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| ShaoLin HA Cluster 1.0 Installation Manual and Operations Guide | ||
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| Prev | Chapter 1. Introduction to ShaoLin HA Cluster | Next |
In a cluster system, it is important to eliminate single point of failure in terms of hardware. Other than this, data integrity and system health checking is very important.
The ShaoLin HA Cluster cat operate from two independent machines. Provides complete redundancy and can have no single point of failure (SPOF). Shared storage can use RAID or even multiple disk arrays to achieve a high level of storage redundancy. Supports for multiple heartbeat communication channels between clusters.
ShaoLin HA Cluster works independent of any types of Linux file systems and volumes, including journaling file systems and software RAID drivers. This ensures file systems are protected using all sorts of storage software without the need of reconfiguration or data migration. The use of journaling file systems also enables a fast recovery time without the need to run through a lengthly fsck check.
It is important to monitor the application availability. Application can fail due to various reasons. ShaoLin HA Cluster has a feature called Application Availability Control (AAC) which can execute custom status check scripts or can use the optional Service Monitoring Agent (SMA) which control the availability of a specific application. Monitoring agents are available for common database, middle-ware and services. Please check
Ensures the Linux kernel get monitored by ShaoLin HA Cluster. Communications of clusters are done by kernel modules instead of user applications. This technology is known as highly reliable and crash safe from the user space.
The user interface is an interactive menu driven interface which can be used in a local console, remote console and HTML web browser access. This ensure ShaoLin HA Cluster can be monitored and controlled by system administrator anytime, anywhere and using any type of connection.
Users can add applications to the servers using a normal installation. There is no need to custom setup and recompilation of the application or service. Application software installation only need to be done on one server only. The system image is simply shared among the clusters, eliminates cluster administration work such as data synchronization and configuration testing on both nodes. The chance of mis-configured services which due to human errors are very low. Clusters can operate in diskless mode, eliminate the local internal storage management and less chance of failure for both clusters.
Runs on x86 PC based commodity hardware. There is no need for proprietary type of architecture to operate. Future investment protection of your ebusiness application and cluster software are assured.
ShaoLin HA Cluster is compatible with the Linux Logical Volume Manager and software RAID. This ability enables production servers to employ enterprise storage management technologies to provide scalability and redundancy.
