ttproclist - Process a template with a nodelist

torrus ttproclist --tmpl=TFILE --out=OFILE --nodes=NFILE [options...]

This command takes a Template-Toolkit template and a list of nodes (usually SNMP devices) as input. The output file is a result of template substitution, according to the specified options. Command-line options --tmpl, --out and --nodes are mandatory.

This utility can be used to generate the discovery instructions XML out of a predefined template and a dynamically generated list of devices. Alternatively, it can produce Torrus XML configuration for a given list of objects, etc.

The following variables are predefined when the template is processed: Hash array of nodes. Hash keys are the node names. Values are symbolic names. If symbolic names are not defined, values are the same as keys. Hash array of coommand-line parameters given in --param option. Informative variables. They can be used to produce the creation note in the resulting files. CWnodesfile returns the file name of nodes, and CWcreator returns a detailed information how the file was generated, with timestamp and command line options.

--tmpl=TFILE

The file name of the input template. Relative names are looked in the current directory and in /etc/torrus/templates. The file name may also be an absolute path.

--out=OFILE

Output file name. If no absolute path given, the file is written in the current directory.

--nodes=NFILE

The name of the nodes list. Nodes should be separated by space or tab character or newline. Additional information, referred to as symbolic name, can be supplied after a colon, of the form NODENAME:SYMBOLICNAME.

--param=NAME:VALUE,NAME:VALUE...

List of optional parameters that may be used in the template.

The following example gerenates CWdevdiscover input file from a template. The template is as follows:

 <?xml version="1.0" encoding="UTF8"?>
 <snmp-discovery>
 >>> usual DDX parameters here, like SNMP community and data-dir
  <param name="snmp-community" value="private"/>
  <param...
 >>> This loop generates per-host entries
  [% FOREACH n = nodes.keys.sort %]
  <host>
    <param name="snmp-host" value="[% n %]"/>
    <param name="output-file" value="nodes/[% n %].xml"/>
  </host>
  [% END %]
 >>> Generate the bundle file, so that you need only one
 >>> entry in torrus-site-config.pl
  <param name="output-bundle" value="[% param.BUNDLE %].xml"/>
 </snmp-discovery>

The following command would generate MY.ddx from template file MY.ddtmpl as described above. The file MY.nodes is a list of SNMP devices, one per line. Then CWdevdiscover is launched with MY.ddx as input. Note also the short form of the command line wrapper.

 torrus ttproclist --tmpl=MY.ddtmpl \
   --nodes=MY.nodes \
   --out=/usr/local/etc/torrus/discovery/MY.ddx \
   --param=BUNDLE:MYNODES

 torrus dd --in=MY.ddx --verbose

In addition, you may put some common parameters in Template BLOCK statement in a separate file, and INCLUDE it in your templates. See the Template-Toolkit documentation for more detail.

See more documentation at Torrus home page: http://torrus.org

Template-Toolkit documentation: http://template-toolkit.org/

torrus(8), torrus_devdiscover(8)

Stanislav Sinyagin <ssinyagin@yahoo.com>