KVNO - Online Linux Manual PageSection : 1
Updated :
Source : 1.19.2
Note : MIT Kerberos
NAMEkvno − print key version numbers of Kerberos principals
SYNOPSISkvno [−c ccache] [−e etype] [−k keytab] [−q] [−u | −S sname] [−P] [−−cached−only] [−−no−store] [−−out−cache cache] [[{−F cert_file | {−I | −U} for_user} [−P]] | −−u2u ccache] service1 service2 ...
DESCRIPTIONkvno acquires a service ticket for the specified Kerberos principals and prints out the key version numbers of each.
OPTIONS −c ccache  Specifies the name of a credentials cache to use (if not the default) −e etype  Specifies the enctype which will be requested for the session key of all the services named on the command line. This is useful in certain backward compatibility situations. −k keytab  Decrypt the acquired tickets using keytab to confirm their validity. −q  Suppress printing output when successful. If a service ticket cannot be obtained, an error message will still be printed and kvno will exit with nonzero status. −u  Use the unknown name type in requested service principal names. This option Cannot be used with −S​. −P  Specifies that the service1 service2 ... arguments are to be treated as services for which credentials should be acquired using constrained delegation. This option is only valid when used in conjunction with protocol transition. −S sname  Specifies that the service1 service2 ... arguments are interpreted as hostnames, and the service principals are to be constructed from those hostnames and the service name sname​. The service hostnames will be canonicalized according to the usual rules for constructing service principals. −I for_user  Specifies that protocol transition (S4U2Self) is to be used to acquire a ticket on behalf of for_user​. If constrained delegation is not requested, the service name must match the credentials cache client principal. −U for_user  Same as −I, but treats for_user as an enterprise name. −F cert_file  Specifies that protocol transition is to be used, identifying the client principal with the X.509 certificate in cert_file​. The certificate file must be in PEM format. −−cached−only  Only retrieve credentials already present in the cache, not from the KDC. (Added in release 1.19.) −−no−store  Do not store retrieved credentials in the cache. If −−out−cache is also specified, credentials will still be stored into the output credential cache. (Added in release 1.19.) −−out−cache ccache  Initialize ccache and store all retrieved credentials into it. Do not store acquired credentials in the input cache. (Added in release 1.19.) −−u2u ccache  Requests a user−to−user ticket. ccache must contain a local krbtgt ticket for the server principal. The reported version number will typically be 0, as the resulting ticket is not encrypted in the server's long−term key.
ENVIRONMENTSee kerberos(7) for a description of Kerberos environment variables.
FILES FILE:/tmp/krb5cc_%{uid}  Default location of the credentials cache
SEE ALSOkinit(1), kdestroy(1), kerberos(7)
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