INFSO-RI-508833 Enabling Grids for E-sciencE www.eu-egee.org Computing Element & Torque Server Installation Giuseppe La Rocca INFN Catania - Italy First.

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INFSO-RI Enabling Grids for E-sciencE Computing Element & Torque Server Installation Giuseppe La Rocca INFN Catania - Italy First Latin American Workshop for Grid Administrators November 2005

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Outline What is a Computing Element (CE) ? What is a Torque Server ? How to install a Computing Element and a Torque Server. How to configure

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela What is a CE? The CE is a service representing a computing resource. Its main functionally is job management (job submission, job control, etc.). For job submission, the CE can work in: – push model – push model (where the job is pushed to a CE for its execution). – pull model – pull model (where the CE asks the WMS for jobs).

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela What is Torque? TORQUETORQUE (Tera-scale Open-source Resource and QUEue management) is a resource management providing control over batch jobs and distribuited compute resource. The Torque System is composed by a: –pbs_server –pbs_server which provides the basic batch services such as receiving/creating a batch job or protecting the job against system crashes. –job_scheduler –job_scheduler which contains the site's policy by means of it decide which job must be executed. –pbs_mom –pbs_mom which places the job into execution. It is also responsible for returning the job’s output to the user.

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Installing CE + Torque Server

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Installation Start from a fresh install of SLC Installation via – Installer script ( – APT Installation will install all dependencies, including – other necessary gLite modules – external dependencies JAVA is not included in distribution. Install it separately (>= 1.4.2_06)

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Request host certificates for CE. – Install host certificate (hostcert.pem and hostkey.pem) in /etc/grid-certificates. – chmod 644 hostcert.pem – chmod 400 hostkey.pem If planning to use certificates released by unsupported EGEE CA’s, be sure that their public key and CRLs (usually distributed with an rpm) are installed. – The CRL of the VO GILDA are available from Installing pre-requisites

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela The Resource Management System must be installed on CE node, or on a separate dedicate node, before installing and configuring the CE module. This release of the CE module supports PBS, Torque and LSF. Installing pre-requisites (cont.)

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Installing CE+Torque Server via apt 1.Verify if apt is present: – rpm -qa | grep apt – Install apt if necessary:  rpm -ivh cnc6-8.SL.cern.i386.rpmhttp://linuxsoft.cern.ch/cern/slc30X/i386/SL/RPMS/apt cnc6-8.SL.cern.i386.rpm 2.Add gLite apt repository: –Put one this line in a file (e.g. glite.list) inside the /etc/apt/sources.list.d directory (R 1.4) – rpm rhel30 externals Release1.4 updates – apt-get update – apt-get upgrade 3.Install Torque Server + CE: – apt-get install glite-torque-server-config – apt-get install glite-ce-config See

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela If the installation is performed successfully, the following components are installed: – gLite in /opt/glite – Condor in /opt/condor-x.y.x (where x.y.z is the current condor version) – Globus in /opt/globus – Tomcat in /var/lib/tomcat5 – Torque in /var/spool/pbs Installing CE+Torque Server via apt (cont.)

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Torque Server & CE Configuration Configuration comes through the execution of pyhton scripts, which takes as input XML files. So services have to be configured by editing these XML files. Attributes in XML file are well commented and self- explaining. XML files are provided as templates, under / opt/glite/etc/config/templates Copy templates file to /opt/glite/etc/config Edit each of them separately. Then we could launch the configurator scripts for Torque Server and CE.

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela List of XML files to configure: glite-global.cfg.xml glite-security-utils.cfg.xml glite-torque-server.cfg.xml glite-rgma-common.cfg.xml glite-rgma.gin.cfg.xml glite-rgma-servicetool.cfg.xml glite-rgma-servicetool-serviceName.cfg.xml glite-dgas-client.cfg.xml glite-ce.cfg.xml Torque Server & CE Configuration (cont.)

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-global.cfg.xml Check your java package installed.

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-security-utils.cfg.xml Set the parameters to correctly build files needed by GSI. Enable fetch-crl cron-job <install.fetch-crl.cron description="Install the glite-fetch-crl cron job. Possible values are 'true' (install the cron job) or 'false' (do not install the cron job)" value="true"/>

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Enable glite-mkgridmap cron-job. <install.mkgridmap.cron description="Install the glite-mkgridmap cron job and run it once. Possible values are 'true' (install the cron job) or 'false' (do not install the cron job)" value=“true"/> glite-security-utils.cfg.xml (cont.)

