Question on cloning and replication . . .
by Matthew Harmsen
Everyone,
I received the following from a community member who is using Dogtag and
389:
I have 2 questions and 1 note.
*Note:*
Here is an interesting thing that I noticed during CA cloning:
When CA to be cloned has secure connection DS enabled, cloning
process fails.
None of docs:
* https://www.dogtagpki.org/wiki/PKI_10.5_Installing_CA_Clone
* https://github.com/dogtagpki/pki/blob/DOGTAG_10_6_BRANCH/docs/installatio...
* https://github.com/dogtagpki/pki/blob/master/docs/installation/ca/Install...
is covering this issue.
Solution here is to use
pki_clone_replication_master_port=389
pki_clone_replication_clone_port=389
pki_clone_replication_security=None
https://github.com/dogtagpki/pki/blob/DOGTAG_10_5_BRANCH/base/server/etc/...
*Question 1 (sorry, bit long):*
When CA is cloned both DS servers have *nsslapd-referral *attribute
set in dn: *cn=o\3Dpki-tomcat-CA,cn=mapping tree,cn=config* entries
so DS on vm-users4.hostname.com <http://vm-awnuk4.hostname.com>
would have
*dn: cn=o\3Dpki-tomcat-CA,cn=mapping tree,cn=config
nsslapd-referral:
ldap://vm-users3.hostname.com:389/o%3Dpki-tomcat-CA
<http://vm-awnuk3.hostname.com:389/o%3Dpki-tomcat-CA>*
and DS on vm-users3.hostname.com <http://vm-awnuk3.hostname.com>
*dn: cn=o\3Dpki-tomcat-CA,cn=mapping tree,cn=config
nsslapd-referral:
ldap://vm-users4.hostname.com:389/o%3Dpki-tomcat-CA
<http://vm-awnuk4.hostname.com:389/o%3Dpki-tomcat-CA>*
*I wonder what is the meaning of nsslapd-referral attribute?*
**
The reason I'm asking is that I was thinking that for replication
over SSL maybe nsslapd-referral should be modified
from *ldap://vm-users4.hostname.com:389/o%3Dpki-tomcat-CA
<http://vm-awnuk4.hostname.com:389/o%3Dpki-tomcat-CA>*
to *ldaps://vm-users4.hostname.com:636/o%3Dpki-tomcat-CA
<http://vm-awnuk4.hostname.com:636/o%3Dpki-tomcat-CA>*
but when I did this nsslapd-referral attribute was reverted to
original value by DS automatically,
*so I'm trying to make sure **if nsslapd-referral attribute should
be left unchanged during enabling of SSL to DS replication?*
Just in case here is a sample of all changes on both DS (hopefully,
I didn't miss anything to have properly configured replication over
SSL):
vm-users4.hostname.com <http://vm-awnuk4.hostname.com>:
------------------------------------
dn: cn=config
nsslapd-security: on
dn: cn=RSA,cn=encryption,cn=config
nsSSLPersonalitySSL: slapd-vm-users4
nsSSLToken: internal (software)
nsSSLActivation: on
dn: cn=o\3Dpki-tomcat-CA,cn=mapping tree,cn=config
nsslapd-referral:
ldap://vm-users3.hostname.com:389/o%3Dpki-tomcat-CA
<http://vm-awnuk3.hostname.com:389/o%3Dpki-tomcat-CA>
dn:
cn=cloneAgreement1-vm-users4.hostname.com-pki-tomcat,cn=replica,cn=o\3Dpki-tomcat-CA,cn=mapping
tree,cn=config
nsDS5ReplicaPort: 636
nsDS5ReplicaTransportInfo: SSL
vm-users3.hostname.com <http://vm-awnuk3.hostname.com>:
------------------------------------
dn: cn=config
nsslapd-security: on
dn: cn=RSA,cn=encryption,cn=config
nsSSLPersonalitySSL: slapd-vm-users3
nsSSLToken: internal (software)
nsSSLActivation: on
dn: cn=o\3Dpki-tomcat-CA,cn=mapping tree,cn=config
nsslapd-referral:
ldap://vm-users4.hostname.com:389/o%3Dpki-tomcat-CA
<http://vm-awnuk4.hostname.com:389/o%3Dpki-tomcat-CA>
dn:
cn=masterAgreement1-vm-users4.hostname.com-pki-tomcat,cn=replica,cn=o\3Dpki-tomcat-CA,cn=mapping
tree,cn=config
nsDS5ReplicaPort: 636
nsDS5ReplicaTransportInfo: SSL
*Question 2:*
DS has so called "SSF Restrictions"
(https://directory.fedoraproject.org/docs/389ds/howto/howto-use-ssf-restri...
which may be configured by setting *nsslapd-minssf* attribute in
*cn=config* entry.
Default value of *nsslapd-minssf* attribute is 0. W
Minimum SSF configuration setting can be used to define the minimum
level of encryption that is required.
*Do you know what this means?*
**
*Should I be concerned?*
By the way, when is set *nsslapd-minssf* attribute to *128*, DS
becomes inaccessible and CA is not working.
Thanks in advance for any answers,
-- Matt
4 years, 1 month
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