instalación y configuración de ce+wn

FP6−2004−Infrastructures−6-SSA-026409

E-infrastructure shared between Europe and Latin America

Instalación y configuración de CE+WN

Alicia Acero FernándezCIEMAT6th EELA Tutorial Madrid 16-20/10/2006

6th EELA Tutorial, Madrid, 16-20.10.2006FP6−2004−Infrastructures−6-SSA-026409


• What is a Computing Element (CE) ?• What is a Torque Server ?• What is a Worker Node?• How to install and configure a Computing Element

with Torque Server.• How to install and configure a Worker Node with

Torque• Computing Element Testing

Outline



What is CE?

• The CE is a service representing a computing resource.

• Its main functionality is job management

(job submission, job control, etc.).

• For job submission, the CE can work in:– push modelpush model (where the job is pushed to a CE for its execution).

– pull modelpull model (where the CE asks the WMS for jobs).



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_serverpbs_server which provides the basic batch services

such as receiving/creating a batch job or protecting

the job against system crashes.– job_schedulerjob_scheduler which contains the site's policy used

to decide which job must be executed.– pbs_mompbs_mom which places the job into execution. It is also

responsible for returning the job’s output to the user.



What is a Worker Node?

• The Worker Node (WN) is a set of clients required

to run jobs sent by the CE via the Local Resource

Management System. It currently includes the:

– gLite I/O Client, – the Logging and Bookkeeping Client, – the R-GMA Client and – the WMS Checkpointing library.



Installing CE + Torque Server

WN + Torque



Preliminary and common steps

• Start from an instalation of SLC 3.0.X• Install JAVA SDK• Install and configure ntp daemon• Install the latest version of YAIM• Install the latest version of GILDA YAIM• Install X.509 host certificates (it is necessary for CE, SE

and RB) /etc/grid-security and check their file permissions.

• Install the middleware



Installing pre-requisites

• JAVA is not included in distribution. Install it separately (>= 1.4.2_08)http://java.sun.com/j2se/1.4.2/download.html

chmod +x j2sdk-1_4_2_12-linux-i586-rpm.bin

./j2sdk-1_4_2_12-linux-i586-rpm.bin

rpm -ivh j2sdk-1_4_2_12-linux-i586.rpm

Preparing... ########################################### [100%]

1:j2sdk ########################################### [100%]



Installing pre-requisites• Depending on the packages set you selected when installing the

operating system, it may be possible that lam package is installed on your WN. Please remove lam.apt-get remove lam

• There is a known installation conflict between the 'torque-clients' rpm and the 'postfix' mail client (Savannah. bug #5509). If you are going to install Torque, uninstall postfix packageapt-get remove postfix

• Check the FQDN hostname

– Ensure that the hostnames of your machines are correctly set. Run the command:

hostname -f



Installing pre-requisites

• Download and install latest version of glite-yaim-latest.rpm on all your grid nodes:

http://grid-deployment.web.cern.ch/grid-deployment/gis/yaim/

rpm -ivh glite-yaim-latest.rpm

• Download and install the latest version of gilda_ig-yaim-latest on all your grid nodes:http://grid018.ct.infn.it/apt/gilda_app-i386/utilsrpm –ivh gilda_ig-yaim-latest



Installing pre-requisites• Request host certificates for the CE to a CA

– https://gilda.ct.infn.it/CA/mgt/restricted/srvreq.php

• Create the directory /etc/grid-security and copy host certificates (hostcert.pem and hostkey.pem) in it.

• Change the permisions– chmod 644 hostcert.pem– chmod 400 hostkey.pem

• If you plan to use certificates released by unsupported EGEE CA’s, be sure that their public key and CRLs (usually distributed with a rpm) are installed.– The CRL of the VO GILDA are available from https://gilda.ct.infn.it/RPMS/ca_GILDA-1.0-1.i386.rpm



Installing pre-requisites• Syncronization among all gLite nodes is mandatory. Install ntp if

not already available for your system:– apt-get install ntp– yum install ntp

• Add your time server in /etc/ntp.conf– restrict hora.rediris.es mask 255.255.255.255 nomodify notrap noquery – server hora.rediris.es – (you can use ntp-1.infn.it – IP 193.206.144.10)

• Edit /etc/ntp/step-tickers adding your(s) time server(s) hostname• If you are running a firewall, you will have to allow inbound

comminication on the NTP port:– -A INPUT -s <NTP-serverIP-1> -p udp --dport 123 -j ACCEPT

• Activate the ntpd service with the following commands: ntpdate <your ntp server name> service ntpd start chkconfig ntpd on

– You can check ntpd’s status with:

ntpq -p



Installing CE+Torque Server

• All the configuration values to sites have to be configured in a site configuration file (site-info.def) using key-value pairs.

