实现工具：haproxy+keepalived
haproxy.cfg的配置：
global log 127.0.0.1 local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon stats socket /var/lib/haproxy/stats defaults mode tcp log global timeout connect 10s timeout client 1m timeout server 1m timeout check 10s maxconn 3000 frontend kube-api bind 0.0.0.0:6443 mode tcp log global default_backend kube-master backend kube-master balance source server master01 10.10.5.84:6443 check inter 2000 fall 2 server master02 10.10.5.85:6443 check inter 2000 fall 2 server master03 10.10.5.92:6443 check inter 2000 fall 2 listen stats mode http bind 0.0.0.0:1080 stats enable stats hide-version stats uri /haproxyadmin?stats stats realm Haproxy\ Statistics stats auth admin:admin stats admin if TRUE