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Edit /opt/glite/etc/glite-mkgridmap.conf as follow: #### GROUP: group URI [lcluster] group ldap://grid-vo.cnaf.infn.it:10389/ou=Testbed-gilda,o=gilda,c=it.gilda group vomss://cert-voms-01.cnaf.infn.it:8443/voms/gildav?/gildav.gildav gmf_locat /opt/glite/etc/grid-mapfile-local /opt/glite/etc/glite-mkgridmap.conf /opt/glite/etc/grid-mapfile-local Edit /opt/glite/etc/grid-mapfile-local as follow: “/gildav/*”.gildav

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-torque-server.cfg.xml grid038.ct.infn.it <torque-wn.name description="worker node name to be used by the torque server. It can also be the CE itself. Example: lxb1426.cern.ch." grid038.ct.infn.it value="grid038.ct.infn.it"/> <torque-wn.number.processors description="Number of virtual processors on the node. Example: 1,2,.... [Type: string]" 2 value="2"/>

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela <rgma.server.hostname description="Host name of the R-GMA server. [Example: lxb1420.cern.ch] [Type: 'string']" value="rgmasrv.ct.infn.it"/> <rgma.schema.hostname description="Host name of the R-GMA schema service. (See also configuration parameter 'rgma.server.run_schema_service' in the R-GMA server configuration file in case you install a server). [Example: lxb1420.cern.ch] [Type: 'string']" value="rgmasrv.ct.infn.it"/> glite-rgma-common.cfg.xml

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela <rgma.registry.hostname description="Host name of the R-GMA registry service. You must specify at least one hostname and you can specify several if you want to use several registries. (See also configuration parameter 'rgma.server.run_registry_service' in the R-GMA server configuration file in case you install a server). [Example: lxb2029.cern.ch] [Type: 'string']"> rgmasrv.ct.infn.it glite-rgma-common.cfg.xml (cont.)

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-rgma-gin.cfg.xml <rgma.gin.run_generic_info_provider description="Run generic information provider (gip) backend (yes|no). GIP cannot be used together with the R-GMA CE provider and this parameter must be set to no if gin is used on a gLite CE node (where rgma.gin.run_ce_provider is set to yes by default) [Example='yes'][Type='string']" value="no"/>

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-rgma-gin.cfg.xml (cont.) <rgma.gin.run_fmon_provider description="Run fmon backend (yes|no). This is used by LCG for gridice. If desired, this provider can be used togther with either GIP or the CE Provider [Example='yes'][Type='string']" value="yes"/> In this case you have to install an extra package:gridice-sensor p12_sl3.i386.rpm

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-rgma-servicetool.cfg.xml Define the parameters for the gLite RGMA servicetool Service <rgma.servicetool.sitename description="DNS name of the site publisher node. This parameter must have the same value as the rgma.site-publisher.sitename parameter in the R-GMA Server configuration. Example: lxb2029.cern.ch] [Type: 'string']" value=“${HOSTNAME}"/>

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela <rgma.servicetool.vo description="List of VOs that this service is considered part of. Optional parameter - you can specify one or several or it can be left empty or be removed. [Example: EGEE] [Type: 'string']"> gildav gilda glite-rgma-servicetool-serviceName.cfg.xml

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-dgas-client.cfg.xml <dgas-client.atmClient.resource.PA.id description="Specifies the contact string of the PA where the Computing Element is registered (i.e. the PA that is responsible for setting the CE's price).The PA contact string is formed as: PA host name:port:subject of host cert" grid-demo1.ct.infn.it:56567:/C=IT/O=GILDA/OU=Host/L=INFN " value=" grid-demo1.ct.infn.it:56567:/C=IT/O=GILDA/OU=Host/L=INFN " />

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-dgas-client.cfg.xml (cont.) <dgas-client.atmClient.resource.Bank.id description="Specifies the contact string of the site HLR where the Computing Element is registered (i.e. the HLR that manages the CE's account). The HLR contact string is formed as: HLR host name:port:subject of host cert" grid-demo1.ct.infn.it:56568:/C=IT/O=GILDA/OU=Host/L=INFN value=" grid-demo1.ct.infn.it:56568:/C=IT/O=GILDA/OU=Host/L=INFN "/>

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml <voms.voname gildav gildav gilda gilda <voms.vomsnode description="The full hostname of the VOMS server responsible for each VO. Even if the same server is reponsible for more than one VO, there must be exactly one entry for each VO listed in the 'voms.voname' parameter."> cert-voms-01.cnaf.infn.it cert-voms-01.cnaf.infn.it

