Load Balanced Server Clusters

Parallels H-Sphere interface allows you to set master-slave relations between servers in Web and mail clusters. Please refer to the complete procedure of installation and configuration of load balanced cluster servers in Parallels H-Sphere Sysadmin Guide.

To structure Parallels H-Sphere physical servers in a load balanced cluster:

1. Add physical servers to Parallels H-Sphere.
2. Create server groups on these servers, depending on their functionality. Servers that belong to the same cluster must have the same server group created on them.
3. Create master servers:
   1. In the E. Manager -> Servers menu choose P. Servers.
   2. On the page which lists physical servers click the needed server name. Turn Load Balance Server on:

      

   3. On the Load Balanced Server page chose No master and click change.
   4. Add web or mail logical server group to each created physical server.
4. Create slave servers. Enable Load Balanced Server for the rest of the servers choosing a master server for them:

   

5. As the result, on the Physical Servers page you should have load balanced clusters visualized with master and slave servers clearly distinguished:

   

Important: Logical servers can't be created on slave servers. Any number of slave servers can be created for master mail and load balanced web servers.