Saltstack一键部署高可用负载均衡集群

在上篇的基础上，salt-master节点向server2与server3分别推送了httpd和nginx服务：

向两台节点机的相关服务上配置默认发布页面：

准备第四台虚拟机，安装配置并开启salt-minion服务：

在master端接受该minion节点的minion-key

服务部署：

前端代理使用haproxy+keepalived,后端web server使用server2的httpd服务与server3的nginx服务用于负载效果的体现

server1     172.25.81.1     salt-master，haproxy高可用+keepalived
server2     172.25.81.2     salt-minion，httpd服务器
server3     172.25.81.3     salt-minion，nginx服务器
server4     172.25.81.4     salt-minion，haproxy高可用+keepalived

saltstack部署haproxy服务

[root@server1 ~]# mkdir /srv/salt/haproxy

[root@server1 ~]# mkdir /srv/salt/haproxy/files

拷贝haproxy配置文件到master主机的/srv/salt/haproxy/files目录下

[root@server1 ~]# vim /srv/salt/haproxy/install.sls

haproxy-install:
  pkg.installed:
    - pkgs:
      - haproxy

  file.managed:
    - name: /etc/haproxy/haproxy.cfg
    - source: salt://haproxy/files/haproxy.cfg

  service.running:
    - name: haproxy
    - reload: True
    - watch:
      - file: haproxy-install

[root@server1 ~]# vim /srv/salt/haproxy/files/haproxy.cfg

 59     stats uri /status
 60 #---------------------------------------------------------------------
 61 # main frontend which proxys to the backends
 62 #---------------------------------------------------------------------
 63 frontend  main *:80                       ##均衡器监听80端口
 64     default_backend             app                   ##引用后端自定义服务器组名app
 65
 66 backend app                                 ##设定默认后端，名字为app
 67     balance     roundrobin              ##轮询算法
 68     server  app1 172.25.81.2:80 check           ##设定后端apache服务器的IP，并引入健康检查
 69     server  app2 172.25.81.3:80 check          ##设定后端nginx服务器的IP，并引入健康检查

向server1和server4节点推haproxy服务：

[root@server1 salt]# salt server[1,4] state.sls haproxy.install

在查看两台节点机查看服务是否推送成功：

测试负载均衡是否实现：

 

自带健康检查：

停掉server2的apache服务：

重新测试负载均衡：

saltstack部署keepalived服务

[root@server1 ~]# mkdir /srv/salt/keepalived

[root@server1 ~]# vim /srv/salt/keepalived/install.sls

kp-install:
  pkg.installed:
    - pkgs:
      - keepalived

拷贝keepalived配置文件到master主机的/srv/salt/keepalived/files目录下

[root@server1 salt]# mkdir /srv/salt/keepalived/files

[root@server1 salt]# vim /srv/salt/keepalived/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 {
        172.25.81.100
    }
}

[root@server1 salt]# vim /srv/salt/keepalived/install.sls

kp-install:
  pkg.installed:
    - pkgs:
      - keepalived
  file.managed:
    - name: /etc/keepalived/keepalived.conf
    - source: salt://keepalived/files/keepalived.conf
    - template: jinja
      {% if grains['fqdn'] == 'server1' %}
      STATE: MASTER
      VRID: 81
      PRIORITY: 100
      {% elif grains['fqdn'] == 'server4' %}
      STATE: BACKUP
      VRID: 81
      PRIORITY: 50
      {% endif %}
  service.running:
    - name: keepalived
    - reload: True
    - watch:
      - file: kp-install

[root@server1 salt]# vim /srv/salt/top.sls

base:
  'server1':
    - haproxy.install
    - keepalived.install

  'server2':
    - httpd.service

  'server3':
    - nginx.service

  'server4':
    - haproxy.install
    - keepalived.install

 

[root@server1 salt]# salt '*' state.highstate

测试：

此时虚拟ip在server1上：

 

停掉server1的keepalived服务：

虚拟ip漂移到server4上：

依然可以实现负载均衡：