יום חמישי, 23 בינואר 2014

Reset vCenter Appliance root password

To reset the root user password in the vCenter Boot the virtual appliance and navigate to the console for the virtual machine in the vSphere Client. Click in the console and press any key to display the GRUB menu. 

Note: The GRUB prompt remains on screen for few seconds before it starts the boot sequence. 

On the GRUB menu, select SUSE Linux Enterprise Server for VMware.

Type e to edit the line. A list of items in the GRUB configuration file appears.

Select the line that starts with kernel and type e to edit the line.

At the end of the line, press the spacebar and type init=/bin/sh.

Press Enter to exit edit mode.

On the GRUB screen, type b to boot into single-user mode. 

The virtual appliance boots in single-user mode.

To change the root user password, type passwd root and follow the on-screen prompts.

To restart the virtual appliance, type reboot and press Enter.

When the virtual appliance restarts, you can log in using the new password.
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יום רביעי, 22 בינואר 2014

Installing & Configuring OpenLDAP Server CentOS 6.5

== Installation ==

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yum install openldap-servers openldap-clients

== Configuration ==

Edit your ldap.conf file and enter the IP address or domain name of your server:
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vi /etc/openldap/ldap.conf
URI ldap://88.88.88.75
BASE dc=my-domain,dc=com
Copy the sample files from /usr/share/openldap to /etc/openldap and var/lib/ldap
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cp /usr/share/openldap-servers/slapd.conf.obsolete /etc/openldap/slapd.conf
cp /usr/share/openldap-servers/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
Setup a new LDAP Admin password:
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slappasswd
New password:
Re-enter new password:
{SSHA}xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Copy the encrypted password from STDOUT as it will need to be put in to configuration.

