferred to another host to continue running, achieving uninterrupted operation of the entire system, thus ensuring the normal external services of the entire system and providing benefits to the enterprise. It provides a strong guarantee for the 24 hours × 365 days of critical business applications of business institutions.

The two servers (hosts) of the ServHA dual-machine system are connected to the disk array (shared storage) system. The user's operating system, application software and ServHA software are installed on the two hosts respectively, and shared data such as databases are stored on the storage system. A heartbeat connection is established between two hosts through a private (or public) network. After the configured system host starts working, the ServHA service starts to monitor the system. Through the heartbeat connection, the ServHA service on each host can monitor the status of the other host. When the working host fails, the heartbeat information will change, and this change can be captured by the ServHA service through the heartbeat connection. After capturing this change, ServHA will control the system to perform host switching, that is, the backup machine starts the same application as the working host to take over the work of the working host (including providing TCP/IP network services, storage system access, etc.) and An alarm is issued to prompt management personnel to repair the faulty host.