• This file is shared among all the different gLite node types. So edit once and keep it in a safe place

• Create a copy of /opt/glite/yaim/examples/gilda_ig-site-info.def template (coming from the lcg-yaim RPM) to your reference directory for the installation (e.g. /root):– cp /opt/glite/yaim/examples/gilda_ig-site-info.def /root/my-site-info.def

• A good syntax test for your site configuration file is to try to source it manually running the command:– source my-site-info.def



Customize gilda_ig-site-info.def

• Open file /root/my-site-info.def and set the values according to your grid environment:

MY_DOMAIN=fdi.ucm.es

CE_HOST=grid-xx.$MY_DOMAIN

RB_HOST=arquimedes.rediris.es

WMS_HOST=glite-rb.ct.infn.it

PX_HOST=grid001.ct.infn.it

BDII_HOST=euclides.rediris.es

MON_HOST=aliserv6.ct.infn.it

FTS_HOST=fts.ct.infn.it

REG_HOST=rgmasrv.ct.infn.it

:



OS_REPOSITORY="rpm http://sunsite.rediris.es/ftp/volumes/vol2/grid.infn.it/rep slc306-i386 os updates extras "

LCG_REPOSITORY="rpm

http://sunsite.rediris.es/ftp/volumes/vol2/grid.infn.it/rep glite_sl3-i386

3_0_0 3_0_0_externals 3_0_0_updates"

IG_REPOSITORY="rpm

http://sunsite.rediris.es/ftp/volumes/vol2/grid.infn.it/rep ig_sl3-i386 3_0_0

utils“

GILDA_REPOSITORY="rpm

http://sunsite.rediris.es/ftp/volumes/vol2/grid.infn.it/rep gilda_app-i386

app 3_0_0"

CA_REPOSITORY="rpm

http://sunsite.rediris.es/ftp/volumes/vol2/grid.infn.it/rep glite_sl3-i386

security"




JAVA_LOCATION="/usr/java/j2sdk1.4.2_12“MYSQL_PASSWORD=rediris06

APEL_DB_PASSWORD="APELDB_PWD"

[email protected]

SITE_NAME=“EELA Tutorial”

SITE_LOC=“Madrid,Spain"

SITE_LAT=37.5

SITE_LONG=15.152

SITE_WEB="http://www.eu-eela.org."

SITE_TIER="EELA GILDA tutorial"

SITE_SUPPORT_SITE=“root@localhost"





JOB_MANAGER=lcgpbs CE_BATCH_SYS=pbs BATCH_BIN_DIR=/usr/bin

BATCH_VERSION=torque-1.0.1bCE_CPU_MODEL=PIIICE_CPU_VENDOR=intelCE_OS="Scientific Linux SL" CE_OS_RELEASE="SL" CE_OS_VERSION=3.0.6 CE_MINPHYSMEM=1024 CE_MINVIRTMEM=2048 CE_SMPSIZE=2

CE_SI00=1000 CE_SF00=1200

CE_OUTBOUNDIP=TRUE CE_INBOUNDIP=TRUE CE_RUNTIMEENV="a list of tags"




• Edit the file /opt/glite/yaim/etc/gilda_ig-wn-list.conf and insert your WN hostnames

grid-xx.fdi.ucm.es



Installing CE+Torque Server• Copy from /opt/lcg/yaim/examples to /opt/lcg/yaim the

files: site-info.def, users.conf, wn-list.conf and modify them according to your site.

• Install the node

/opt/glite/yaim/scripts/gilda_ig_install_node /root/my-site-info.def GILDA_ig_CE_torque

• Configure the node

/opt/glite/yaim/scripts/gilda_ig_configure_node /root/my-site-info.def GILDA_ig_CE_torque




• 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




• Edit /etc/ssh/sshd_config/etc/ssh/sshd_config and add the following lines at the end:

HostbasedAuthentication yes

IgnoreUserKnownHosts yes

IgnoreRhosts yes

• Restart the server with:

/sbin/service sshd restart/sbin/service sshd restart




• On the CE generate an updated version of /etc/ssh/ssh_know_hosts/etc/ssh/ssh_know_hosts by running:

/opt/edg/sbin/edg-pbs-knownhosts

• Copy that file into all the WorkerNodes.



Installing WN Server

• Install the node

• /opt/glite/yaim/scripts/gilda_ig-install_node /root/my-site-info.def GILDA_ig_WN_torque_noapp

• Configure the node

• /opt/glite/yaim/scripts/gilda_ig-configure_node /root/my-site-info.def GILDA_ig_WN_torque_noapp



Computing ElementTesting



CE Testing

• Log as a new created user (e.g gilda003)• Edit a file and write

#!/bin/sh

sleep 10

hostname

• Save it (as test.sh) and set the permission of execution chmod 700 test.sh

• Submit the job:qsub –q short test.sh

• Test the status of the jobqstat -a



CE Testing

• After the job execution there are two output files:[dteam048@bhp0101 dteam048]$ ls

test.sh test.sh.e12 test.sh.o12

• And show these files:– Error file

[dteam048@bhp0101 dteam048]$ cat test.sh.e12

[dteam048@bhp0101 dteam048]$

– Output file

[dteam048@bhp0101 dteam048]$ cat test.sh.o12

bhp0101.ciemat.es



References

• https://gilda.ct.infn.it/docs/GILDAsiteinstall-3_0_0.html• https://grid.ct.infn.it/twiki/bin/view/GILDA/GliteElementI

nstallation



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