View source for stoney cloud: OpenLDAP directory set-up

= Abstract =
This document describes the set-up of the OpenLDAP directory of the stoney cloud. This directory contains the data of [[:Category:Self-Service Modules|Self-Service Modules]] (services) like [[:Category:stoney core|stoney core]], [[:Category:stoney conductor|stoney conductor]], [[:Category:stoney vm|stoney vm]], [[:Category:stoney backup|stoney backup]] and more.

= Directory set-up =

== Indices ==
If you see entries similar to the following entry, you need to add indices to your slapd.conf configuration file:
 grep bdb_equality_candidates /var/log/syslog/slapd.log

 Oct  2 13:39:19 stoney-cloud-node-01 slapd[19508]: <= bdb_equality_candidates: (dhcpHWAddress) not indexed

=== Adding an index ===
Adding an index to your slapd.conf configuration file:
 vi /etc/openldap/slapd.conf

 index           dhcpHWAddress                       eq

Now stop the OpenLDAP daemon:
 /etc/init.d/slapd stop

Rebuild all you indices (works well for small directories):
 slapindex -f /etc/openldap/slapd.conf

Set the proper permissions:
 chown ldap:ldap /var/lib/openldap-hdb/foss-cloud/*
 chmod 700 /var/lib/openldap-hdb/foss-cloud/*

Now start the OpenLDAP daemon:
 /etc/init.d/slapd start

Make sure, that the OpenLDAP daemon started cleanly:
 tail -f /var/log/syslog/slapd.log

 Oct  2 14:49:49 stoney-cloud-node-02 slapd[15191]: @(#) $OpenLDAP: slapd 2.4.30 (Feb  4 2013 16:01:35) $
         @kvm-060:/var/tmp/portage/net-nds/openldap-2.4.30/work/openldap-2.4.30/servers/slapd
 Oct  2 14:49:49 stoney-cloud-node-02 slapd[15192]: slapd starting

 ps auxf | grep slapd

 ldap     15192  0.0  0.0 324516 21468 ?        Ssl  14:49   0:00 /usr/lib64/openldap/slapd -u ldap -g ldap -h ldaps://0.0.0.0

== Backends ==
The mdb backend to slapd(8) is the upcoming primary backend for a normal slapd database. It uses OpenLDAP's own Lightning Memory-Mapped Database (LMDB) library to store data and is intended to replace the Berkeley DB backends.

It supports indexing like the BDB backends, but it uses no caching and requires no tuning to deliver maximum search performance. Like hdb, it is also fully hierarchical and supports subtree renames in constant time.

=== slapd-hdb ===
 cd /root

 time ldapsearch -H ldaps://ldapm.stoney-cloud.org -b "ou=services,dc=stoney-cloud,dc=org" -s sub -x -D "cn=Manager,dc=stoney-cloud,dc=org" "(objectclass=*)" -v -w admin > gugus.ldif

 ldap_initialize( ldaps://ldapm.stoney-cloud.org:636/??base )
 filter: (objectclass=*)
 requesting: All userApplication attributes
 
 real    0m0.029s
 user    0m0.010s
 sys     0m0.000s

Size of the database with all the indices:
 du -h /var/lib/openldap-hdb/foss-cloud

 5.2M    /var/lib/openldap-hdb/foss-cloud

 cd /var/lib/openldap-hdb/foss-cloud
 ls -alh
<pre>
total 5.2M
drwx------ 2 ldap ldap 4.0K  6. Okt 14:29 .
drwx------ 3 ldap ldap   23  6. Okt 14:29 ..
-rwx------ 1 ldap ldap 2.0K  6. Okt 14:29 alock
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 cn.bdb
-rwx------ 1 ldap ldap  24K  6. Okt 14:29 __db.001
-rwx------ 1 ldap ldap 176K  6. Okt 14:30 __db.002
-rwx------ 1 ldap ldap 5.1M  6. Okt 14:30 __db.003
-rwx------ 1 ldap ldap 3.0M  6. Okt 14:30 __db.004
-rwx------ 1 ldap ldap 792K  6. Okt 14:30 __db.005
-rwx------ 1 ldap ldap  32K  6. Okt 14:30 __db.006
-rwx------ 1 ldap ldap  160  6. Okt 14:29 DB_CONFIG
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 dhcpHWAddress.bdb
-rwx------ 1 ldap ldap 112K  6. Okt 14:29 dn2id.bdb
-rwx------ 1 ldap ldap  32K  6. Okt 14:29 entryCSN.bdb
-rwx------ 1 ldap ldap  24K  6. Okt 14:29 entryUUID.bdb
-rwx------ 1 ldap ldap 640K  6. Okt 14:29 id2entry.bdb
-rwx------ 1 ldap ldap  10M  6. Okt 14:29 log.0000000001
-rwx------ 1 ldap ldap  64K  6. Okt 14:29 objectClass.bdb
-rwx------ 1 ldap ldap  16K  6. Okt 14:29 ou.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstDisplayName.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstIsActive.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstNode.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstSelfService.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstStoragePool.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstThinProvisioningVirtualMachine.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstVirtualMachine.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstVirtualMachinePool.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstVirtualMachinePoolType.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 sstVirtualMachineType.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 uid.bdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:29 uidNumber.bdb
</pre>

=== slapd-mdb ===
The mdb backend to slapd(8) is the upcoming primary backend for a normal slapd database. It uses OpenLDAP's own Lightning Memory-Mapped Database (LMDB) library to store data and is intended to replace the Berkeley DB backends.

It supports indexing like the BDB backends, but it uses no caching and requires no tuning to deliver maximum search performance. Like hdb, it is also fully hierarchical and supports subtree renames in constant time.

[http://www.openldap.org/software/man.cgi?query=slapd-mdb&apropos=0&sektion=0&manpath=OpenLDAP+2.4-Release&format=html slapd-mdb] - Memory-Mapped DB backend to slapd
 cd /root

 time ldapsearch -H ldaps://ldapm.stoney-cloud.org -b "ou=services,dc=stoney-cloud,dc=org" -s sub -x -D "cn=Manager,dc=stoney-cloud,dc=org" "(objectclass=*)" -v -w admin > gugus.ldif

 ldap_initialize( ldaps://ldapm.stoney-cloud.org:636/??base )
 filter: (objectclass=*)
 requesting: All userApplication attributes
 
 real    0m0.020s
 user    0m0.010s
 sys     0m0.000s

Size of the database with all the indices:
 du -h /var/lib/openldap-hdb/foss-cloud

 32M     /var/lib/openldap-hdb/foss-cloud

 cd /var/lib/openldap-hdb/foss-cloud
 ls -alh
<pre>
total 32M
drwx------ 2 ldap ldap   36  6. Okt 14:27 .
drwx------ 3 ldap ldap   23  6. Okt 14:26 ..
-rwx------ 1 ldap ldap  32M  6. Okt 14:27 data.mdb
-rwx------ 1 ldap ldap 8.0K  6. Okt 14:27 lock.mdb
</pre>

[[Category:stoney cloud]][[Category:OpenLDAP directory]]