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Man Pages


Manual Reference Pages  -  KINIT (1)

NAME

kinit - acquire initial tickets

CONTENTS

Synopsis
Description
Environment
See Also

SYNOPSIS

kinit [-afslog] [-c cachename | Xo -cache= cachename ] [-f-| -no-forwardable ] [-t keytabname | Xo -keytab= keytabname ] [-l time | Xo -lifetime= time ] [-p-| -proxiable ] [-R-| -renew ] [-renewable] [-r time | Xo -renewable-life= time ] [-S principal | Xo -server= principal ] [-s time | Xo -start-time= time ] [-k-| -use-keytab ] [-v-| -validate ] [-e enctypes | Xo -enctypes= enctypes ] [-a addresses | Xo -extra-addresses= addresses ] [-password-file=filename] [-fcache-version=version-number] [-A-| -no-addresses ] [-anonymous] [-enterprise] [-version] [-help] [principal [command]]

DESCRIPTION

kinit is used to authenticate to the Kerberos server as principal, or if none is given, a system generated default (typically your login name at the default realm), and acquire a ticket granting ticket that can later be used to obtain tickets for other services.

Supported options:
-c cachename-cache= cachename
  The credentials cache to put the acquired ticket in, if other than default.
-f -no-forwardable
  Get ticket that can be forwarded to another host, or if the negative flags use, don’t get a forwardable flag.
-t keytabname,-keytab= keytabname
  Don’t ask for a password, but instead get the key from the specified keytab.
-l time,-lifetime= time
  Specifies the lifetime of the ticket. The argument can either be in seconds, or a more human readable string like '1h'.
-p -, -proxiable
  Request tickets with the proxiable flag set.
-R -, -renew
  Try to renew ticket. The ticket must have the 'renewable' flag set, and must not be expired.
-renewable
  The same as -renewable-life , with an infinite time.
-r time,-renewable-life= time
  The max renewable ticket life.
-S principal,-server= principal
  Get a ticket for a service other than krbtgt/LOCAL.REALM.
-s time,-start-time= time
  Obtain a ticket that starts to be valid time (which can really be a generic time specification, like '1h') seconds into the future.
-k -, -use-keytab
  The same as -keytab , but with the default keytab name (normally FILE:/etc/krb5.keytab).
-v -, -validate
  Try to validate an invalid ticket.
-e -, -enctypes= enctypes
  Request tickets with this particular enctype.
-password-file= filename
  read the password from the first line of filename. If the filename is STDIN, the password will be read from the standard input.
-fcache-version= version-number
  Create a credentials cache of version version-number.
-a -, -extra-addresses= enctypes
  Adds a set of addresses that will, in addition to the systems local addresses, be put in the ticket. This can be useful if all addresses a client can use can’t be automatically figured out. One such example is if the client is behind a firewall. Also settable via libdefaults/extra_addresses in krb5.conf(5).
-A -, -no-addresses
  Request a ticket with no addresses.
-anonymous
  Request an anonymous ticket (which means that the ticket will be issued to an anonymous principal, typically "anonymous@REALM").
-enterprise
  Parse principal as a enterprise (KRB5-NT-ENTERPRISE) name. Enterprise names are email like principals that are stored in the name part of the principal, and since there are two @ characters the parser needs to know that the first is not a realm. An example of an enterprise name is "lha@e.kth.se@KTH.SE", and this option is usually used with canonicalize so that the principal returned from the KDC will typically be the real principal name.
-afslog
  Gets AFS tickets, converts them to version 4 format, and stores them in the kernel. Only useful if you have AFS.

The forwardable, proxiable, ticket_life, and renewable_life options can be set to a default value from the appdefaults section in krb5.conf, see krb5_appdefault(3).

If a command is given, kinit will set up new credentials caches, and AFS PAG, and then run the given command. When it finishes the credentials will be removed.

ENVIRONMENT

KRB5CCNAME
  Specifies the default credentials cache.
KRB5_CONFIG
  The file name of krb5.conf, the default being /etc/krb5.conf.
KRBTKFILE
  Specifies the Kerberos 4 ticket file to store version 4 tickets in.

SEE ALSO

kdestroy(1), klist(1), krb5_appdefault(3), krb5.conf(5)
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