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86 lines
3.5 KiB
ReStructuredText
86 lines
3.5 KiB
ReStructuredText
======================================
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Automatic Updates / Frozen Deployments
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======================================
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.. versionadded:: 0.10.3.d
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Salt has support for the
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`Esky <https://github.com/cloudmatrix/esky>`_ application freezing and update
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tool. This tool allows one to build a complete zipfile out of the salt scripts
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and all their dependencies - including shared objects / DLLs.
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Getting Started
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===============
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To build frozen applications, you'll need a suitable build environment for each
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of your platforms. You should probably set up a virtualenv in order to limit
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the scope of Q/A.
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This process does work on Windows. Follow the directions at
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`<https://github.com/saltstack/salt-windows-install>`_ for details on
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installing Salt in Windows. Only the 32-bit Python and dependencies have been
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tested, but they have been tested on 64-bit Windows.
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You will need to install ``esky`` and ``bbfreeze`` from PyPI in order to enable
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the ``bdist_esky`` command in ``setup.py``.
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Building and Freezing
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=====================
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Once you have your tools installed and the environment configured, you can then
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``python setup.py bdist`` to get the eggs prepared. After that is done, run
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``python setup.py bdist_esky`` to have Esky traverse the module tree and pack
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all the scripts up into a redistributable. There will be an appropriately
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versioned ``salt-VERSION.zip`` in ``dist/`` if everything went smoothly.
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Windows
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-------
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You will need to add ``C:\Python27\lib\site-packages\zmq`` to your PATH
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variable. This helps bbfreeze find the zmq DLL so it can pack it up.
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Using the Frozen Build
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======================
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Unpack the zip file in your desired install location. Scripts like
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``salt-minion`` and ``salt-call`` will be in the root of the zip file. The
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associated libraries and bootstrapping will be in the directories at the same
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level. (Check the `Esky <https://github.com/cloudmatrix/esky>`_ documentation
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for more information)
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To support updating your minions in the wild, put your builds on a web server
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that your minions can reach. :py:func:`salt.modules.saltutil.update` will
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trigger an update and (optionally) a restart of the minion service under the
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new version.
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Gotchas
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=======
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My Windows minion isn't responding
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----------------------------------
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The process dispatch on Windows is slower than it is on \*nix. You may need to
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add '-t 15' to your salt calls to give them plenty of time to return.
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Windows and the Visual Studio Redist
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------------------------------------
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You will need to install the Visual C++ 2008 32-bit redistributable on all
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Windows minions. Esky has an option to pack the library into the zipfile,
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but OpenSSL does not seem to acknowledge the new location. If you get a
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``no OPENSSL_Applink`` error on the console when trying to start your
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frozen minion, you have forgotten to install the redistributable.
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Mixed Linux environments and Yum
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--------------------------------
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The Yum Python module doesn't appear to be available on any of the standard
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Python package mirrors. If you need to support RHEL/CentOS systems, you
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should build on that platform to support all your Linux nodes. Also remember
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to build your virtualenv with ``--system-site-packages`` so that the
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``yum`` module is included.
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Automatic (Python) module discovery
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-----------------------------------
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Automatic (Python) module discovery does not work with the late-loaded scheme that
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Salt uses for (Salt) modules. You will need to explicitly add any
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misbehaving modules to the ``freezer_includes`` in Salt's ``setup.py``.
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Always check the zipped application to make sure that the necessary modules
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were included.
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