kinit - obtain and cache Kerberos ticket-granting ticket
[-V] [-l lifetime] [-s start_time] [-r renewable_life] [-p | -P] [-f | -F] [-a] [-A] [-C] [-E] [-v] [-R] [-k [-t keytab_file]] [-c cache_name] [-n] [-S service_name][-T armor_ccache] [-Xattribute[=value]] [principal]
kinit obtains and caches an initial ticket-granting ticket for principal.
display verbose output.
s seconds m minutes h hours d daysas in "kinit -l 90m". You cannot mix units; a value of '3h30m' will result in an error.
If the -l option is not specified, the default ticket lifetime (configured by each site) is used. Specifying a ticket lifetime longer than the maximum ticket lifetime (configured by each site) results in a ticket with the maximum lifetime.
request forwardable tickets.
-F
do not request forwardable tickets.
-p
request proxiable tickets.
-P
do not request proxiable tickets.
-a
request tickets with the local address[es].
-A
request address-less tickets.
-C
requests canonicalization of the principal name.
-E
treats the principal name as an enterprise name.
-v
requests that the ticket granting ticket in the cache (with the invalid flag set) be passed to the kdc for validation. If the ticket is within its requested time range, the cache is replaced with the validated ticket.
-R
requests renewal of the ticket-granting ticket. Note that an expired ticket cannot be renewed, even if the ticket is still within its renewable life.
Requests anonymous processing. Two types of anonymous principals are supported. For fully anonymous Kerberos, configure pkinit on the KDC and configure pkinit_anchors in the client's krb5.conf. Then use the -n option with a principal of the form @REALM (an empty principal name followed by the at-sign and a realm name). If permitted by the KDC, an anonymous ticket will be returned. A second form of anonymous tickets is supported; these realm-exposed tickets hide the identity of the client but not the client's realm. For this mode, use kinit -n with a normal principal name. If supported by the KDC, the principal (but not realm) will be replaced by the anonymous principal. As of release 1.8, the MIT Kerberos KDC only supports fully anonymous operation.
The default credentials cache may vary between systems. If the KRB5CCNAME environment variable is set, its value is used to name the default ticket cache. If a principal name is specified and the type of the default credentials cache supports a collection (such as the DIR type), an existing cache containing credentials for the principal is selected or a new one is created and becomes the new primary cache. Otherwise, any existing contents of the default cache are destroyed by kinit.
The following attributes are recognized by the OpenSSL pkinit pre-authentication mechanism: X509_user_identity=value specify where to find user's X509 identity information X509_anchors=value specify where to find trusted X509 anchor information flag_RSA_PROTOCOL[=yes] specify use of RSA, rather than the default Diffie-Hellman protocol
Kinit uses the following environment variables:
Location of the default Kerberos 5 credentials (ticket) cache, in the form type:residual. If no type prefix is present, the FILE type is assumed. The type of the default cache may determine the availability of a cache collection; for instance, a default cache of type DIR causes caches within the directory to be present in the collection.
default location of Kerberos 5 credentials cache ([uid] is the decimal UID of the user).
/etc/krb5.keytab
default location for the local host's keytab file.