Keepalived高可用集群

Keepalived高可用集群

 keepalived高可用集群是指一个主服务器，一个备份服务器，共同使用一个虚拟的ip地址，当主服务器宕掉之后，备份服务器开始工作，这样就避免了访问事故。 搭建keepalived高可用集群 [master] #yum -y install keepalived #vim /etc/keepalived/keepalived.conf vrrp_instance webha {            state MASTER      主服务器            interface eth0    网卡口            priority 130      优先级            authentication {            auth_type PASS            auth_pass 123456  主、备密码相同                }            virtual_ipaddress {                    192.168.4.251  虚拟的网络地址                    }            }    #service keepalived start    #chkconfig keepalived on  开机自启    #chkconfig --list | grep keepalived    #ip add show | grep 192.168.4   查看虚拟ip在哪台服务器上[slave]#vim /etc/keepalived/keepalived.confvrrp_instance webha {            state SLAVE/BACKUP      备份服务器            interface eth0    网卡口            priority 130      优先级            authentication {            auth_type PASS            auth_pass 123456  主、备密码相同                }            virtual_ipaddress {                    192.168.4.251  虚拟的网络地址                    }            }    #service keepalived start    #curl http://192.168.4.251