EOF

# 启动etcd
systemctl enable etcd && systemctl start etcd

# 验证集群状态
etcdctl --endpoints=https://10.0.0.11:2379 --cacert=/etc/kubernetes/pki/etcd/ca.crt --cert=/etc/kubernetes/pki/etcd/server.crt --key=/etc/kubernetes/pki/etcd/server.key member list

四、部署HAProxy+Keepalived负载均衡

在Master节点上安装：

# 安装HAProxy和Keepalived
yum install -y haproxy keepalived

# 配置HAProxy（/etc/haproxy/haproxy.cfg）
global
    log /dev/log local0
    maxconn 2000
    user haproxy
    group haproxy
defaults
    log global
    mode tcp
    option tcplog
    timeout connect 5000
    timeout client 50000
    timeout server 50000
frontend k8s-api
    bind *:6443
    default_backend k8s-masters
backend k8s-masters
    balance roundrobin
    server master1 10.0.0.11:6443 check inter 3s fall 3 rise 5
    server master2 10.0.0.12:6443 check inter 3s fall 3 rise 5
    server master3 10.0.0.13:6443 check inter 3s fall 3 rise 5

# 配置Keepalived（主节点，其他节点修改priority和unicast_src_ip）
vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1234
    }
    unicast_peer {
        10.0.0.12
        10.0.0.13
    }
    virtual_ipaddress {
        10.0.0.100/24
    }
}

启动服务：systemctl enable haproxy keepalived && systemctl restart haproxy keepalived。验证VIP：ip a | grep 10.0.0.100。

五、安装Kubernetes控制平面

使用kubeadm初始化集群：

# 安装kubeadm、kubelet、kubectl（天亿互联镜像源）
cat < /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.tianyi.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
EOF
yum install -y kubelet kubeadm kubectl
systemctl enable kubelet

# 在第一个Master节点初始化
kubeadm init --control-plane-endpoint

天亿互联：Kubernetes集群高可用部署实战教程

天亿互联：Kubernetes集群高可用部署实战教程

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