虛擬IP配置

1.安裝keepalived

下載keepalived-1.2.7.tar.gz

tar -zxvf keepalived-1.2.7.tar.gz

cd keepalived-1.2.7

./configure --prefix=/opt/keepalived  && make && make install

chkconfig --add keepalived #添加系統服務

2.配置keepalived

vim /etc/keepalived/keepalived.conf

    2.1配置keepalived須要檢測的應用程序監測腳本

vrrp_script chk_nginx { script "/opt/keepalived/check_nginx.sh" interval 2 weight 2 }

    2.2 主要配置

vrrp_instance VS_8 {      state BACKUP      #配置是主仍是備      interface eth0     #網卡      virtual_router_id 59 #router_id主備要同樣，另外，經過tcpdump vrrp查看哪些vrid在使用，不要有衝突      priority 100 #優先級      advert_int 1      authentication {          auth_type PASS          auth_pass 1111      }      track_interface {          eth0      }      virtual_ipaddress {          10 . 13 . 81 . 8 / 24 dev eth0  #這裏配置虛擬IP      }      track_script {          chk_nginx      }      # 下面是發生切換時的通知腳本      notify_master "/opt/keepalived/notify.py from_120_keepalived_master_is_up"      notify_backup "/opt/keepalived/notify.py from_120_keepalived_backup_is_down"      notify_fault "/opt/keepalived/notify.py from_120_keepalived_fault" }

3. 檢查虛擬IPip -f inet addr 就能夠在主服務器上看到剛纔配置的虛擬IP了。