docker2 k8s 主控节点api-server proxy L4反代 6

10.4.7.11/12两台安装nginx
yum install nginx -y
配置nginx配置
vim /etc/nginx/nginx.conf 配置放在文件最后
stream {
upstream kube-apiserver {
server 10.4.7.21:6443 max_fails=3 fail_timeout=30s;
server 10.4.7.22:6443 max_fails=3 fail_timeout=30s;
}
server {
listen 7443;
proxy_connect_timeout 2s;
proxy_timeout 900s;
proxy_pass kube-apiserver;
}
}
检查并启动nginx
nginx -t
systemctl start nginx
systemctl enable nginx
安装keepalive 浮动ip 10.4.7.10
yum install keepalived -y
创建keepalive监听脚本
vi /etc/keepalived/check_port.sh 两台都要创建监听脚本
#!/bin/bash
CHK_PORT=$1
if [ -n "$CHK_PORT" ];then
PORT_PROCESS=`ss -lnt|grep $CHK_PORT|wc -l`
if [ $PORT_PROCESS -eq 0 ];then
echo "Port $CHK_PORT Is Not Used,End."
exit 1
fi
else
echo "Check Port Cant Be Empty!"
fi
脚本赋予权限
chmod +x /etc/keepalived/check_port.sh

配置keepalive主配置7.11
vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
router_id 10.4.7.11

}

vrrp_script chk_nginx {
script "/etc/keepalived/check_port.sh 7443"
interval 2
weight -20
}

vrrp_instance VI_1 {
state MASTER
interface ens33 #注意网卡名称
virtual_router_id 251
priority 100
advert_int 1
mcast_src_ip 10.4.7.11
nopreempt

authentication {
auth_type PASS
auth_pass 11111111
}
track_script {
chk_nginx
}
virtual_ipaddress {
10.4.7.10
}
}
配置keepalive从配置7.12
vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
router_id 10.4.7.12

}

vrrp_script chk_nginx {
script "/etc/keepalived/check_port.sh 7443"
interval 2
weight -20
}

vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 251
priority 90
advert_int 1
mcast_src_ip 10.4.7.12

authentication {
auth_type PASS
auth_pass 11111111
}
track_script {
chk_nginx
}
virtual_ipaddress {
10.4.7.10
}
}

启动keepalive
systemctl start keepalived
systemctl enable keepalived

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docker2 k8s 主控节点api-server proxy L4反代 6

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