=== /etc/openldap/slapd.conf ===

Search and replace the “dc=my-domain” with “dc=my-domain”
replace the rootpw password with above encrypted password so it looks like
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rootpw {SSHA}xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Here is the config file in use
?
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#
# See slapd.conf(5) for details on configuration options.
# This file should NOT be world readable.
#
include     /etc/openldap/schema/corba.schema
include     /etc/openldap/schema/core.schema
include     /etc/openldap/schema/cosine.schema
include     /etc/openldap/schema/duaconf.schema
include     /etc/openldap/schema/dyngroup.schema
include     /etc/openldap/schema/inetorgperson.schema
include     /etc/openldap/schema/java.schema
include     /etc/openldap/schema/misc.schema
include     /etc/openldap/schema/nis.schema
include     /etc/openldap/schema/openldap.schema
include     /etc/openldap/schema/ppolicy.schema
include     /etc/openldap/schema/collective.schema
# Allow LDAPv2 client connections.  This is NOT the default.
allow bind_v2
# Do not enable referrals until AFTER you have a working directory
# service AND an understanding of referrals.
#referral   ldap://root.openldap.org
pidfile     /var/run/openldap/slapd.pid
argsfile    /var/run/openldap/slapd.args
loglevel    -1
# Load dynamic backend modules
# - modulepath is architecture dependent value (32/64-bit system)
# - back_sql.la overlay requires openldap-server-sql package
# - dyngroup.la and dynlist.la cannot be used at the same time
# modulepath /usr/lib/openldap
modulepath /usr/lib64/openldap
# moduleload accesslog.la
# moduleload auditlog.la
# moduleload back_sql.la
# moduleload chain.la
# moduleload collect.la
# moduleload constraint.la
# moduleload dds.la
# moduleload deref.la
# moduleload dyngroup.la
# moduleload dynlist.la
moduleload memberof.la
# moduleload pbind.la
# moduleload pcache.la
# moduleload ppolicy.la
# moduleload refint.la
# moduleload retcode.la
# moduleload rwm.la
# moduleload seqmod.la
# moduleload smbk5pwd.la
# moduleload sssvlv.la
# moduleload syncprov.la
# moduleload translucent.la
# moduleload unique.la
# moduleload valsort.la
# The next three lines allow use of TLS for encrypting connections using a
# dummy test certificate which you can generate by running
# /usr/libexec/openldap/generate-server-cert.sh. Your client software may balk
# at self-signed certificates, however.
TLSCACertificatePath /etc/openldap/certs
#TLSCertificateFile "\"OpenLDAP Server\""
#TLSCertificateKeyFile /etc/openldap/certs/password
TLSCertificateFile /etc/pki/tls/certs/slapd.pem
TLSCertificateKeyFile /etc/pki/tls/certs/slapd.pem
# Sample security restrictions
#   Require integrity protection (prevent hijacking)
#   Require 112-bit (3DES or better) encryption for updates
#   Require 63-bit encryption for simple bind
# security ssf=1 update_ssf=112 simple_bind=64
# Sample access control policy:
#   Root DSE: allow anyone to read it
#   Subschema (sub)entry DSE: allow anyone to read it
#   Other DSEs:
#       Allow self write access
#       Allow authenticated users read access
#       Allow anonymous users to authenticate
#   Directives needed to implement policy:
# access to dn.base="" by * read
# access to dn.base="cn=Subschema" by * read
# access to *
#   by self write
#   by users read
#   by anonymous auth
#
# if no access controls are present, the default policy
# allows anyone and everyone to read anything but restricts
# updates to rootdn.  (e.g., "access to * by * read")
#
# rootdn can always read and write EVERYTHING!
# enable on-the-fly configuration (cn=config)
database config
rootdn      "cn=admin,cn=config"
rootpw          {SSHA}xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
access to *
    by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" manage
    by * none
# enable server status monitoring (cn=monitor)
database monitor
access to *
    by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" read
        by dn.exact="cn=Manager,dc=my-domain,dc=com" read
        by * none
#######################################################################
# database definitions
#######################################################################
database    bdb
suffix      "dc=my-domain,dc=com"
rootdn      "cn=Manager,dc=my-domain,dc=com"
# Cleartext passwords, especially for the rootdn, should
# be avoided.  See slappasswd(8) and slapd.conf(5) for details.
# Use of strong authentication encouraged.
#       secret
#       {crypt}ijFYNcSNctBYg
rootpw          {SSHA}xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
access to dn.subtree="dc=my-domain,dc=com"
    by self write
    by set="[cn=Administrators,ou=groups,dc=my-domain,dc=com]/member* & user" write
    by set="[cn=Operators,ou=groups,dc=my-domain,dc=com]/member* & user" read
    by * break
access to attrs=userPassword
  by anonymous auth
  by self =rwdx
  by set="user & [cn=Administrators,ou=groups,dc=my-domain,dc=com]/member*" manage
  by dn.children="ou=Special Accounts,dc=my-domain,dc=com" auth
#access to attrs=uid,userPassword,mail
#    by self write
#    by set="[cn=Administrators,ou=group,dc=my-domain,dc=com]/member* & user" manage
#    by set="[cn=Operators,ou=group,dc=my-domain,dc=com]/member* & user" read
#    by * none
#access to *
#  by set="user & [cn=Administrators,ou=groups,dc=my-domain,dc=com]/member*" manage
#  by * break
#access to dn.children="ou=people,dc=my-domain,dc=com"
#  attrs=givenName,sn,displayName,cn,telephoneNumber,fax,postalAddress,homePhone,homePostalAddress,mobile,pager,postalCode,postOfficeBox,preferredLanguage,streetAddress,l,st
#  by self write
#  by * break
#access to dn.children="ou=people,dc=my-domain,dc=com"
#  attrs=uid,uidNumber,gidNumber,mail,telephoneNumber,mobile,departmentNumber,manager,title,initials,givenName,sn,displayName,cn,fax,organizationName,organizationalUnitName,pager,postalAddress,l,st,c
#  by * read
# 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 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
overlay memberof
cachesize 10000
checkpoint  1024 15
# Replicas of this database
#replogfile /var/lib/ldap/openldap-master-replog
#replica host=ldap-1.example.com:389 starttls=critical
#     bindmethod=sasl saslmech=GSSAPI
#     authcId=host/ldap-master.example.com@EXAMPLE.COM
create a new file root.ldif with following content
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dn: dc=my-domain,dc=com
objectClass: dcObject
objectClass: organization
dc: my-domain
o: my-domain
dn: ou=groups,dc=my-domain,dc=com
ou: groups
objectClass: organizationalUnit
dn: ou=people,dc=my-domain,dc=com
ou: people
objectClass: organizationalUnit
Remove everything in slapd.d dir and tell the slapd for root.ldif file
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rm -rf /etc/openldap/slapd.d/*
slapadd -n 2 -l /root/root.ldif
slaptest -f /etc/openldap/slapd.conf -F /etc/openldap/slapd.d
Set the appropriate permissions:
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chown -R ldap:ldap /var/lib/ldap
chown -R ldap:ldap /etc/openldap/slapd.d
Make sure the service is active on the runlevel 3:
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chkconfig --level 235 slapd on
service slapd start

== LDAPS ==

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cd /etc/pki/tls/certs
rm slapd.pem
make slapd.pem
chmod 640 slapd.pem
chown :ldap slapd.pem
ln -s /etc/pki/tls/certs/slapd.pem /etc/openldap/cacerts/slapd.pem
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vi /etc/sysconfig/ldap
SLAPD_LDAPS=yes
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vi /etc/openldap/slapd.conf
TLSCACertificateFile /etc/pki/tls/certs/ca-bundle.crt
TLSCertificateFile /etc/pki/tls/certs/slapd.pem
TLSCertificateKeyFile /etc/pki/tls/certs/slapd.pem
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vi /etc/openldap/ldap.conf
TLS_CACERTDIR /etc/openldap/cacerts
TLS_REQCERT never

== Test ==

Test if everything is up and working fine:
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rm -rf /etc/openldap/slapd.d/*
slaptest -f /etc/openldap/slapd.conf -F /etc/openldap/slapd.d
chown -R ldap:ldap /etc/openldap/slapd.d
service slapd restart
ldapsearch -x -ZZ -h localhost #(TLS)
ldapsearch -x -H ldaps://localhost #(SSL)

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