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saltstack pillar与ansible 变量
需求，由不同主机，生成不同的配置项目。

1、在ansible中如果要实现配置文件的参数替换，只需要在inventory中配置,并使用{{}}在template中引用变量即可
示例：

[test]
had5 port=111  var1=1
had6 port=222  var1=2

vi templates/test.conf.j2
port = {{ port }}
var = {{ var1 }}

生成的配置文件内容如下:

[root@hadm vartest]# ansible all -i hosts -m shell -a "cat /tmp/test.conf"
had5 | success | rc=0 >>
port = 111
var = 1

had6 | success | rc=0 >>
port = 222
var = 2

2、在slatstack，要实现上述需求，需要借助pillar与grains。

先看pillar的配置：

[root@hadm base]# tree /srv/pillar/vartest/
/srv/pillar/vartest/
└── init.sls

0 directories, 1 file
[root@hadm base]# cat /srv/pillar/top.sls
base:
'*':
- vartest

[root@hadm base]# cat /srv/pillar/vartest/init.sls
vartest:
conn: 100
{% if grains['id'] == 'had5.com' %}
port: 111
var1: 1
{% elif grains['id'] == 'had6.com' %}
port: 222
var1: 2
{% else %}
port: 888
var1: 8
{% endif %}

我们是通过 grains来指定特定主机的变量参数值。

state配置：

[root@hadm base]# tree /srv/salt/base/vartest/
/srv/salt/base/vartest/
├── init.sls
└── test.conf.j2

0 directories, 2 files
[root@hadm base]#
[root@hadm base]#
[root@hadm base]#
[root@hadm base]#
[root@hadm base]# cat /srv/salt/base/vartest/init.sls
vartest:
file.managed:
- source: salt://vartest/test.conf.j2
- name: /tmp/test.conf.salt
- user: root
- group: root
- mode: 644
- template: jinja
[root@hadm base]#
[root@hadm base]#
[root@hadm base]# cat /srv/salt/base/vartest/test.conf.j2
port = {{ pillar['vartest']['port'] }}
var = {{ pillar['vartest']['var1'] }}

--刷新pillar
[root@hadm base]# salt '*' saltutil.refresh_pillar
had6.com:
True
had5.com:
True
hadm.com:
True

--查看pillar是否生效
[root@hadm base]# salt '*' pillar.data vartest
hadm.com:
----------
vartest:
----------
conn:
100
port:
888
var1:
8
had5.com:
----------
vartest:
----------
conn:
100
port:
111
var1:
1
had6.com:
----------
vartest:
----------
conn:
100
port:
222
var1:
2
[root@hadm base]# salt '*' state.sls vartest
hadm.com:
----------
ID: vartest
Function: file.managed
Name: /tmp/test.conf.salt
Result: True
Comment: File /tmp/test.conf.salt updated
Started: 14:38:25.607505
Duration: 22.97 ms
Changes:
----------
diff:
New file
mode:
0644

Summary
------------
Succeeded: 1 (changed=1)
Failed:    0
------------
Total states run:     1
had6.com:
----------
ID: vartest
Function: file.managed
Name: /tmp/test.conf.salt
Result: True
Comment: File /tmp/test.conf.salt updated
Started: 14:38:31.355029
Duration: 36.952 ms
Changes:
----------
diff:
New file
mode:
0644

Summary
------------
Succeeded: 1 (changed=1)
Failed:    0
------------
Total states run:     1
had5.com:
----------
ID: vartest
Function: file.managed
Name: /tmp/test.conf.salt
Result: True
Comment: File /tmp/test.conf.salt updated
Started: 14:38:42.161422
Duration: 24.327 ms
Changes:
----------
diff:
New file
mode:
0644

Summary
------------
Succeeded: 1 (changed=1)
Failed:    0
------------
Total states run:     1
[root@hadm base]#
[root@hadm base]# salt '*' cmd.run 'cat /tmp/test.conf.salt'
hadm.com:
port = 888
var = 8
had6.com:
port = 222
var = 2
had5.com:
port = 111
var = 1

salt还是要复杂一些的。

本文出自 “与IT一起的日子” 博客，请务必保留此出处http://raugher.blog.51cto.com/3472678/1688064