配置文件需修改的内容及注意点：
Edit the master config file: 1. Uncomment and change the user: root value to your own user.
默认用户为root，可更改为自己的用户名
2. Uncomment and change the root_dir: / value to point to /path/to/your/virtualenv.
修改环境主路径
3. If you are running version 0.11.1 or older, uncomment and change the pidfile: /var/run/salt-master.pid value to point to /path/to/your/virtualenv/salt-master.pid.
在0.11.1及以前的版本需要把/var/run/salt-master.pid链接到自己的环境路径下的salt-master.pid.
Uncomment and change the id: value to something descriptive like “saltdev”. This isn’t strictly necessary but it will serve as a reminder of which Salt installation you are working with.
设置id的描述，虽然不是必要的但可以便于分清设备
确保你本地的salt安装正确且在运行的一系列操作
verify your local Salt installation is working: cd /path/to/your/virtualenv
salt-master -c ./etc/salt -d
salt-minion -c ./etc/salt -d
salt-key -c ./etc/salt -L
salt-key -c ./etc/salt -A
salt -c ./etc/salt ’*’ test.ping
其中-d为运行在debug模式
If you plan to run salt-call with this self-contained development environment in a masterless setup, you should invoke salt-call with -c /path/to/your/virtualenv/etc/salt so that salt can find the minion config file. Without the -c option, Salt finds its config files in /etc/salt.
如果运行在一个没有master的机器上，需要调用-c以便于设置自己的安装目录，没有-c就默认为/etc/salt
If you would like to log to the console instead of to the log file, remove the -d.
如果你想要把日志输出到控制台而不是log文件，把-d参数去除（安装时的日志输出，参看上文的安装时的命令）
The socket path is limited to 107 characters on Solaris and Linux, and 103 characters on BSD-based systems.
Solaris 和 Linux的 socket路径限制在107字符内，BSD系统限制在103个字符内
File descriptor limits Ensure that the system open file limit is raised to at least 2047:
# check your current limit ：ulimit -n
系统可打开文件的数量是2047以上，如果你要查看当前最大可用数量，用命令ulimit -n，如果想提高打开文件的数量，用命令ulimit -n 2047或其他数字，重启后生效
