k8s搭建高可用集群

我当初把keepalived HAproxy移到了node节点，解决的端口冲突问题
在google上搜索download 比如libsensors.so.4 rpm for centos 7
需要下面这些，或者直接离线源倒过去，然后yum install 安装

通过systemctl stop keepalived来验证ip a s ，vip是否漂移了
注意haproxy.cfg的ip不是node节点的，是master节点的

# 选两个节点安装 Keepalived 和 HAproxy
yum install keepalived haproxy psmisc -y
# 在这两台机器上修改配置文件
vi /etc/haproxy/haproxy.cfg
# 只需要修改最后这里，两台机器都这样改 43 是 apiserver 端口
backend app
    balance     roundrobin
    server app-1 10.110.159.15:43 check
    server app-2 10.110.159.16:43 check # 注意这里的ip不是node节点的，是master节点的
 
 
systemctl restart haproxy
systemctl enable haproxy
 
# Keepalived
vi /etc/keepalived/keepalived.conf
# 注意修改注释部分 两台机器的 src ip 和 peer ip 对调
  interface eno1                  # Network card
 
  unicast_src_ip 10.110.159.15     # The IP address of this machine
 
  unicast_peer {
 
    10.110.159.16       # The IP address of peer machines
  }
  virtual_ipaddress {
 
    10.110.159.25/24      # The VIP address
 
  }
 
systemctl restart keepalived
systemctl enable keepalived