k8s 集群 搭建过程问题汇总

1. 为k8s集群添加内网域名

修改core-dns 的configmap ，添加hosts

{
	"Corefile": ".:53 {
		    errors
		    health {
		       lameduck 5s
		    }
		    ready
		    kubernetes cluster.local in-addr.arpa ip6.arpa {
		       pods insecure
		       fallthrough in-addr.arpa ip6.arpa
		       ttl 30
		    }
		    hosts {
		      10.210.13.28 registry.gitlab.caicongyang.com
		      10.210.13.28 kas.gitlab.caicongyang.com
		      10.210.13.28 minio.gitlab.caicongyang.com
		      10.210.13.28 gitlab.gitlab.caicongyang.com
		      10.210.13.28 kas.gitlab.caicongyang.com
		      10.210.13.28 minio.gitlab.caicongyang.com
		      10.210.13.28 registry.gitlab.caicongyang.com
		      10.210.13.28 gitlab.gitlab.caicongyang.com
		      fallthrough
		    }
		    prometheus :9153
		    forward . /etc/resolv.conf {
		       max_concurrent 1000
		    }
		    cache 30
		    loop
		    reload
		    loadbalance
		}
		"
}

2. 修改apiserver server端口号，支持NodePort 指向80

修改master 节点 vim /etc/kubernetes/manifests/kube-apiserver.yaml

- --service-node-port-range=1-65535

然后记得重启  （此处我是kubeadmin 安装的k8s 集群）

kubectl delete pod -n kube-system kube-apiserver-xxxxx

删除pod 完后，会自动重启