服务配置文件gb2312编码，使用SaltStack管理报错
Salt发布2014.7.0后，及时进行了更新，测试下来，在上一版本正常运行的操作，这一版本却出现报错。公司的好多服务由于历史原因，配置文件延续下来，使用的是gb2312编码，其中还有中文注释。在使用salt进行管理的时候，在Master端会报UnicodeDecodeError错误。 执行配置文件更新，并重启服务操作：1
salt 'zhaogb-202' state.sls update_conf.manager
manager.sls是更新Manager服务配置文件的模板：
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ma_watch:
service:
- name: ManagerServerd
- running
- reload: True
- watch:
- file: /home/ManagerServer/config.xml
/home/ManagerServer/config.xml:
file.managed:
- source: salt://dzh_store/conf_file/ManagerServer/config.xml
- user: root
- group: root
- mode: 644
- backup: minion
执行该更新操作后，会报如下错误：
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An un-handled exception was caught by salt's global exception handler:
UnicodeDecodeError: 'utf8' codec can't decode byte 0xca in position 18: invalid continuation byte
Traceback (most recent call last):
File "/usr/bin/salt", line 10, in <module>
salt_main()
File "/usr/lib/python2.6/site-packages/salt/scripts.py", line 240, in salt_main
client.run()
File "/usr/lib/python2.6/site-packages/salt/cli/__init__.py", line 189, in run
self._output_ret(ret_, out)
File "/usr/lib/python2.6/site-packages/salt/cli/__init__.py", line 243, in _output_ret
salt.output.display_output(ret, out, self.config)
File "/usr/lib/python2.6/site-packages/salt/output/__init__.py", line 44, in display_output
display_data = get_printout(out, opts)(data).rstrip()
File "/usr/lib/python2.6/site-packages/salt/output/highstate.py", line 74, in output
return _format_host(host, hostdata)
File "/usr/lib/python2.6/site-packages/salt/output/highstate.py", line 118, in _format_host
schanged, ctext = _format_changes(ret['changes'])
File "/usr/lib/python2.6/site-packages/salt/output/highstate.py", line 340, in _format_changes
__opts__)
File "/usr/lib/python2.6/site-packages/salt/output/__init__.py", line 121, in out_format
return get_printout(out, opts)(data).rstrip()
File "/usr/lib/python2.6/site-packages/salt/output/nested.py", line 124, in output
return nest.display(ret, __opts__.get('nested_indent', 0), '', '')
File "/usr/lib/python2.6/site-packages/salt/output/nested.py", line 115, in display
out = self.display(val, indent + 4, '', out)
File "/usr/lib/python2.6/site-packages/salt/output/nested.py", line 90, in display
prefix=prefix)
File "/usr/lib/python2.6/site-packages/salt/output/nested.py", line 59, in ustring
indent, color, prefix, msg.decode(encoding), endc, suffix)
File "/usr/lib64/python2.6/encodings/utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xca in position 18: invalid continuation byte
Traceback (most recent call last):
File "/usr/bin/salt", line 10, in <module>
salt_main()
File "/usr/lib/python2.6/site-packages/salt/scripts.py", line 240, in salt_main
client.run()
File "/usr/lib/python2.6/site-packages/salt/cli/__init__.py", line 189, in run
self._output_ret(ret_, out)
File "/usr/lib/python2.6/site-packages/salt/cli/__init__.py", line 243, in _output_ret
salt.output.display_output(ret, out, self.config)
File "/usr/lib/python2.6/site-packages/salt/output/__init__.py", line 44, in display_output
display_data = get_printout(out, opts)(data).rstrip()
File "/usr/lib/python2.6/site-packages/salt/output/highstate.py", line 74, in output
return _format_host(host, hostdata)
File "/usr/lib/python2.6/site-packages/salt/output/highstate.py", line 118, in _format_host
schanged, ctext = _format_changes(ret['changes'])
File "/usr/lib/python2.6/site-packages/salt/output/highstate.py", line 340, in _format_changes
__opts__)
File "/usr/lib/python2.6/site-packages/salt/output/__init__.py", line 121, in out_format
return get_printout(out, opts)(data).rstrip()
File "/usr/lib/python2.6/site-packages/salt/output/nested.py", line 124, in output
return nest.display(ret, __opts__.get('nested_indent', 0), '', '')
File "/usr/lib/python2.6/site-packages/salt/output/nested.py", line 115, in display
out = self.display(val, indent + 4, '', out)
File "/usr/lib/python2.6/site-packages/salt/output/nested.py", line 90, in display
prefix=prefix)
File "/usr/lib/python2.6/site-packages/salt/output/nested.py", line 59, in ustring
indent, color, prefix, msg.decode(encoding), endc, suffix)
File "/usr/lib64/python2.6/encodings/utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xca in position 18: invalid continuation byte
执行返回报错，但是Minion端配置文件已经更新，并且服务重启载入新的配置文件。也就是说，这个报错产生在Master端，对Minion没有影响。所有操作都在上一个版本（2014.1.0）验证过，没有任何问题。排查下来，找到
/usr/lib/python2.6/site-packages/salt/output/nested.py
这个文件，与上一个版本相比，增加了一个ustring方法,其中定义了一个带默认值encoding='utf-8'参数，问题就出现在这里。
2014.7.0 nested.py
由于我的配置文件采用gb2312编码，所以在对msg进行decode操作时使用utf-8会报错，再增加一个try,except调试来解决这个问题，修改后的代码如下：
也就是修改了except，再做一次判断。
至此，这个问题暂时解决了，无论是utf-8配置文件，还是gb2312配置文件，都通过，不确定是否会影响Salt本身的功能。
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