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml (cont.) /C=IT/O=INFN/OU=Host/L=CNAF/CN=cert- voms-01.cnaf.infn.it /C=IT/O=INFN/OU=Host/L=CNAF/CN=cert- voms-01.cnaf.infn.it

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml (cont.) <vo.sgm.user description="User name of the account allowed to update software management tags on this CE node. This is a parameter array that must match the list in voms.voname"> gildavsgm gildavsgm gildasgm gildasgm <vo.sgm.group description="Group name of the account allowed to update software management tags on this CE node. This is a parameter array that must match the list in vo.sgm.user"> gildavsgm gildavsgm gildasgm gildasgm

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml (cont.) <vo.sgm.vo.role description="The VO Role mapped to the SGM account in the grid-mapfile. This is a parameter array that must match the list in vo.sgm.user [Example: LCGAdmin][Type: string]"> VO-Admin VO-Admin

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml (cont.) <cemon.wms.host description="Array of the hostnames of the WMS server(s) that should receive notifications from this CE. This list is used to create the predefined subscriptions to be used in pull mode (asynchronous mode with predefined subscriptions). Entries in this array must match entries in the cemon.wms.port array"> glite-rb.ct.infn.it glite-rb.ct.infn.it glite-rb2.ct.infn.it glite-rb2.ct.infn.it

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml (cont.) <cemon.wms.port description="Array of the port number on which the WMS server(s) receiving notifications from this CE is listening. Entries in this array must match entries in the cemon.wms.host array">

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml (cont.) <cemon.lrms description="The type of Local Resource Managment System. It can be pbs, lsf or condor. The value pbs is also used for torque. If this parameter is absent or empty, the default type is pbs" pbs value="pbs"/> <cemon.cetype description="The type of Computing Element. It can be blah, condorc or gram. If this parameter is absent or empty, the default type is blah. blah and condorc are equivalent, they are both valid values for historical reasons" condorc value="condorc"/>

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml (cont.) <cemon.cluster-batch-system-bin-path description="The path of the lrms commands. Example: /usr/pbs/bin or /usr/local/lsf/bin" /usr/bin value="/usr/bin"/> <cemon.cesebinds description="The CE-SE bindings for this CE node. The format is: 'queue[|queue]' se se_entry point A. character for the queue list means all queues. Leave the entry empty or comment out the parameter if no CE-SE Bindings have to be configured"> '.' gildav::aliserv6.ct.infn.it::dpm /data01 '.' gildav::aliserv6.ct.infn.it::dpm /data01

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela glite-ce.cfg.xml (cont.) <custom.runtime.environment description="The entries specified in this array parameter are added to the CE info provider file as additional GlueHostApplicationSoftwareRunTimeEnvironment entries. [Example: MY_APP_1_0_0] [Type: 'string']"> CSOUND-4.13 CSOUND-4.13 DEMTOOLS-1.0 DEMTOOLS-1.0 POVRAY-3.5 POVRAY-3.5 RASTER-3D RASTER-3D

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Installation of VOMS Certificate Install the GILDA's VOMS server host certificates gildav-cert-voms-01.cnaf.infn.it.pem in the directory /etc/grid-security/vomsdir Edit the /opt/glite/etc/vomses file as follow: "gildav" "cert-voms-01.cnaf.infn.it" "15008" "/C=IT/O=INFN/OU=Host/L=CNAF/CN=cert-voms-01.cnaf.infn.it" "gildav"

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Post configuration In order to commit configuration, execute python /opt/glite/etc/config/script/glite- torque-server-config.py –-configure python /opt/glite/etc/config/script/glite- torque-server-config.py --start python /opt/glite/etc/config/script/glite-ce- config.py –-configure python /opt/glite/etc/config/script/glite-ce- config.py --start Now your CE should be capable to receive jobs coming for the WMS.

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Key-exchange /etc/sshd/sshd_configEdit /etc/sshd/sshd_config and add the following lines at the end: HostbasedAuthentication yes IgnoreUserKnownHosts yes IgnoreRhosts yes Restart the server with: /sbin/service sshd restart

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Key-exchange (cont.) /etc/ssh/ssh_know_hostsOn the CE generate an updated version of /etc/ssh/ssh_know_hosts by running: /opt/edg/sbin/edg-pbs-knownhosts Copy that file into all the WorkerNodes.

Enabling Grids for E-sciencE INFSO-RI First Latin American Workshop for Grid Administrators – Merida, Venezuela Questions…