⼀：系统准备及优化：

1.1：系统环境：

CentOS 7.x
Debian 9、10、11
Ubuntu 18.04、20.04、22.04
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1.2：主机名：

k8s-master1.example.com 172.31.6.101
k8s-master2.example.com 172.31.6.205
k8s-master3.example.com 172.31.6.206
k8s-node1.example.com 172.31.6.102
k8s-node2.example.com. 172.31.6.103
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各master节点与node节点主机名不可重复

1.3：内核模块：

~# vim /etc/modules-load.d/modules.conf
br_netfilter
ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack
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1.4：内核参数:

# vim /etc/sysctl.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-arptables = 1
net.ipv4.tcp_tw_reuse = 0
net.core.somaxconn = 32768
net.netfilter.nf_conntrack_max=1000000
vm.swappines
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