upstream kube_backend {
    server 10.1.2.13:6443 max_fails=2 fail_timeout=30s;
    server 10.1.2.14:6443 max_fails=2 fail_timeout=30s;
    server 10.1.2.15:6443 max_fails=2 fail_timeout=30s;
}

server {
    access_log /var/log/nginx/nginx_stream_access.log basic;
    error_log /var/log/nginx/nginx_stream_error.log warn;

    listen 6443;
    proxy_pass kube_backend;
}