SaltStack配置管理--状态间的关系

Posted 2020-11-10 jimmy_xuli

一.include的引用

需求场景：用于含有多个SLS的状态，使用include可以进行多个状态的组合，将安装apache，php，mysql集合在一个sls中

 

[[email protected] prod]# pwd
/srv/salt/prod
[[email protected] prod]# vim lamp.sls
include:
  - apache.init
  - php.init
  - mysql.init
[[email protected] prod]# vim ../base/top.sls 
prod:
  ‘7mini-node1‘:
    - lamp
[[email protected] prod]# salt  "7mini-node1" state.highstate    #执行无报错为正确

 

 

二.extend的使用

需求场景：软件包安装的时候，需求假设：只在node1上按装php-mbstring包，其他的机器不安装。单独在组合的sls中添加，不需要可以删掉

[[email protected] prod]# pwd
/srv/salt/prod
[[email protected] prod]# vim lamp.sls 
include:
  - apache.init
  - php.init
  - mysql.init

extend:
  php-install:
    pkg.installed:
      - name: php-mbstring
[[email protected] prod]# salt  "7mini-node1" state.highstate

 

三、require和require_in的使用

require：我依赖谁
require_in：我被谁依赖
需求场景：如果安装不成功或者配置httpd不成功，不启动httpd

（1）require使用
[[email protected] apache]# pwd
/srv/salt/prod/apache
[[email protected] apache]# systemctl stop httpd
[[email protected] apache]# vim init_require.sls 
apache-install:
  pkg.installed:
    - name: httpd

apache-config:
  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd1.conf----->将此处的文件改错，模拟配置错误
    - user: root
    - group: root
    - mode: 644

apache-service:
  service.running:
    - name: httpd
    - enable: True
    - require:---------------------------->使用require,表示依赖
      - pkg: apache-install--------------->依赖的状态模块为pkg模块，id为apache-install
      - file: apache-config--------------->依赖的状态模块为file模块，id为apache-config
[[email protected] apache]# salt   "7nini-noed1" state.highstate   #执行模块提示会有报错，此时httpd不会正常启动

　

（2）require_in使用               #与require是相同的只是表达方式的不同
[[email protected] apache]# vim init_require_in.sls 
apache-install:
  pkg.installed:
    - name: httpd
    - require_in:------------------>被依赖
      - service: apache-service---->被依赖的模块是service，id为apache-service

apache-config:
  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd.conf
    - user: root
    - group: root
    - mode: 644
    - require_in:
      - service: apache-service

apache-service:
  service.running:
    - name: httpd
    - enable: True

解释说明：require和require_in都能实现依赖的功能，主动和被动的关系不同

　　

四、watch和watch_in的使用

需求场景：监控配置文件变动，重启服务或重载服务

设置重启

[[email protected] apache]# pwd
/srv/salt/prod/apache
[[email protected] apache]# vim init_watch.sls 
apache-install:
  pkg.installed:
    - name: httpd

apache-config:
  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd.conf
    - user: root
    - group: root
    - mode: 644

apache-service:
  service.running:
    - name: httpd
    - enable: True
    - watch:---------------------->使用watch
      - file: apache-config------->监控的模块为file，id为apache-config
[[email protected] apache]# vim files/httpd.conf     #随意修改配置文件
[[email protected] apache]# salt  "7mini-node1" state.highstate            

　设置重载

[[email protected] apache]# vim init_watch.sls 
apache-install:
  pkg.installed:
    - name: httpd

apache-config:
  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd.conf
    - user: root
    - group: root
    - mode: 644

apache-service:
  service.running:
    - name: httpd
    - enable: True
    - reload: True----------------------------------->增加参数重载
    - watch:
      - file: apache-config

[[email protected] apache]# salt -S "192.168.56.11" state.highstate

 

五、unless：状态间的条件判断

需求场景：给apache的admin目录进行加密登陆查看    #如果某文件存在将不执行

（1）修改配置文件，添加认证功能
[[email protected] apache]# vim files/httpd.conf 
<Directory "/var/www/html/admin">
        AllowOverride All
        Order allow,deny
        Allow from all
        AuthType Basic
        AuthName "haha"
        AuthUserFile /etc/httpd/conf/htpasswd_file
        Require user admin
</Directory>

（2）修改状态文件init.sls
[[email protected] apache]# vim init.sls 
apache-install:
  pkg.installed:
    - name: httpd

apache-config:
  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd.conf
    - user: root
    - group: root
    - mode: 644

apache-auth:
  pkg.installed:
    - name: httpd-tools
  cmd.run:------>使用cmd模块的run方法
    - name: htpasswd -bc /etc/httpd/conf/htpasswd_file admin admin---->生成密码文件
    - unless: test -f /etc/httpd/conf/htpasswd_file---->unless判断条件，test -f判断为假则执行。即htpasswd文件如果不存在就执行生成密码

apache-service:
  service.running:
    - name: httpd
    - enable: True
    - reload: True
    - watch:
      - file: apache-config

[[email protected] apache]# salt  "7mini-node1" state.highstate

　浏览器访问10.0.0.11/admin/index.html会出现密码验证