Linux Web Service Cluster Design And Implementation

With the development of internet technique, Web service is widely used in product propagandism, daily control, after service and e-business. Most of the enterprises hope its own Web server can meet the consecutive needs of application service and many of them will set up the Web-based basic system by Linux operation system cluster due to cost reasons. However, the markets lack of a Linux platform with high availability, agility and lost cost of hard ware.This article probes into the specifications of different clusters and make improvement on LVS Web cluster software which is widely used nowadays in Linux Web cluster. In fact, we can see from the analysis that LVS itself owns a lot of good Web cluster concepts which is excellent on Load Balancing, but lack of higher availability and credibility as a Web cluster software. Meanwhile, LVS does not consider the actual needs of application and control of the whole cluster is complicated to the controller and promulgator which will lead to inconsistent of promulgated contents if any inadvertent.Based on the above, the article makes some improvement f LVS system and build up WS-LVS Web cluster system which is more suitable for the usage of enterprises. As LVS itself has multiple choices for Load Balancing, VS/DR Load Balancing scheme is adopted after the detailed analysis and contrast for these choices. Second, Lustre cluster file system is used after crosscheck to meet the needs of the web propagandism. The major parts of the system is the newly-added cluster control mode, which amend the previous two-layer frame of prepositive Web server of LVS and can meet the availability standard of LVS by only using two servers. Meanwhile, the cluster's availability can increase with the increasing of the servers in WS-LVS cluster. The capability bottleneck in prepositive parts in LVS system.It is proved by lab data in this article that WS-LVS system owns higher availability, credibility and expansibility than the previous LVS system. At the same time, WS-LVS system owns lot characteristics of mainstreamed business cluster system, which can meet the Web application service building up requirement of all kinds of business and has high usage value. The system is still based on Linux and open to source code, which makes the possibility of system localization for enterprises.