[ERROR ] Error parsing configuration file: /etc/salt/minion - conf should be a document, not <type 'str'>.

错误信息

[ERROR   ] Error parsing configuration file: /etc/salt/minion - conf should be a document, not <type 'str'>.
[ERROR   ] DNS lookup of 'salt' failed.

修改minion文件的master是漏了空格
#master: salt
应该修改为
master:空格ip