FedFsInstallNsdbCertificates0.9
From Linux NFS
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Project: fedfs-utils
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Introduction
A Namespace Database, or NSDB, is the repository for fileset location information in a FedFS domain. At its core, an NSDB is simply an LDAP server with an NSDB Container Entry, or NCE, for short. FedFS data is stored as children of this entry.
In this article, we show how to create and distribute x.509 LDAP server certificates. With these certificates, NSDB clients (fileservers or NSDB administrative tools) can use TLS when communicating with NSDBs.
LDAP server configuration
For now, this bit is specific to OpenLDAP on Fedora. More to come.
On your NSDB LDAP server, the following steps will create an LDAP server and CA certificate:
# cd /etc/pki/tls/certs # rm -f slapd.pem # make slapd.pem
Respond to each prompt as appropriate. Allow slapd to read the PEM file:
# chown ldap.ldap slapd.pem # chmod 440 slapd.pem
Now enable slapd to find the key. On your NSDB LDAP Server, edit /tmp/ldif and add only the following lines:
dn: cn=config changetype: modify replace: olcTLSCACertificateFile olcTLSCACertificateFile: /etc/pki/tls/cert.pem dn: cn=config changetype: modify replace: olcTLSCertificateFile olcTLSCertificateFile: /etc/pki/tls/certs/slapd.pem dn: cn=config changetype: modify replace: olcTLSCertificateKeyFile olcTLSCertificateKeyFile: /etc/pki/tls/certs/slapd.pem dn: cn=config changetype: modify replace: olcTLSVerifyClient olcTLSVerifyClient: never
dn: cn=config changetype: modify replace: olcSecurity olcSecurity: tls=1
Run this command:
# ldapmodify -x -D cn=Manager -W -f /tmp/ldif
Replace "cn=Manager" with your server's administrator DN, and supply an appropriate password when prompted.
Passing out the server's x.509 certificate
The CA cert created above (in the file /etc/pki/tls/cert.pem) can now be distributed to fileservers that participate in your FedFS domain. The fileservers then use this certificate to authenticate your NSDB when performing junction resolution.
Suppose the name of your LDAP server is nsdb.example.net. After copying the file containing the certificate to /tmp/cert.pem on your fileserver, use this command on the fileserver to install the certificate:
# nsdbparams update -f /tmp/cert.pem nsdb.example.net
This operation copies the certificate material to a private directory, and saves the location of the copy in the fileserver's NSDB connection parameter database. Now, whenever the fileserver resolves a FedFS junction, it will use this certificate to establish a secure connection to nsdb.example.net.
To complete this task, copy the certificate and run the nsdbparams on each fileserver that will contain FedFS junctions.
