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idmapd.conf(5) File Formats Manual idmapd.conf(5)
NAME
idmapd.conf
SYNOPSIS
Configuration file for libnfsidmap. Used by idmapd and svcgssd to map
NFSv4 name to and from ids.
DESCRIPTION
The idmapd.conf configuration file consists of several sections, initi-
ated by strings of the form [General] and [Mapping]. Each section may
contain lines of the form
variable = value
The recognized sections and their recognized variables are as follows:
[General] section variables
Verbosity
Verbosity level of debugging (Default: 0)
Domain The local NFSv4 domain name. An NFSv4 domain is a namespace
with a unique username<->UID and groupname<->GID mapping.
(Default: Host's fully-qualified DNS domain name)
Local-Realms
A comma-separated list of Kerberos realm names that may be con-
sidered equivalent to the local realm name. For example, users
juser@ORDER.EDU and juser@MAIL.ORDER.EDU may be considered to be
the same user in the specified Domain. (Default: the host's
default realm name)
Note: If a value is specified here, the default local realm must
be included as well.
[Mapping] section variables
Nobody-User
Local user name to be used when a mapping cannot be completed.
Nobody-Group
Local group name to be used when a mapping cannot be completed.
[Translation] section variables
Method A comma-separated, ordered list of mapping methods (plug-ins) to
use when mapping between NFSv4 names and local IDs. Each speci-
fied method is tried in order until a mapping is found, or there
are no more methods to try. The methods included in the default
distribution include "nsswitch", "umich_ldap", and "static".
(Default: nsswitch)
GSS-Methods
An optional comma-separated, ordered list of mapping methods
(plug-ins) to use when mapping between GSS Authenticated names
and local IDs. (Default: the same list as specified for Method)
[Static] section variables
The "static" translation method uses a static list of GSS-Authenticated
names to local user names. Entries in the list are of the form:
principal@REALM = localusername
[UMICH_SCHEMA] section variables
If the "umich_ldap" translation method is specified, the following
variables within the [UMICH_SCHEMA] section are used.
LDAP_server
LDAP server name or address (Required if using UMICH_LDAP)
LDAP_base
Absolute LDAP search base. (Required if using UMICH_LDAP)
LDAP_people_base
Absolute LDAP search base for people accounts. (Default: The
LDAP_base value)
LDAP_group_base
Absolute LDAP search base for group accounts. (Default: The
LDAP_base value)
LDAP_canonicalize_name
Whether or not to perform name canonicalization on the name
given as LDAP_server (Default: "true")
LDAP_use_ssl
Set to "true" to enable SSL communication with the LDAP server.
(Default: "false")
LDAP_ca_cert
Location of a trusted CA certificate used when SSL is enabled
(Required if LDAP_use_ssl is true)
NFSv4_person_objectclass
The object class name for people accounts in your local LDAP
schema (Default: NFSv4RemotePerson)
NFSv4_name_attr
Your local schema's attribute name to be used for NFSv4 user
names (Default: NFSv4Name)
NFSv4_uid_attr
Your local schema's attribute name to be used for uidNumber
(Default: uidNumber)
GSS_principal_attr
Your local schema's attribute name for GSSAPI Principal names
(Default: GSSAuthName)
NFSv4_acctname_attr
Your local schema's attribute name to be used for account names
(Default: uid)
NFSv4_group_objectclass
The object class name for group accounts in your local LDAP
schema (Default: NFSv4RemoteGroup)
NFSv4_gid_attr
Your local schema's attribute name to be used for gidNumber
(Default: gidNumber)
NFSv4_group_attr
Your local schema's attribute name to be used for NFSv4 group
names (Default: NFSv4Name)
LDAP_use_memberof_for_groups
Some LDAP servers do a better job with indexing where searching
through all the groups searching for the user in the memberuid
list. Others like SunOne directory that search can takes min-
utes if there are thousands of groups. So setting LDAP_use_mem-
berof_for_groups to true in the configuration file will use the
memberof lists of the account and search through only those
groups to obtain gids. (Default: false)
NFSv4_member_attr
If LDAP_use_memberof_for_groups is true, this is the attribute
to be searched for. (Default: memberUid)
NFSv4_grouplist_filter
An optional search filter for determining group membership. (No
Default)
LDAP_timeout_seconds
Number of seconds before timing out an LDAP request (Default: 4)
EXAMPLES
An example /etc/idmapd.conf file:
[General]
Verbosity = 0
Domain = domain.org
Local-Realms = DOMAIN.ORG,MY.DOMAIN.ORG,YOUR.DOMAIN.ORG
[Mapping]
Nobody-User = nfsnobody
Nobody-Group = nfsnobody
[Translation]
Method = umich_ldap,nsswitch
GSS-Methods = umich_ldap,static
[Static]
johndoe@OTHER.DOMAIN.ORG = johnny
[UMICH_SCHEMA]
LDAP_server = ldap.domain.org
LDAP_base = dc=org,dc=domain
SEE ALSO
idmapd(8) svcgssd(8)
BUGS
Report bugs to <nfsv4@linux-nfs.org>
19 Nov 2008 idmapd.conf(5)
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