Installation manual

Configuring Front-End Services
Configuring CIFS
11-30 CLI Storage-Management Guide
• \\fs2.medarch.org\lab_data
• \\fs7.medarch.org\tests
You can import each of these shares into a single namespace, where each share is in a
separate volume. From gbl-cifs mode, you can then
export each CIFS volume under
its original share name (“xrays,” “lab_data,” and “tests,” respectively). Finally, you
can use the dynamic-dns command to register all three of the original host names as
DNS aliases for the CIFS service (“fs1,” “fs2,” and “fs5”). Clients can then access all
three shares using the same host names and share names.
Update Schedule for DNS “A” Records
The CIFS service updates the DNS database as soon as you enter the dynamic-dns
command. It re-registers the “A” record once per day at 1:00 AM (local time),
whenever the ARX reboots or fails over, whenever the VIP for this service changes,
or if ever the VIP or CIFS service is deleted.
To update all DNS records immediately, you can exit to priv-exec mode and use the
dynamic-dns update command:
dynamic-dns update [fqdn]
where fqdn (optional: 1-128 characters) narrows the scope of the update to one
CIFS service. This is the FQDN that identifies the CIFS service and its global
server. If you omit this, the ARX updates all host names for all CIFS services;
this can be network-intensive.
The CLI prompts for confirmation if you choose to update for all CIFS services. Enter
yes to continue.
For example, the following commands exit to priv-exec mode and update all of the
DNS entries for a particular CIFS service, “ac1.medarch.org:”
Clients cannot yet use Kerberos authentication with these DNS aliases; the AD domain
still needs a mapping of these service principal names (SPNs) to the actual FQDN for the
CIFS service. A later section describes a method for supporting aliases with Kerberos.
No further action is required for the CIFS-service FQDN itself. Windows clients can
connect to the service’s FQDN and authenticate with Kerberos without any additional
configuration.