利用saltstack部署keepalived高可用集群

浅浅的花香味﹌ 2021-10-19 15:46 420阅读 0赞

实验环境：

<table> 
 <thead> 
  <tr> 
   <th>server1：172.25.31.1</th> 
   <th>salt-master</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>server2：172.25.31.2</td> 
   <td>salt-minion、 apache、keepalived</td> 
  </tr> 
  <tr> 
   <td>server3：172.25.31.3</td> 
   <td>salt-minion、nginx、keepalived</td> 
  </tr> 
 </tbody> 
</table>

[apache与nginx的部署][apache_nginx]上文已经介绍过了，这里就不介绍了。

1.建立keepalived目录

[root@server1 salt]# mkdir keepalived
    [root@server1 salt]# cd keepalived/
    [root@server1 keepalived]# ls
    [root@server1 keepalived]# mkdir files
    [root@server1 keepalived]# ls
    files

2.copykeepalived配置文件并修改

[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 }}
        interface eth0
        virtual_router_id {
       { VRID }}
        priority {
       { PRIORITY }}
        advert_int 1
        authentication {
            auth_type PASS
            auth_pass 1111
        }
        virtual_ipaddress {
            172.25.31.100
        }
    }

3.编辑keepalived安装文件

[root@server1 keepalived]# cat install.sls 
    install-keepalived:
      pkg.installed:
        - pkgs:
          - keepalived
    
      file.managed:
        - name: /etc/keepalived/keepalived.conf
        - source: salt://keepalived/files/keepalived.conf
        - template: jinja
        - context:
          STATE: {
       { pillar['state'] }}
          VRID: {
       { pillar['vrid'] }}
          PRIORITY: {
       { pillar['priority'] }}
    
      service.running:
        - name: keepalived
        - watch:
          - file: install-keepalived

4.编辑相应的pillar文件

[root@server1 pillar]# cat web/vars.sls 
    {% if grains['fqdn'] == 'server2' %}
    webserver: httpd
    ip: 172.25.31.2
    port: 80
    state: MASTER
    vrid: 31
    priority: 100
    {% elif grains['fqdn'] == 'server3' %}
    webserver: nginx
    state: BACKUP
    vrid: 31
    priority: 50
    {% endif %}
    [root@server1 pillar]# cat top.sls 
    base:
      '*':
        - web.vars

5.编辑顶层top

root@server1 salt]# cat top.sls 
    base:
      'roles:apache':
        - match: grain
        - apache.install
        - keepalived.install
      'roles:nginx':
        - match: grain
        - nginx.service
        - keepalived.install

6.推送相应软件给server2、server3  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70 1]

测试：

server2的优先级较高，vip在server2上  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70 2]  
浏览器输入：172.25.31.100

访问的是server2的apache  
![在这里插入图片描述][20190814090112536.png]

关闭server2的keepalived

[root@server2 ~]# systemctl stop keepalived.service

vip转移到server3上  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70 3]  
此时，访问的是server3的nginx  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70 4]

[apache_nginx]: https://mp.csdn.net/mdeditor/99209756#
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70]: /images/20211019/7d792483449f4c6b971066b47ca9a4f6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70 1]: /images/20211019/84420468e50e4b4a93445db22b473b14.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70 2]: /images/20211019/b9428f6ecc9943c1b81c8e050a5e9c57.png
[20190814090112536.png]: /images/20211019/ebfef5bc583e442abac0b2942ecb52c0.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70 3]: /images/20211019/54630b1c681a4caabbfc2da7044a0fe1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg4OTYxNg_size_16_color_FFFFFF_t_70 4]: /images/20211019/6306f0fd80b94fe6abbf68b4afa358bd.png