Construction methods and monitoring in meta-cluster systems LIT, JINR Korenkov V.V, Mitsyn V.V, Chkhaberidze D.V, Belyakov D.V

Main goals To unite in city the distributed resources in one computing system (meta-cluster) Installation of detailed monitoring of the system, Develop and debug convenient, fast mechanisms for expansion of the cluster To make management and administration of the system centralized and to develop ways of automation for some procedures

Main problems presence of heterogeneous platforms in the rectangular components Addition of cluster-node facilities on the PCs should not prevent their main usage Resources are distributed in different places over the city some functions and software on the host operating system impends the work of system under virtual pc

Loading process PC emulated by VMware. Real windows SERVER dhcp tftp nfs ntp openbps warewulf Gagnlia srv Get IP address Load Kernel and file system Mount some repositories Synchronize time Get Jobs

Logical structure Bridge Cisco Primary Out, Internet Virtual Real, Windows Out, With Nat Schools eth0 eth1 eth2 SERVER University

Cluster map Server

Used Software CERN Scientific Linux VMware – virtual PC simulator VLan – Virtual Network Simulator Warewulf – technology for creating and booting cluster nodes from network without Hard Disks. OpenPBS – Portable Batch System Ganglia Monitoring System

Problem Solving By means of VMWARE, for creations of system we receive a homogeneous environment from heterogeneous platforms VMWARE in WINDOWS starts as background process with a priority one less than usual (Bellownormal) Expansion of resources occurs using of cloning of a hard disk from an exemplary computer

Monitoring Was used Ganglia cluster monitoring system Work nodes are incorporated in different groups on classes. One class – one group On a site it is added an opportunity for detection of mistakes from the point of view of windows

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How “check errors” works PING SERVER eth1 eth2 Virtual, VMware Real, Windows

Results For creation metacluster it was used only existing technologies Computing resources have not been bought, the system is created from already being computers Use of computers as computing units of the system did not hinder their main functions

Results Heterogeneity of platforms is endowed by means of VMWARE Monitoring does administration of the cluster more convenient and helps to support reliability of the system.