cluster:Worker/2/node
Contents |
Worker node
Prepare
- Operating system
- Scientific Linux version 5.6 64 bit
Optimizing the configuration:
Use minimal operating system installation without firewall. To verify installed packages use the command
-
rpm -qa | grep package_name
Install the following additional packages:
-
yum -y install wget yum rpm make gcc gcc-c++ tar sed zlib openssl
After the installation is complete, turn off any unnecessary services (like gpm, sendmail, cups, haldaemon, messagebus, pcmcia, anacron, atd) with the following command:
-
chkconfig <SERVICE> off
Configure the following settings for the server:
- proxy
- ntp
- script:/etc/resolv.conf
- Torque for WN
- UMD Repo
- Firewall configuration
Allowing incoming connections directed to the WNs is optional and Resource Providers can freely decide whether to permit them on a voluntary base. However, when such inbound connections are blocked, data transfers using GridFTP will be forced to work in "single-stream" mode and their performance might be accordingly degraded (how to open port in firewall).
| Service | Incoming ports (TCP) | Change to default configuration |
| GridFTP | 20000-25000 | Yes |
 WN should have an access to external network |
administrator's script: prepare.sh
#!/bin/bash# install umd#clean oldsudo - su
rm /etc/yum.repos.d/UMD* /etc/yum.repos.d/epel*
wget http://download.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
wget http://repository.egi.eu/sw/production/umd/1/sl5/x86_64/updates/umd-release-1.0.2-1.el5.noarch.rpm
rm -f epel-release-5-4.noarch.rpm umd-release-1.0.2-1.el5.noarch.rpm
yum install epel-release-5-4.noarch.rpm
yum install yum-prioritiesyum install umd-release-1.0.2-1.el5.noarch.rpm
sed -i -e "s/priority=.*/priority=5/g" /etc/yum.repos.d/UMD-1-base.repo
sed -i -e "s/priority=.*/priority=4/g" /etc/yum.repos.d/UMD-1-updates.repo
# Missing packages installationyum -y install gcc gcc-c++ openssl
#<- end routine
Install
There are some types of packages to install into the Cluster Node that it will provide the Worker Node functionality
- glite-WN packages to operate with Grid middleware
administrator's script: install.sh
#!/bin/bash# install worker node packages# install glite-WN-3.2yum -y install glite-yaim-torque-utils.noarch yaim-voms.x86_64 glite-yaim-clients.noarch glite-yaim-core.noarch glite-yaim-mpi.noarch glite-yaim-torque-client.noarch lcgutil-yaim.noarch lfc-yaim.noarch yaim-glexec-wn.noarch
Configure
- Mount File system
- Configure users
- Prepare WNs for gLite
- The packages for the gLite middleware and OGSA-DAI will be provided by NFS server.
- The middleware configuration for all Worker nodes is unique to any WN.
- This require the corresponding WN performs the write rights for the configuration scripts to the directory /opt/glite-MW.
- This directory mounts with appropriate write rights.
- Rights configuration can be changed later, after general configuration.
- The specific configuration can be implemented using the prepared templates on the: http://www.d-grid.de/index.php?id=132
- The info.def, groups.conf and users.conf files are required for the WN configuration.
| Note: The site-info.def have the JAVA_LOCATION which should be configured!
|
WARNING:
The dgrid_env.sh script should be edited and the variables VOS, INSTALL_ROOT and DGRID_VO_DIRECTORY adjusted. The script ensures that only the D-Grid VOs users used the middleware environment variables.
| The dgrid_env.sh is calling another script - grid_env.sh
|
- Optional adjustment: In order to accelerate the WN configuration, the Certificates and CRLs configurations can be denied (they will be executed on the gLite-CE). This require removing the following functions from the
$GLITE_DIR/glite/yaim/scripts/node-info.def:- install_certs_userland
- config_fix_edg-fetch-crl-cron
- config_crl
by using the function TAR_WN_FUNCTIONS.
| The following error message is NOT important: [ERROR] Failed to add group
|
administrator's script: configure.sh
Update
administrator's script: update.sh
