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173 lines
5.4 KiB
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==============
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salt-api 0.8.0
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==============
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We are happy to announce the release of :program:`salt-api` 0.8.0.
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This release encompasses bugfixes and new features for the
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:py:mod:`rest_cherrypy <salt.netapi.rest_cherrypy.app>` netapi module that
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provides a RESTful interface for a running Salt system.
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.. note::
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Requires Salt 0.13
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Changes
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=======
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In addition to the usual documentation improvements and bug fixes this release
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introduces the following changes and additions.
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Please note the backward incompatible change detailed below.
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RPM packaging
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-------------
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Thanks to Andrew Niemantsvedriet (`@kaptk2`_) :program:`salt-api` is now
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available in Fedora package repositories as well as RHEL compatible systems via
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EPEL.
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* http://dl.fedoraproject.org/pub/epel/5/i386/repoview/salt-api.html
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* http://dl.fedoraproject.org/pub/epel/5/x86_64/repoview/salt-api.html
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* http://dl.fedoraproject.org/pub/epel/6/i386/repoview/salt-api.html
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* http://dl.fedoraproject.org/pub/epel/6/x86_64/repoview/salt-api.html
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Thanks also to Clint Savage (`@herlo`_) and Thomas Spura (`@tomspur`_) for
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helping with that process.
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.. _`@kaptk2`: https://github.com/kaptk2
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.. _`@herlo`: https://github.com/herlo
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.. _`@tomspur`: https://github.com/tomspur
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Ubuntu PPA packaging
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--------------------
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Thanks to Sean Channel (`@seanchannel`_, pentabular) :program:`salt-api` is
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available as a PPA on the SaltStack LaunchPad team.
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https://launchpad.net/~saltstack/+archive/salt
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.. _`@seanchannel`: https://github.com/seanchannel
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Authentication information on login
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-----------------------------------
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.. warning:: Backward incompatible change
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The :py:class:`/login <salt.netapi.rest_cherrypy.app.Login>` URL no
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longer responds with a 302 redirect for success.
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Although this is behavior is common in the browser world it is not useful
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from an API so we have changed it to return a 200 response in this release.
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We take backward compatibility very seriously and we apologize for the
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inconvenience. In this case we felt the previous behavior was limiting.
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Changes such as this will be rare.
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New in this release is displaying information about the current session and the
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current user. For example:
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.. code-block:: bash
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% curl -sS localhost:8000/login \
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-H 'Accept: application/x-yaml'
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-d username='saltdev'
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-d password='saltdev'
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-d eauth='pam'
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return:
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- eauth: pam
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expire: 1365508324.359403
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perms:
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- '@wheel'
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- grains.*
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- state.*
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- status.*
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- sys.*
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- test.*
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start: 1365465124.359402
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token: caa7aa2b9dbc4a8adb6d2e19c3e52be68995ef4b
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user: saltdev
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Bypass session handling
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-----------------------
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A convenience URL has been added
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(:py:class:`/run <salt.netapi.rest_cherrypy.app.Run>`) to bypass the normal
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session-handling process.
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The REST interface uses the concept of "lowstate" data to specify what function
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should be executed in Salt (plus where that function is and any arguments to
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the function). This is a thin wrapper around Salt's various "client"
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interfaces, for example Salt's :ref:`LocalClient() <python-api>` which can
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accept authentication credentials directly.
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Authentication with the REST API typically goes through the login URL and a
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session is generated that is tied to a Salt external_auth token. That token is
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then automatically added to the lowstate for subsequent requests that match the
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current session.
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It is sometimes useful to handle authentication or token management manually
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from another program or script. For example:
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.. code-block:: bash
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curl -sS localhost:8000/run \
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-d client='local' \
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-d tgt='*' \
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-d fun='test.ping' \
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-d eauth='pam' \
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-d username='saltdev' \
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-d password='saltdev'
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It is a Bad Idea (TM) to do this unless you have a very good reason and a well
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thought out security model.
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Logout
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------
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An URL has been added
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(:py:class:`/logout <salt.netapi.rest_cherrypy.app.Logout>`) that will cause
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the client-side to expire the session cookie and the server-side session to be
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invalidated.
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Running the REST interface via any WSGI-compliant server
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--------------------------------------------------------
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The :py:mod:`rest_cherrypy <salt.netapi.rest_cherrypy.app>` netapi module is
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a regular WSGI application written using the CherryPy framework. It was written
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with the intent of also running from any WSGI-compliant server such as Apache
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and mod_wsgi, Gunicorn, uWSGI, Nginx and FastCGI, etc.
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The WSGI application entry point has been factored out into a stand-alone file
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in this release suitable for calling from an external server.
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:program:`salt-api` does not need to be running in this scenario.
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For example, an Apache virtual host configuration:
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.. code-block:: text
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<VirtualHost *:80>
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ServerName example.com
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ServerAlias *.example.com
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ServerAdmin webmaster@example.com
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LogLevel warn
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ErrorLog /var/www/example.com/logs/error.log
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CustomLog /var/www/example.com/logs/access.log combined
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DocumentRoot /var/www/example.com/htdocs
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WSGIScriptAlias / /path/to/salt/netapi/rest_cherrypy/wsgi.py
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</VirtualHost>
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Participation
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=============
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Please get involved by `filing issues`__ on GitHub, `discussing on the mailing
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list`__, and chatting in ``#salt-devel`` on Freenode.
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.. __: https://github.com/saltstack/salt-api/issues
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.. __: https://groups.google.com/forum/#!forum/salt-users
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