月度归档： 2017年8月

通过外部系统管理saltstack的pillar

如果你现在已经有了一套资产管理系统, 支持账号权限控制, 能很方便的存放一些key/value. 同时也在使用saltstack进行系统管理. 是不是会觉得如果pillar放在资产管理系统会是一个不错的做法?

 

下面这种方式能够让你在资产管理系统中定义pillar, 然后打通到saltstack.

 

知识点:

在saltstack中, ext_pillar的优先级要比定义在master的pillar/foo.sls中高.

 

saltstack官方提供了一个http_json接口, 但是用起来会有2个不方便的地方:

  1. 不支持账号认证(提了个issue, https://github.com/saltstack/salt/issues/36138 ,还没修)
  2. 不支持只获取某个minion的pillar.

 

这就好说了, 既然有了葫芦, 可以比着画个瓢, 支持这2特性.

1. 增加ops_http_json.py

2. 在salt master上增加配置:

  ext_pillar:
    - ops_http_json:
       url: https://ops.ops.com/assets/salt/%s/pillars/
       username: username
       password: password

ops_http_json.py代码如下:

 

# -*- coding: utf-8 -*-
'''
A module that adds data to the Pillar structure retrieved by an http request


Configuring the HTTP_JSON ext_pillar
====================================

Set the following Salt config to setup http json result as external pillar source:

.. code-block:: yaml
  ext_pillar:
    - http_json:
        url: http://example.com/api/%s
        username: basic username
        password: basic password

Module Documentation
====================
'''

# Import python libs
from __future__ import absolute_import
import logging
import re

# Import Salt libs
try:
    from salt.ext.six.moves.urllib.parse import quote as _quote

    _HAS_DEPENDENCIES = True
except ImportError:
    _HAS_DEPENDENCIES = False

# Set up logging
_LOG = logging.getLogger(__name__)


def __virtual__():
    return _HAS_DEPENDENCIES


def ext_pillar(minion_id,
               pillar,  # pylint: disable=W0613
               url,
               username=None,
               password=None):
    '''
    Read pillar data from HTTP response.

    :param str url: Url to request.
    :param str username: username for basic auth
    :param str password: password for basic auth
    :return: A dictionary of the pillar data to add.
    :rtype: dict
    '''

    url = url.replace('%s', _quote(minion_id))

    _LOG.debug('Getting url: %s', url)

    if username and password:
        data = __salt__['http.query'](url=url, username=username, password=password, decode=True, decode_type='json')
    else:
        data = __salt__['http.query'](url=url, decode=True, decode_type='json')

    if 'dict' in data:
        return data['dict']

    _LOG.error("Error on minion '%s' http query: %s\nMore Info:\n", minion_id, url)

    for key in data:
        _LOG.error('%s: %s', key, data[key])

    return {}