nis_cachemgr(1M) System Administration Commands nis_cachemgr(1M)NAMEnis_cachemgr - NIS+ utility to cache location information about NIS+
servers
SYNOPSIS
/usr/sbin/nis_cachemgr [-i] [-v]
DESCRIPTION
The nis_cachemgr daemon maintains a cache of NIS+ directory objects and
active servers for domains. It is responsible for locating servers for
a domain on behalf of client processes. This improves performance
because only one process has to search for servers. The cache contains
location information necessary to contact the NIS+ servers. This
includes transport addresses, information neeeded to authenticate the
server, and a time to live field which gives a hint on how long the
directory object can be cached. The cache helps to improve the perfor‐
mance of the clients that are traversing the NIS+ name space.
nis_cachemgr should be running on all the machines that are using NIS+.
However, it is not required that the nis_cachemgr program be running in
order for NIS+ requests to be serviced.
The cache maintained by this program is shared by all the processes
that access NIS+ on a machine. The cache is maintained in a file that
is memory mapped by all the processes. See mmap(2). On start up,
nis_cachemgr initializes the cache from the cold start file and pre‐
serves unexpired entries that already exist in the cache file. See
nisinit(1M). Thus, the cache survives machine reboots.
The nis_cachemgr program is normally started from a system startup
script. nisshowcache(1M) can be used to look at the cached objects and
active servers.
The nisprefadm(1M) command can be used to control which NIS+ servers
the nis_cachemgr program will try to select.
The nis_cachemgr program makes NIS+ requests under the NIS+ principal
name of the host on which it runs. Before running nis_cachemgr, secu‐
rity credentials for the host should be added to the cred.org_dir table
in the host's domain using nisaddcred(1M). Credentials of type DES will
be needed if the NIS+ service is operating at security level 2 (see
rpc.nisd(1M)). See the section, below. Additionally, a "keylogin -r "
should be done on the machine.
svc:/network/rpc/keyserv:default is required for NIS+ operation. See
NOTES.
OPTIONS-i Force nis_cachemgr to ignore the previous cache file and reini‐
tialize the cache from just the cold start file. By default, the
cache manager initializes itself from both the cold start file
and the old cache file, thereby maintaining the entries in the
cache across machine reboots.
-v This flag sets verbose mode. In this mode, the nis_cachemgr pro‐
gram logs not only errors and warnings, but also additional sta‐
tus messages. The additional messages are logged using syslog(3C)
with a priority of LOG_INFO.
FILES
/var/nis/NIS_SHARED_DIRCACHE
the shared cache file
/var/nis/NIS_COLD_START
the coldstart file
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWcsu │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOkeylogin(1), svcs(1), nisaddcred(1M), nisinit(1M), nisprefadm(1M), nis‐
showcache(1M), rpc.nisd(1M), svcadm(1M), mmap(2), rpc(3NSL), sys‐
log(3C), nisfiles(4), attributes(5), smf(5)DIAGNOSTICS
The nis_cachemgr daemon logs error messages and warnings using sys‐
log(3C). Error messages are logged to the DAEMON facility with a prior‐
ity of LOG_ERR . Warning messages are logged with a priority of
LOG_WARNING. Additional status messages can be obtained using the -v
option.
NOTES
NIS+ might not be supported in future releases of the Solaris operating
system. Tools to aid the migration from NIS+ to LDAP are available in
the current Solaris release. For more information, visit
http://www.sun.com/directory/nisplus/transition.html.
The nis_cachemgr service is managed by the service management facility,
smf(5), under the service identifier:
svc:/network/rpc/nisplus:default
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using svcadm(1M). The service's
status can be queried using the svcs(1) command.
SunOS 5.10 13 Aug 2004 nis_cachemgr(1M)
