saltstack实现keepalive高可用集群

最新推荐文章于 2020-03-18 17:02:43 发布

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本文详细介绍了如何使用SaltStack自动化部署Keepalived高可用集群的过程，包括配置推送目录、编辑SaltStack状态文件、设置pillar变量、清除HTTPd配置中的host选项以及测试虚拟IP的漂移。

1.创建推送目录并修改keepalived推送配置文件

[root@server1 salt]# mkdir keepalived
[root@server1 salt]# cd keepalived
[root@server1 keepalived]# mkdir files
[root@server1 keepalived]# cp /etc/keepalived/keepalived.conf ##添加配置文件
[root@server1 keepalived]# vim files/keepalived.conf 
[root@server1 keepalived]# cat files/keepalived.conf 
! Configuration File for keepalived

global_defs {
   notification_email {
  	root@localhost
   }
   notification_email_from keepalived@localhost
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state {{ STATE }}##角色
    interface eth0
    virtual_router_id {{ VRID }}##虚拟id
    priority {{ PRIORITY }}##优先级高的为master
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        172.25.32.100
    }
}

2.编辑推送文件

[root@server1 keepalived]# vim install.sls ##编辑推送文件
[root@server1 keepalived]# cat install.sls 
keepalived-install:
  pkg.installed:
    - pkgs:
      - keepalived

  file.managed:
    - name: /etc/keepalived/keepalived.conf
    - source: salt://keepalived/files/keepalived.conf
    - user: root
    - group: root
    - mode: 644
    - template: jinja
    - context:
        STATE: {{ pillar['state'] }}##STATE选择变量为state
        VRID: {{ pillar['vrid'] }}##虚拟ID选择变量为vrid
        PRIORITY: {{ pillar['priority'] }}##优先级选择变量为priority
  service.running:
    - name: keepalived
    - enable: true
    - reload: true
    - watch:
      - file: keepalived-install

3.编辑相应的pillar文件（变量文件）

[root@server1 keepalived]# vim /srv/pillar/web/vars.sls 
[root@server1 keepalived]# cat /srv/pillar/web/vars.sls 
{% if grains['fqdn'] == 'server2' %} 
webserver: httpd 
state: MASTER
ip: 172.25.32.2
vrid: 32
priority: 100
port: 80
{% elif grains['fqdn'] == 'server3' %} 
webserver: nginx 
state: BACKUP
vrid: 32
priority: 99
ip: 172.25.32.3
port: 80
{% endif %}

4.编辑顶层推送文件

[root@server1 keepalived]# cd ..
[root@server1 salt]# vim top.sls 
[root@server1 salt]# cat top.sls 
base:
  'server2':
    - apache.install
    - keepalived.install
  'server3':
    - nginx.service
    - keepalived.install

5.清除httpd推送文件与配置文件中的host选项（不然只监听本机的默认发布文件）

[root@server1 salt]# vim apache/install.sls 
[root@server1 salt]# cat apache/install.sls 
httpd:
  pkg.installed:
    - pkgs:
      - httpd
      - php
      - httpd-tools
  service.running:
    - name: httpd
    - enable: true

  file.managed:
    - name: /etc/httpd/conf/httpd.conf
    - source: salt://apache/files/httpd.conf
    - user: root
    - group: root
    - mode: 644
    - template: jinja
    - context:
      port: {{ pillar['port'] }}

[root@server1 salt]# vim apache/files/httpd.conf
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