Wednesday, February 9, 2011

How to make a redundancy(Secondary) LDAP Server

You must stop the ldap service in two primary and secondary LDAP Server.

1. run "db_checkpoint" to make sure all the data have been written inside the BDB database:
--> db_checkpoint-4.3 -1 -h /var/db/openldap-data/

Copy ldap database from primary server to second server :
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scp IP:/var/lib/ldap/* /var/lib/ldap/ (doing on the secondary server)

or scp /var/lib/ldap/* root@IP:/var/lib/ldap/ (doing on the primary server)

chown -R ldap.ldap /var/lib/ldap

chmod 700 /var/lib/ldap
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1. Setup a new LDAP Server that its settings are similiar with the primary LDAP Server.

2. Add the following lines to the configuration file(slapd.conf) in Primary LDAP Server:
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Line1 : replogfile /var/lib/ldap/replica.log

Line2 : replica uri=ldap://Secondary LDAP Server's IP binddn="cn=Manager,dc=my,dc=domain,dc=name" bindmethod=simple credentials=password
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3. Add the following lines to the configuratino file(slapd.conf) in Secondary LDAP Server:
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Line1 : updatedn "cn=Manager,dc=my,dc=domain,dc=name"
Line2 : updaterefldap://Primary LDAP Server's IP
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1 comment:

  1. WorkingMarch 18, 2011 at 9:14 PM

    Method 2- to backup primary database to secondary database:
    1. Export primary BDB database:
    --> slapcat -b "dc=abc,dc=abc,dc=abc" -l /tmp/contents.ldif

    2. Copy data to secondary ldap server:
    --> scp /tmp/contents.ldif root@IP:/tmp/contents.ldif

    3. Import data to secondary ldap database:
    --> slapadd -l /tmp/contents.ldif

    4. Change the owner for the database:
    --> chown ldap.ldap /var/lib/ldap/*.*

    5. Done

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