catalog_update - send update to catalog server


catalog_update [options] [name=value] ..


The catalog_update tool allows users to manually send an update to a catalog server via TCP or UDP.


  • -c,--catalog=<host>
    Send update to this catalog host.
  • -f,--file=<json-file>
    Send additional JSON attributes in this file.
  • -d,--debug=<flags>
    Enable debug flags.
  • -o,--debug-file=<file>
    Send debug output to this file.
  • -v <version>
    Show software version.
  • -h <help>
    Show all options.

The catalog_update tool sends a custom message to the catalog server in the from of a JSON object with various properties describing the host. By default, the catalog_update tool includes the following fields in the update:

  • type This describes the node type (default is "node").
  • version This is the version of CCTools.
  • cpu This is CPU architecture of the machine.
  • opsys This is operating system of the machine.
  • opsysversion This is operating system version of the machine.
  • load1 This is 1-minute load of the machine.
  • load5 This is 5-minute load of the machine.
  • load15 This is 15-minute load of the machine.
  • memory_total This is total amount of memory on the machine
  • memory_avail This is amount of available memory on the machine
  • cpus This is number of detected CPUs on the machine.
  • uptime This how long the machine has been running.
  • owner This is user who sent the update.

The field name is intended to give a human-readable name to a service or application which accepts incoming connections at port.


  • CATALOG_HOST Hostname of catalog server (same as -c).


On success, returns zero. On failure, returns non-zero.


The following example sends an update to the catalog server located at with three custom fields.

% cat > test.json << EOF
    "type" : "node",
    "has_java" : true,
    "mode" : 3
% catalog_update -c -f test.json

The Cooperative Computing Tools are Copyright (C) 2022 The University of Notre Dame. This software is distributed under the GNU General Public License. See the file COPYING for details.