daemon: Avoid 'Could not find keytab file' in syslog

On F17 at least, every time libvirtd starts we get this in syslog:

libvirtd: Could not find keytab file: /etc/libvirt/krb5.tab: No such file or directory

This comes from cyrus-sasl, and happens regardless of whether the
gssapi plugin is requested, which is what actually uses
/etc/libvirt/krb5.tab.

While cyrus-sasl shouldn't complain, we can easily make it shut up by
commenting out the keytab value by default.

Also update the keytab comment to the more modern one from qemu's
sasl config file.
(cherry picked from commit fe772f24a6)
This commit is contained in:
Cole Robinson 2012-10-20 14:10:03 -04:00
parent dd2f524c6b
commit b520cf07f0
2 changed files with 8 additions and 4 deletions

View File

@ -18,9 +18,12 @@ mech_list: digest-md5
# qemu+tcp://hostname/system?auth=sasl.gssapi
#mech_list: digest-md5 gssapi
# MIT kerberos ignores this option & needs KRB5_KTNAME env var.
# May be useful for other non-Linux OS though....
keytab: /etc/libvirt/krb5.tab
# Some older builds of MIT kerberos on Linux ignore this option &
# instead need KRB5_KTNAME env var.
# For modern Linux, and other OS, this should be sufficient
#
# There is no default value here, uncomment if you need this
#keytab: /etc/libvirt/krb5.tab
# If using digest-md5 for username/passwds, then this is the file
# containing the passwds. Use 'saslpasswd2 -a libvirt [username]'

View File

@ -233,7 +233,8 @@ The SASL mechanism configured by default is DIGEST-MD5, which provides a basic
username+password style authentication. To enable Kerberos single-sign-on instead,
the libvirt SASL configuration file must be changed. This is <code>/etc/sasl2/libvirt.conf</code>.
The <code>mech_list</code> parameter must first be changed to <code>gssapi</code>
instead of the default <code>digest-md5</code>. If SASL is enabled on the UNIX
instead of the default <code>digest-md5</code>, and keytab should be set to
<code>/etc/libvirt/krb5.tab</code> . If SASL is enabled on the UNIX
and/or TLS sockets, Kerberos will also be used for them. Like DIGEST-MD5, the Kerberos
mechanism provides data encryption of the session.
</p>