问题描述：
通过saltstack的jinja模板方式，可以将变量的值写入到配置文件，即动态获取的方式。这里介绍，通过执行salt函数来获取值的方式。
演示：
1.通过在sls中，增加jinja的模板信息，变量信息，通过salt函数获取该值。
apache-config: file.managed: - name: /etc/httpd/conf/httpd.conf - source: salt://lamp/files/httpd.conf - user: root - group: root - mode: 644 - template: jinja - defaults: Listen_Port: 86 OS: {{ grains['os'] }} HW_ADDR: {{ salt['network.hw_addr']('eth1') }}
2.修改配置文件httpd.conf，增加引用变量HW_ADDR
# Hard Addr is {{ HW_ADDR }} #应用变量的值。
3.执行状态模块，进行配置
[root@testvm01 lamp]# salt 'testvm03' state.sls lamp.lamp testvm03: ---------- ID: lamp-pkgs Function: pkg.installed Result: True Comment: All specified packages are already installed Started: 17:08:54.896384 Duration: 484.232 ms Changes: ---------- ID: apache-config Function: file.managed Name: /etc/httpd/conf/httpd.conf Result: True Comment: File /etc/httpd/conf/httpd.conf updated Started: 17:08:55.383683 Duration: 67.694 ms Changes: ---------- diff: --- +++ @@ -7,7 +7,7 @@ # for a discussion of each configuration directive. # # OS is RedHat -# Hard Addr is 08:00:27:7c:9c:2d +# Hard Addr is 08:00:27:f1:2e:e9 #获取到了网卡的信息，并且增加到该配置文件中 # Do NOT simply read the instructions in here without understanding # what they do. They're here only as hints or reminders. If you are unsure # consult the online docs. You have been warned. ---------- ID: php-config Function: file.managed Name: /etc/php.ini Result: True Comment: File /etc/php.ini is in the correct state Started: 17:08:55.451548 Duration: 11.319 ms Changes: ---------- ID: apache-service Function: service.running #检测到配置文件发生了变化，就reload配置文件 Name: httpd Result: True Comment: Service reloaded Started: 17:08:55.498927 Duration: 82.003 ms Changes: ---------- httpd: True ---------- ID: mysql-service Function: service.running Name: mysqld Result: True Comment: The service mysqld is already running Started: 17:08:55.581261 Duration: 106.275 ms Changes: Summary for testvm03 ------------ Succeeded: 5 (changed=2) Failed: 0 ------------ Total states run: 5 Total run time: 751.523 ms
jinja中调用salt函数的语法：
# The following two function calls are equivalent. {{ salt['cmd.run']('whoami') }} {{ salt.cmd.run('whoami') }}
注意：第一中写法，参数要有括号，并且用单引号，否则会报错。
文档创建时间：2019年3月11日17:10:01