1. ODP Global node cluster model
Alexander Kolesnikov
RIHMI-WDC, Russia

2. Cluster software Used only GNU GLP software Open-source components
VMware ESXi 5.5
OS Centos 5.x
Heartbeat 3.0
Pacemaker
Drbd 8.4
LCMC

3. Advantages using cluster
Hardware redundancy for failure of the system resources, the server OS, etc.
Software redundancy in case of failure of the software, operating system, etc.
Constant directory synchronization of the component metadata.
Management of applications and components launch order
Ability to restart the associated application servers and database
Ability to determine malfunction in application servers and databases
. Minimal downtime in the event of a component failure

4. Examples of real usage Russian segment of WIS
Federal Russian distributed data system (ESIMO)
Russian segment of WIS
IODE Ocean Data Portal (global node)

5. Cluster physical scheme

6. Cluster logical scheme

7. Network model with duplication

8. Network model without duplication

9. Cluster Manger service

10. Cluster Manager DRBD

11. Questions?