今天试着在centos7上安装了saltstack自动化运维工具，以下是安装步骤：
首先，我们安装bash-completion包，它可以补全centos7的命令。
yum install -y bash-completion
关于服务的启动问题：
首先，设置服务开机自动启动：
systemctl enable salt-master
查看是否设置好开机启动：
systemctl is-enabled salt-master
启动服务：
systemctl restart salt-master
查看服务状态：
[[email protected] ~]# systemctl status salt-master
● salt-master.service - The Salt Master Server
Loaded: loaded (/usr/lib/systemd/system/salt-master.service; enabled; vendor preset: disabled)
Active: active (running) since Tue 2016-12-06 09:07:32 EST; 22min ago
Main PID: 2734 (salt-master)
CGroup: /system.slice/salt-master.service
├─2734 /usr/bin/python /usr/bin/salt-master
├─2741 /usr/bin/python /usr/bin/salt-master
├─2742 /usr/bin/python /usr/bin/salt-master
├─2743 /usr/bin/python /usr/bin/salt-master
├─2746 /usr/bin/python /usr/bin/salt-master
├─2747 /usr/bin/python /usr/bin/salt-master
├─2748 /usr/bin/python /usr/bin/salt-master
├─2751 /usr/bin/python /usr/bin/salt-master
├─2752 /usr/bin/python /usr/bin/salt-master
├─2755 /usr/bin/python /usr/bin/salt-master
└─2756 /usr/bin/python /usr/bin/salt-master
Dec 06 09:07:31 localhost.localdomain systemd[1]: Starting The Salt Master Server...
Dec 06 09:07:32 localhost.localdomain systemd[1]: Started The Salt Master Server.