This paper supports this conclusion with three real application benchmarks running on IBM’s Rackswitch G8316, a 40Gb Ethernet aggregation switch, in conjunction with Chelsio Communications’ 40Gb Ethernet Unified Wire network adapter. This paper shows how iWARP offers comparable application level performance at 40Gbps with the latest InfiniBand FDR speeds.
Step 1″ Install OpenLDAP packages
# yum install openldap openldap-servers openldap-clients
Step 2: Generate a password hash to be used as the admin password. This password hash will be used when you create the root user for your LDAP installation. For example:
[root]# slappasswd
New password : p@ssw0rd
Re-enter new password : p@ssw0rd
{SSHA}5lPFVw19zeh7LT53hQH69znzj8TuBrLv
Step 3: At /etc/openldap/ldap.conf
#
# LDAP Defaults
#
# See ldap.conf(5) for details
# This file should be world readable but not world writable.
include /etc/openldap/schema/core.schema
include /etc/openldap/schema/cosine.schema
include /etc/openldap/schema/inetorgperson.schema
include /etc/openldap/schema/nis.schema
#BASE dc=example,dc=com
#URI ldap://ldap.example.com ldap://ldap-master.example.com:666
# Allow LDAPv2 client connections. This is not the default
allow bind_v2
# DO not enable referrals until AFTER you have workinf directory
# service AND an understanding of referrals
# referrals ldap://root.openldap.org
pidfile /var/run/openldap/slapd.pid
argsfile /var/run/openldap/slapd.args
#######################################################################
# ldbm and/or bdb database definitions
#######################################################################
database bdb
suffix "dc=cluster,dc=spms,dc=ntu,dc=edu,dc=sg"
rootdn "cn=manager,dc=cluster,dc=spms,dc=ntu,dc=edu,dc=sg"
# Cleartext Passwords, especially for the rootdn, shoud
# be avoided. See slappasswd and slapd.conf for details
# Use of strong authentication ecouraged
rootpw {SSHA}5lPFVw19zeh7LT53hQH69znzj8TuBrLv
# The database directory MUST exist prior to running slapd AND
# should only be accessible by the slapd and slap tools.
# Mode 700 recommended.
directory /var/lib/ldap
# indices to be maintain for this database
index ObjectClass eq,pres
index ou,cn,mail,surname,givenname eq,pres,sub
index uidNumber,gidNumber,loginShell eq,pres
index uid,memberUid eq,pres,sub
index nisMapName,nisMapEntry eq,pres,sub
#SIZELIMIT 12
#TIMELIMIT 15
#DEREF never
TLS_CACERTDIR /etc/openldap/certs
Step 4: Start the Service
# service slapd start
Step 5: Check that the service is working.
[root@ldap init.d]# netstat -lnpt |grep 389 tcp 0 0 0.0.0.0:389 0.0.0.0:* LISTEN 13513/slapd tcp 0 0 :::389 :::* LISTEN 13513/slapd
Step 6: Create LDIF file to add data
# vim /etc/openldap/base.ldif # cluster.spms.ntu.edu.sg dn: dc=cluster,dc=spms,dc=ntu,dc=edu,dc=sg dc: cluster objectClass: top objectClass: domain # People, cluster.spms.ntu.edu.sg dn: ou=Users,dc=cluster,dc=spms,dc=ntu,dc=edu,dc=sg ou: Users objectClass: top objectClass: organizationalUnit # Groups, cluster.spms.ntu.edu.sg dn: ou=Groups,dc=cluster,dc=spms,dc=ntu,dc=edu,dc=sg ou: Groups objectClass: top objectClass: organizationalUnit # Computers, cluster.spms.ntu.edu.sg dn: ou=Computers,dc=cluster,dc=spms,dc=ntu,dc=edu,dc=sg ou: Computers objectClass: top objectClass: organizationalUnit
The Linux Cluster 