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130 lines
3.2 KiB
ReStructuredText
========================
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Salt 0.9.0 Release Notes
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========================
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Salt 0.9.0 is here. This is an exciting release, 0.9.0 includes the new network
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topology features allowing peer salt commands and masters of masters via the
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syndic interface.
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0.9.0 also introduces many more modules, improvements to the api and
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improvements to the ZeroMQ systems.
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Download!
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---------
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The Salt source can be downloaded from the salt github site:
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:download:`salt-0.9.0.tar.gz`
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Or from PiPy:
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http://pypi.python.org/packages/source/s/salt/salt-0.9.0.tar.gz
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Here is the md5sum:
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9a925da04981e65a0f237f2e77ddab37
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For instructions on how to set up Salt please see the :ref:`installation`
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instructions.
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New Features
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------------
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Salt Syndic
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```````````
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The new Syndic interface allows a master to be commanded via another higher
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level salt master. This is a powerful solution allowing a master control
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structure to exist, allowing salt to scale to much larger levels then before.
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http://saltstack.org/ref/syndic.html
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Peer Communication
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``````````````````
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0.9.0 introduces the capability for a minion to call a publication on the
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master and receive the return from another set of minions. This allows salt
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to act as a communication channel between minions and as a general
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infrastructure message bus.
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Peer communication is turned off by default but can be enabled via the ``peer``
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option in the master configuration file. Documentation on the new peer
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interface can be found here:
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http://saltstack.org/ref/peer.html
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Easily Extensible API
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`````````````````````
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The minion and master classes have been redesigned to allow for specialized
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minion and master servers to be easily created. An example on how this is done
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for the master can be found in the ``master.py`` salt module:
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:blob:`salt/master.py`
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The ``Master`` class extends the ``SMaster`` class and set up the main master
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server.
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The minion functions can now also be easily added to another application via
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the ``SMinion`` class, this class can be found in the ``minion.py`` module:
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:blob:`salt/minion.py`
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Cleaner Key Management
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``````````````````````
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This release changes some of the key naming to allow for multiple master keys
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to be held based on the type of minion gathering the master key.
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The -d option has also been added to the salt-key command allowing for easy
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removal of accepted public keys.
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The --gen-keys option is now available as well for salt-key, this allows
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for a salt specific RSA key pair to be easily generated from the command line.
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Improved 0MQ Master Workers
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```````````````````````````
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The 0MQ worker system has been further refined to be faster and more robust.
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This new system has been able to handle a much larger load than the previous
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setup. The new system uses the ipc protocol in 0MQ instead of tcp.
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New Modules
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-----------
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Quite a few new modules have been made.
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New Minion Modules
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``````````````````
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apache
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~~~~~~
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Work directly with apache servers, great for managing balanced web servers
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cron
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~~~~
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Read out the contents of a systems crontabs
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mdadm
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~~~~~
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Module to manage raid devices in Linux, appears as the ``raid`` module
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mysql
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~~~~~
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Gather simple data from MySQL databases
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ps
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~~
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Extensive utilities for managing processes
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publish
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~~~~~~~
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Used by the peer interface to allow minions to make publications
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