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[root@lb-ma ~]# cat > /etc/yum.repos.d/nginx.repo <<EOF
[nginx]
name=nginx-repo
baseurl=http://nginx.org/packages/centos/7/$basearch/
gpgcheck=0
EOF

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[root@lb-ma ~]# yum install nginx -y
#添加stream模块实现四层转发
[root@lb-ma ~]# vim /etc/nginx/nginx.conf
###添加
stream {
log_format
main
'$remote_addr $upstream_addr - [$time_local] $status $upstream_bytes_sent';
access_log
/var/log/nginx/k8s-access.log
main;
upstream k8s-apiserver {
server 192.168.142.220:6443;
server 192.168.142.120:6443;
}
server {
listen 6443;
proxy_pass k8s-apiserver;
}
}
#开启服务
[root@lb-ma ~]# systemctl start nginx
[root@lb-ma ~]# systemctl enable nginx

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[root@lb-ma ~]# yum -y install keepalived
##修改keepalived配置文件
[root@lb-ma ~]# vim /etc/keepalived/keepalived.conf
###原本的全部删除，按下面新建
! Configuration File for keepalived
global_defs {
# 接收邮件地址
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
# 邮件发送地址
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id NGINX_MASTER
}
vrrp_script check_nginx {
script "/usr/local/nginx/sbin/check_nginx.sh"
}
vrrp_instance VI_1 {
state MASTER
#备服务器改为BACKUP
interface ens33
#监控ens33网卡
virtual_router_id 51 # VRRP 路由 ID实例，每个实例是唯一的
priority 100
# 优先级，备服务器设置 90
advert_int 1
# 指定VRRP 心跳包通告间隔时间，默认1秒
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.142.20/24
#VIP地址
}
track_script {
check_nginx
}
}

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[root@lb-ma ~]# mkdir -p /usr/local/nginx/sbin/
[root@lb-ma ~]# vim /usr/local/nginx/sbin/check_nginx.sh
##手动进行编写
count=$(ps -ef |grep nginx |egrep -cv "grep|$$")
if [ "$count" -eq 0 ];then
systemctl stop keepalived
fi
[root@lb-ma ~]# chmod +x /usr/local/nginx/sbin/check_nginx.sh
#开启keeplived
[root@lb-ma ~]# systemctl start keepalived
[root@lb-ma ~]# systemctl enable keepalived

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[root@node1 ~]# vim /opt/kubernetes/cfg/bootstrap.kubeconfig
[root@node1 ~]# vim /opt/kubernetes/cfg/kube-proxy.kubeconfig
[root@node1 ~]# vim /opt/kubernetes/cfg/kubelet.kubeconfig
##三个文件全部改为
server: https://192.168.142.20:6443
#指向VIP地址

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[root@node1 ~]# systemctl restart kubelet
[root@node1 ~]# systemctl restart kube-proxy

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[root@master ~]# kubectl run nginx --image=nginx
##建立pod
kubectl run --generator=deployment/apps.v1beta1 is DEPRECATED and will be removed in a future version. Use kubectl create instead.
deployment.apps/nginx created
#查看建立打的pod
[root@master ~]# kubectl get pods
NAME
READY
STATUS
RESTARTS
AGE
nginx-dbddb74b8-7tdvp
1/1
Running
0
21s

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#注意日志问题
[root@master ~]# kubectl logs nginx-dbddb74b8-7tdvp
Error from server (Forbidden): Forbidden (user=system:anonymous, verb=get, resource=nodes, subresource=proxy) ( pods/log nginx-dbddb74b8-7tdvp)
###解决办法：
[root@master ~]# kubectl create clusterrolebinding cluster-system-anonymous --clusterrole=cluster-admin --user=system:anonymous
clusterrolebinding.rbac.authorization.k8s.io/cluster-system-anonymous created