Saltstack配置管理之牛刀小试
配置管理是基于远程执行的，实现的是模版引擎的功能top file的作用：1 指定环境 2 指定Minion 3 指定需要加载的模块
top file必须放在/srv/salt/base下面：
# ll /srv/salt/base/
总用量 8
-rw-r--r-- 1 root root 172 11月 16 21:58 apache.sls
-rw-r--r-- 1 root root53 11月 16 22:43 top.sls
# vim /etc/salt/master
419 file_roots:
420 base:
421 - /srv/salt/base
422 prod:
423 - /srv/salt/prod
424 test:
425 - /srv/salt/test
根据/etc/salt/master文件中的配置来创建对应的目录
# mkdir /srv/salt/{test,base,prod}
然后重新启动salt-master
# /etc/init.d/salt-master restart
Stopping salt-master daemon: [确定]
Starting salt-master daemon: [确定]
应用场景1：修改minion上面的dns文件
在基础环境下创建一个files目录，放范例文件
# mkdir /srv/salt/base/files
# vim /srv/salt/base/dns.sls
/etc/resolv.conf:
file.managed:
- source: salt://files/resolv.conf
- user: root
- group: root
- mode: 644
# cp /etc/resolv.conf ./files/ 将机器上面的/etc/resolv.conf文件拷贝到/srv/salt/base/files/目录下，将第一行删除，如下：
执行状态：
# salt '*' state.sls dns =====================>直接执行状态，如下是返回结果
linux-node1.example.com:
----------
> Function: file.managed =====================>状态和模块
Result: True =====================>返回结果
Comment: File /etc/resolv.conf updated =====================>输出状态显示
Started: 13:05:20.253533 =====================>开始时间
Duration: 71.313 ms =====================>执行时间
Changes: =====================>如下是文件改变的地方
----------
diff:
---
+++
@@ -1,2 +1,1 @@
-# Generated by NetworkManager
nameserver 10.0.0.2
Summary
------------
Succeeded: 1 (changed=1)
Failed: 0
------------
Total states run: 1
linux-node2.example.com:
----------
> Function: file.managed
Result: True
Comment: File /etc/resolv.conf updated
Started: 13:05:20.500400
Duration: 80.807 ms
Changes:
----------
diff:
---
+++
@@ -1,2 +1,1 @@
-# Generated by NetworkManager
nameserver 10.0.0.2
Summary
------------
Succeeded: 1 (changed=1)
Failed: 0
------------
Total states run: 1
# cat files/resolv.conf
nameserver 10.0.0.2
# cat /etc/resolv.conf
nameserver 10.0.0.2
# cat /etc/resolv.conf
nameserver 10.0.0.2
结论：linux-node1和linux-node2上面的/etc/resolv.conf文件都修改成功，代表状态执行成功。
场景2： 用高级状态修改文件：
# vim /srv/salt/base/files/resolv.conf
#hehe
nameserver 10.0.0.2
# cat /srv/salt/base/top.sls
base: ===========================>指定的是哪个环境
'*': ===========================>指定哪台minion
- dns ===========================>指定哪个状态模块
执行结果展示：
# salt '*' state.highstate
linux-node2.example.com:
----------
> Function: file.managed
Result: True
Comment: File /etc/resolv.conf updated
Started: 13:19:01.723665
Duration: 48.675 ms
Changes:
----------
diff:
---
+++
@@ -1,1 +1,3 @@
+#hehe ========>此为添加的地方
nameserver 10.0.0.2
+
Summary
------------
Succeeded: 1 (changed=1)
Failed: 0
------------
Total states run: 1
linux-node1.example.com:
----------
> Function: file.managed
Result: True
Comment: File /etc/resolv.conf updated
Started: 13:19:01.766432
Duration: 33.202 ms
Changes:
----------
diff:
---
+++
@@ -1,1 +1,3 @@
+#hehe ========>此为添加的地方
nameserver 10.0.0.2
+
Summary
------------
Succeeded: 1 (changed=1)
Failed: 0
------------
Total states run: 1
如上所示，文件修改成功
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