nginx high-availability configuration

reference:

https://www.cnblogs.com/yaboya/p/9107442.html

1. Preparations

(1) two servers

(2) are installed nginx

(3) are installed keepalived

yum install keepalived -y

2. Configure keepalived profile

Modify /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   notification_email {
     [email protected]
     [email protected]
     [email protected]
   }
   notification_email_from [email protected]
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
   vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}

vrrp_instance VI_1 {
    state MASTER        #主服务其为MASTER，备用服务器为BACKUP
    interface enp0s8
    virtual_router_id 51
    priority 100        #主服务优先级必须大于备用服务器
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.56.16
        192.168.56.17
        192.168.56.18
    }
}

 3. Start

(1) Start ngnix

(2) Start keepalived

systemctl start keepalived

4. Access virtual IP address

        192.168.56.16
        192.168.56.17
        192.168.56.18

5. Close the master server (direct off)

Access the virtual IP address, you can still have access to nginx