Difference: IgiEmi (19 vs. 20)

Revision 202012-01-01 - CristinaAiftimiei

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META TOPICPARENT	name="IGIGuides"

IGI (based on EMI) Installation and Configuration

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CREAM CE installation and Configuration

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CREAM CE Installation and Configuration

Have a look to the section Repository Settings and ensure that you have the common repo files.
Before starting the installation procedure remember to clean all yum cache and headers:

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yum clean all

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The CREAM CE Services were tested with gLite WN SL5 x86_64 and also with ig_WN SL5 x86_64. We remember the Toque Server and client work only if the CE and the WN is SL5 x86_64 and the MAUI version is equal in the server and client side. Please update the WN if you have an old installation.

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The CREAM CE Services were tested with gLite WN SL5 x86_64 and also with ig_WN SL5 x86_64.

Please remember that the TORQUE Server and Client work only if the CE and the WNs are SL5 x86_64 and the MAUI version is the same in the server and client nodes. Please update the WN if you have an old installation.

CREAM CE Prerequisites

Host certificate installation:

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In the host were CREAM CE is intalled must be configured with X.509 certificates signed by a trusted Certification Authority (CA). Usually the hostcert.pem and hostkey.pem certificates are located in the /etc/grid-security/ directory, and they must have permission 0644 and 0400 respectively:

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All nodes except UI, WN and BDII require the host certificate/key files to be installed. Contact your national Certification Authority (CA) to understand how to obtain a host certificate if you do not have one already.

Once you have obtained a valid certificate:

hostcert.pem - containing the machine public key
hostkey.pem - containing the machine private key

make sure to place the two files in the target node into the /etc/grid-security directory and check the access right for hostkey.pem is only readable by root (0400) and that the public key, hostcert.pem, is readable by everybody (0644).

Check existence

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Batch System:

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If you will use LSF (licences are needed). The server/client installation must be done manually. Have a look to Platform LSF documentation

, whereas Torque server/client installation is included in the Toque metapackages.

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If you will use LSF (licences are needed) - The server/client installation must be done manually. Have a look to Platform LSF documentation,
TORQUE server/client installation is done through the use of the -torque- metapackages, see bellow

Access to batch system log files

It doesn't matter what kind of deployment you have, batch-system master on a different machine than the CE (TORQUE or LSF) or on the same one, you have to be sure that you provide access to the batch system log files: You must set up a mechanism to transfer accounting logs to the CE:

through NFS (don't forget to set $BATCH_LOG_DIR and $DGAS_ACCT_DIR in <your-site-info.def> configuration file)
through a daily cron job to the directory defined in $BATCH_LOG_DIR and $DGAS_ACCT_DIR in <your-site-info.def> configuration file

CAs installation:

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yum install emi-cream-ce

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Batch system utility installation

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Batch System Utilities installation

After the installation of the CREAM CE metapackage it is necessary to install the batch system specific metapackage(s):

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After service installation to have a look if all were installed in a proper way, you could have a look to Service CREAM Reference Card

and also to the [http://wiki.italiangrid.it/twiki/bin/view/CREAM/CreamTestWorkPlan][Service Troubleshooting Guide]]. In this page you can found were all the log files are written, what daemons are running after installation and any other useful service information.

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Documentation References:

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CREAM Documentation References:

* Functional Description

* Software Design Description

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-- SergioTraldi - 2011-11-10

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