NFS Services Administrator's Guide (B.11.31.04) March 2009

#
# Kerberos configuration
# This krb5.conf file is intended as an example only.
# see krb5.conf(4) for more details
# hostname is the fully qualified hostname(FQDN) of host on
which kdc is running
# domain_name is the fully qualified name of your domain
[libdefaults]
default_realm = krbhost.anyrealm.com
default_tkt_enctypes = DES-CBC-CRC
default_tgs_enctypes = DES-CBC-CRC
ccache_type = 2
[realms]
krbhost.anyrealm.com = {
kdc = krbhost.anyrealm.com:88
admin_server = krbhost.anyrealm.com
}
[domain_realm]
.anyrealm.com = krbhost.anyrealm.com
[logging]
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmin.log
default = FILE:/var/log/krb5lib.log
• The user who is trying to access the mounted filesystem has not obtained a TGT
using their login.
For example, if you are a guest user and are attempting to access the NFS mounted
filesystem with Kerberos security option, you need to have a TGT.
To identify the default principal name, enter the following command:
klist
If the default principal name is not ‘guest’, enter the following command to obtain
a TGT for the guest principal:
kinit guest
Performance Tuning
This section gives suggestions for identifying performance problems in your network
and improving NFS performance on your servers and clients. This section addresses
the following topics:
• “Diagnose NFS Performance Problems” (page 135)
• “Improve NFS Server Performance” (page 136)
• “Improving NFS Client Performance” (page 137)
Diagnose NFS Performance Problems
1. Enter the following command on several of your NFS clients:
Performance Tuning 135