NAME

kcm — process-based credential cache for Kerberos tickets.

SYNOPSIS

DESCRIPTION

kcm is a process based credential cache. To use it, set the KRB5CCNAME enviroment variable to ‘KCM:uid’ or add the stanza

[libdefaults]
        default_cc_name = KCM:%{uid}

The kcm daemon can hold the credentials for all users in the system. Access control is done with Unix-like permissions. The daemon checks the access on all operations based on the uid of the user. The tickets are renewed as long as is permitted by the KDC's policy.

The kcm daemon can also keep a SYSTEM credential that server processes can use to access services. One example of usage might be an nss_ldap module that quickly needs to get credentials and doesn't want to renew the ticket itself.

Supported options:

--cache-name=cachename

system cache name

-c file, --config-file=file

location of config file

-g group, --group=group

system cache group

--max-request=size

max size for a kcm-request

--disallow-getting-krbtgt

disallow extracting any krbtgt from the

--use-uid-matching

use uid only to determine if a user can access a credential or not kcm daemon.

--detach

detach from console

-h, --help

 

-k principal, --system-principal=principal

system principal name

-l time, --lifetime=time

lifetime of system tickets

-n, --no-name-constraints

disable credentials cache name constraints

-r time, --renewable-life=time

renewable lifetime of system tickets

-s path, --socket-path=path

path to kcm domain socket

--door-path=path

path to kcm door socket

-S principal, --server=principal

server to get system ticket for

-t keytab, --keytab=keytab

system keytab name

-u user, --user=user

system cache owner

-v, --version