A.ssh B.telnet C.ftp D.elinks
A.1211 B.11211 C.22122 D.11210
A.keepalived是保持存活的意思 B.keepalived在網(wǎng)絡(luò)里面就是保持在線了,也就是所謂的高可用或熱備 C.keepalived不是用來防止單點(diǎn)故障的 D.Keepalived就是巧用VRRP協(xié)議來實(shí)現(xiàn)高可用性(HA)的