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Keepalived High availability Cluster keepalived High availability Cluster means that a master server and a backup server share a virtual ip address. When the master server goes down, the backup server starts to work, thus avoiding access accidents. Set up keepalived high availability cluster [master] # yum-y install keepalived # vim / etc/keepalived/keepalived.conf vrrp_instance webha {state MASTER master server interface eth0 network interface priority 130 priority authentication {auth_type PASS auth_pass 123456 master, Backup password same} virtual_ipaddress {192.168.4.251 Virtual Network address}} # service keepalived start # chkconfig keepalived on Boot # chkconfig-- list | grep keepalived # ipadd show | grep 192.168.4 check which server the virtual ip is on [slave] # vim / etc/keepalived/keepalived.confvrrp_instance webha {state SLAVE/BACKUP backup server interface eth0 network interface priority 130 priority authentication {auth_type PASS auth_pass 123456 main, Backup password same} virtual_ipaddress {192.168.4.251 virtual network address}} # service keepalived start # curl http://192.168.4.251

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