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78 lines
1.9 KiB
ReStructuredText
78 lines
1.9 KiB
ReStructuredText
==================
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Master Tops System
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==================
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In 0.10.4 the `external_nodes` system was upgraded to allow for modular
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subsystems to be used to generate the top file data for a highstate run on
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the master.
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The old `external_nodes` option has been removed.
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The master tops system contains a number of subsystems that
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are loaded via the Salt loader interfaces like modules, states, returners,
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runners, etc.
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Using the new `master_tops` option is simple:
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.. code-block:: yaml
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master_tops:
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ext_nodes: cobbler-external-nodes
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for :doc:`Cobbler <../../ref/tops/all/salt.tops.cobbler>` or:
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.. code-block:: yaml
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master_tops:
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reclass:
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inventory_base_uri: /etc/reclass
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classes_uri: roles
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for :doc:`Reclass <../../ref/tops/all/salt.tops.reclass_adapter>`.
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It's also possible to create custom master_tops modules. These modules must go
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in a subdirectory called `tops` in the `extension_modules` directory.
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The `extension_modules` directory is not defined by default (the
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default `/srv/salt/_modules` will NOT work as of this release)
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Custom tops modules are written like any other execution module, see the source
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for the two modules above for examples of fully functional ones. Below is
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a degenerate example:
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/etc/salt/master:
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.. code-block:: yaml
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extension_modules: /srv/salt/modules
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master_tops:
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customtop: True
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/srv/salt/modules/tops/customtop.py:
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.. code-block:: python
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import logging
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import sys
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# Define the module's virtual name
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__virtualname__ = 'customtop'
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log = logging.getLogger(__name__)
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def __virtual__():
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return __virtualname__
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def top(**kwargs):
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log.debug('Calling top in customtop')
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return {'base': ['test']}
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`salt minion state.show_top` should then display something like:
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.. code-block:: bash
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$ salt minion state.show_top
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minion
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----------
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base:
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- test
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