SalttSack自动化运维（四）——JINJA模块

一、调用jinja

1.脚本指定jinja参数

[root@server1 pillar]# cd /srv/salt/apache/
[root@server1 apache]# vim install.sls 
	httpd-install:
  pkg.installed:
    - pkgs:
      - httpd
      - php
      - httpd-tools

  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd.conf
    - user: root
    - group: root
    - mode: 4
    - template: jinja
    - context:
      port: 80
      host: 172.25.6.2

2.配置文件中引入可变参数

[root@server1 apache]# vim files/httpd.conf 
Listen {{ host }}:{{ port }}

测试：

[root@server1 apache]# salt server2 state.sls apache.install

[root@server2 salt]# vim /etc/httpd/conf/httpd.conf

二、jinja和grains的结合使用

1.查看节点的ip信息

[root@server1 apache]# vim files/httpd.conf 
Listen {{ grains['ipv4'][-1] }}:{{ port }}

3.jinja结合grains使用

（1）.更改httpd的配置文件

[root@server1 apache]# vim files/httpd.conf 
Listen {{ host }}:{{ port }}

[root@server1 apache]# vim install.sls 
httpd-install:
  pkg.installed:
    - pkgs:
      - httpd
      - php
      - httpd-tools

  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd.conf
    - user: root
    - group: root
    - mode: 4
    - template: jinja
    - context:
      port: 80
      host: {{ grains['ipv4'][1] }}

测试：

四、jinja模块结合pillar

1.在脚本文件的jinja模块中引入pillar

[root@server1 apache]# vim install.sls 
httpd-install:
  pkg.installed:
    - pkgs:
      - httpd
      - php
      - httpd-tools

  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd.conf
    - user: root
    - group: root
    - mode: 4
    - template: jinja
    - context:
      port: {{ pillar['port'] }}
      host: {{ pillar['ip'] }}

2.在pillar的默认文件中写入jinja所需信息

[root@server1 apache]# vim /srv/pillar/vars.sls
{% if grains['fqdn'] == 'server2' %}
webserver: apache
state: master
ip: 172.25.6.2
port: 80
{% elif grains['fqdn'] == 'server3' %}
webserver: nginx
state: backup
ip: 172.25.6.3
port: 80
{% endif %}

测试：