quattor Framework for Managing Grid-enabled Large Scale Computing Fabrics Piotr Poznański(1) , German Cancio(1), Rafael Garcia Leiva(2), Lionel Cons(1) CERN, Geneva, Switzerland (2) Universidad Autonoma de Madrid (UAM), Spain Configuration arranged in hierarchies of Pan templates CERN CC cluster_name: lxbatch master: lxmaster 01 pkg_add (lsf 5. 1) lxbatch eth 0/ip: 137. 138. 4. 246 pkg_repl (lsf 5. 1_debug) lxplus 020 lxplus 001 • • lxplus GUI for configuration access name_srv 1: 137. 138. 16. 5 time_srv 1: ip-time-1 cluster_name: lxplus pkg_add (lsf 5. 1) disk_srv eth 0/ip: 137. 138. 4. 225 lxplus 029 Information is arranged in templates: common properties are set only once Using templates it is possible to create hierarchies to match service structures quattor functionality: • quattor deployment: Configuration Management – – – quattor is used to manage most of the Linux nodes in the CERN Computer Centre (>2500 nodes) • Multiple functionality (batch nodes, disk servers, tape servers, DB, web, …) • Heterogeneous hardware (memory, HD size, . . ) Also: UAM Madrid, NIKHEF, IN 2 P 3/LAL Configuration Database Configuration access and caching Graphical and Command Line Interfaces Fault Tolerance Monitoring • Node and Cluster Management – – – Automated node installation Node Configuration Management Software distribution and management Configuration Database RDBMS Node Management Managed nodes S Q L packages cache RPM, PKG panc CDB H T T P ftp XML Scripts Installed software kernel, system, applications. . Cache P E R L System services AFS, LSF, SSH, accounting. . CCM base OS pxe www. quattor. org Node Configuration Manager (NCM) dhcp Central control • Primary configuration is kept centrally (and replicated on the nodes) • Transactional validation, version control • A single source for all configuration information nfs/http Node CDB package s SW package Manager (SPMA) Software Repositories nfs CLI S O A P Node Management http GUI Configuration Management Node SWRe p (RPM, PKG) Modularity, extensibility • Scalable and multivendor Software Package Manager (RPM, Installation server PKG) Install server • Service specific Vendor System configuration installer components make the RH 73, RHES, necessary system Fedora, … changes Node • Installation manager (re)install Install steers and configures Manage the vendor system r installer
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