ascheck(1) ascheck(1)
ascheck - validate the array services configuration
ascheck [ -F ] [ -Kl key ] [ -Kr key ] [ -p port ] [ -q ]
[ -s server [ -D ] ] [ -t value ]
ascheck validates the configuration on all the array services daemons
known to the local array services daemon. Checks are made to ensure that
the various array and machine definitions are consistent with each other,
both on the individual servers and with corresponding definitions on the
other servers. If any problems are found, they are described in detail
and suggestions are provided to correct the situation.
It should be noted that ascheck is not a syntax checker for the
individual array services configuration files; that function is handled
by the -c option of arrayd(1M). Instead, ascheck is used to check the
semantics of a syntactically correct array services configuration file.
ascheck relies on information provided by array services. Thus, for
complete coverage, an array services daemon should be running on every
machine that is mentioned in the local configuration file(s).
The checks that ascheck makes include:
* Ensuring that the local array services daemon is accessible.
* Verifying that all of the array services daemons known to the local
daemon are also available.
* Ensuring that each array services daemon is using the correct version
of the array services library.
* Ensuring that the LOCAL IDENT value used by a particular array
services daemon is not different from the "machine ID" used by the OS
on that daemon's machine.
* Suggesting that a "machine ID" be set in the OS on those systems that
have an array services daemon but have not yet set a machine ID.
* Ensuring that no two arrays on a particular server have the same ARRAY
IDENT value.
* Ensuring that the SERVER IDENT value which may be declared for a
particular ARRAY/MACHINE definition matches the LOCAL IDENT value of
the corresponding server.
* Warning if the list of machines defined for a particular array does
not match the list of machines for an array with the same name on a
different server.
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ascheck(1) ascheck(1)
* Warning about any server that has two or more arrays defined but has
not specified a default array.
ascheck takes several options, primarily to control the selection of the
"local" server, and to select the desired amount of output. The valid
options include:
-D When used with -s, indicates that array services requests
should sent directly to the specified server, rather than
being forwarded to that server by the array services daemon
running on the current machine. This is the default
behavior.
-F When used with -s, indicates that array services requests
should be forwarded to the specified server via the server on
the current machine rather than sent directly.
-Kl key Use key for the local authentication key when communicating
directly with a remote array services daemon.
-Kr key Use key for the remote authentication key when communicating
directly with a remote array services daemon.
-p port Specifies the port address of the "local" arrayd server.
Defaults to the value of the ARRAYD_PORT environment variable
if present, or 5434 otherwise.
-q Produce less verbose ("quieter") output. Repeated
occurrences (either -q -q ... or -qq ...) may decrease the
verbosity further.
-s server Specifies the hostname or IP address of the "local" arrayd
server. Defaults to the value of the ARRAYD environment
variable if present, or "localhost" otherwise.
-t value Specifies the timeout value (in seconds) used for waiting on
individual responses from the array daemon.
The array services daemon (arrayd(1M)) must be running on all machines
that are to be examined. It does not necessarily have to be running on
the machine that executes ascheck if an alternate server was specified in
some way.
arrayd(1M), arrayd.conf(4).
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