arrayconfig - configure a simple array
arrayconfig [-d] [-i] [-m] [-a arrayname] hostname...
arrayconfig is a tool for configuring a simple array of systems. It can
perform the following tasks:
- Generate an array configuration file (arrayd.conf) containing an array
definition for the nodes in a single array.
- Distribute an array configuration file to the nodes in an array and
activate array services on them.
- Update the "array services machine identifier" on the local system or
all of the systems in the array that support them.
The arrayconfig command itself has several command line options. The
valid options include:
Sets the name of the array that is defined using the -m option. If
this option is not specified, the name "default" is used.
-d (Distribute) Copies the arrayd.conf file on the current system to
each of the systems specified by the hostname arguments, then
activates array services on those systems.
-i (ID) Sets the "array services machine identifier" on the local
machine, or on each of the machines in the array if the -d option
was also specified. This allows the system to generate global array
session handles without contacting the array services daemon, which
improves the startup time for new array sessions. The actual
identifier is formed from the last 15 bits of each machine's host ID
(see hostid(1) for more information). The change does not take
effect until the system has been rebooted. The system must be
running at least version 6.5 of IRIX for this function to work.
-m (Make) Generates an arrayd.conf file containing a single array
definition. The name of the array is taken from the -a option (if
specified). The individual machines in the array are taken from the
hostname arguments, which should specify network hostnames for the
machines. At least one hostname must be specified. The array is
designated as the default destination for all array commands.
Typically the arrayconfig command is only run once, when the array is
first setup. The options can be combined to initialize the array
configuration in a single step if no special requirements exist:
arrayconfig -d -i -m -a MyArray Node1 Node2 Node3 Node4
This sets up an array consisting of four machines (Node1-Node4). The
name of the array is be "MyArray". The resulting configuration file is
copied to all machines in the array, and array services are activated (or
reactivated, if already running) on each machine. Each machine also has
its array services machine identifier set, although the change does not
take effect until each machine has been rebooted.
If it is necessary to make local modifications to the arrayd.conf file
before distributing it to the machines in the array, arrayconfig should
be invoked twice:
arrayconfig -m -a MyArray Node1 Node2 Node3 Node4
(edit /usr/lib/array/arrayd.conf to taste)
arrayconfig -d -i Node1 Node2 Node3 Node4
arrayd(1M), arrayd.conf(4), array_services(5).
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