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4.2. Configuring autofs

  1. Edit the /etc/sysconfig/autofs file to specify the schema attributes that autofs searches for: 
    #
# Other common LDAP naming
#
MAP_OBJECT_CLASS="automountMap"
ENTRY_OBJECT_CLASS="automount"
MAP_ATTRIBUTE="automountMapName"
ENTRY_ATTRIBUTE="automountKey"
VALUE_ATTRIBUTE="automountInformation"
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  2. Specify the LDAP configuration. There are two ways to do this. The simplest is to let the automount service discover the LDAP server and locations on its own: 
    LDAP_URI="ldap:///dc=example,dc=com"
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    Alternatively, explicitly set which LDAP server to use and the base DN for LDAP searches: 
    LDAP_URI="ldap://ipa.example.com"
SEARCH_BASE="cn=location,cn=automount,dc=example,dc=com"
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    Note

    The default value for location is default. If additional locations are added, then the client can be pointed to use those locations, instead.
  3. Edit the /etc/autofs_ldap_auth.conf file so that autofs allows client authentication with the IPA LDAP server. Change authrequired to yes and set the principal to the Kerberos host principal: 
    <autofs_ldap_sasl_conf
     usetls="no"
     tlsrequired="no"
     authrequired="yes"
     authtype="GSSAPI"
     clientprinc="host/server.example.com@EXAMPLE COM" 
     />
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    If necessary, run klist -k to get the exact host principal information.
  4. Check the /etc/nssswitch.conf file, so that LDAP is listed as a source for automount configuration: 
    automount: files ldap
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  5. Restart autofs: 
    # service autofs restart
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  6. Test the configuration by listing a user's /home directory: 
    # ls /home/userName
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    If this does not mount the remote file system, check the /var/log/messages file for errors. If necessary, increase the debug level in the /etc/sysconfig/autofs file by setting the LOGGING parameter to debug.

Note

If there are problems with automount, then cross-reference the automount attempts with the 389 Directory Server access logs for the IPA instance, which will show the attempted access, user, and search base.
It is also simple to run automount in the foreground with debug logging on. 
automount -f -d
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This prints the debug log information directly, without having to cross-check the LDAP access log with automount's log.
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