我正在CoreOS中配置一个具有2个节点的Kubernetes集群，如https://coreos.com/kubernetes/docs/latest/getting-started.html中所述，不带flannel。两台服务器位于同一网络中。

但我得到的是：x509：证书由未知授权机构签名（可能是因为“crypto/rsa：在worker中运行kubelet时，尝试验证候选颁发机构证书“kube-ca”时出现验证错误”）。

我在两台服务器上正确配置了TLS证书，如文档中所述。
主节点工作正常。Kubectl能够在主节点中发射容器和吊舱。
问题1：如何修复此问题？
问题2：有没有办法配置没有TLS证书的群集？

Coreos version:
VERSION=899.15.0
VERSION_ID=899.15.0
BUILD_ID=2016-04-05-1035
PRETTY_NAME="CoreOS 899.15.0"

Etcd配置：

$ etcdctl member list          
ce2a822cea30bfca: name=78c2c701d4364a8197d3f6ecd04a1d8f peerURLs=http://localhost:2380,http://localhost:7001 clientURLs=http://172.24.0.67:2379

主机：kubelet。服务：

[Service]
ExecStartPre=/usr/bin/mkdir -p /etc/kubernetes/manifests
Environment=KUBELET_VERSION=v1.2.2_coreos.0
ExecStart=/opt/bin/kubelet-wrapper \
  --api-servers=http://127.0.0.1:8080 \
  --register-schedulable=false \
  --allow-privileged=true \
  --config=/etc/kubernetes/manifests \
  --hostname-override=172.24.0.67 \
  --cluster-dns=10.3.0.10 \
  --cluster-domain=cluster.local
Restart=always
RestartSec=10
[Install]
WantedBy=multi-user.target

主控制器：kube控制器.yaml

apiVersion: v1
kind: Pod
metadata:
  name: kube-controller-manager
  namespace: kube-system
spec:
  hostNetwork: true
  containers:
  - name: kube-controller-manager
    image: quay.io/coreos/hyperkube:v1.2.2_coreos.0
    command:
    - /hyperkube
    - controller-manager
    - --master=http://127.0.0.1:8080
    - --leader-elect=true 
    - --service-account-private-key-file=/etc/kubernetes/ssl/apiserver-key.pem
    - --root-ca-file=/etc/kubernetes/ssl/ca.pem
    livenessProbe:
      httpGet:
        host: 127.0.0.1
        path: /healthz
        port: 10252
      initialDelaySeconds: 15
      timeoutSeconds: 1
    volumeMounts:
    - mountPath: /etc/kubernetes/ssl
      name: ssl-certs-kubernetes
      readOnly: true
    - mountPath: /etc/ssl/certs
      name: ssl-certs-host
      readOnly: true
  volumes:
  - hostPath:
      path: /etc/kubernetes/ssl
    name: ssl-certs-kubernetes
  - hostPath:
      path: /usr/share/ca-certificates
    name: ssl-certs-host

主机：kube代理.yaml

apiVersion: v1
kind: Pod
metadata:
  name: kube-proxy
  namespace: kube-system
spec:
  hostNetwork: true
  containers:
  - name: kube-proxy
    image: quay.io/coreos/hyperkube:v1.2.2_coreos.0
    command:
    - /hyperkube
    - proxy
    - --master=http://127.0.0.1:8080
    securityContext:
      privileged: true
    volumeMounts:
    - mountPath: /etc/ssl/certs
      name: ssl-certs-host
      readOnly: true
  volumes:
  - hostPath:
      path: /usr/share/ca-certificates
    name: ssl-certs-host

主人：kube-apiserver.yaml

apiVersion: v1
kind: Pod
metadata:
  name: kube-apiserver
  namespace: kube-system
spec:
  hostNetwork: true
  containers:
  - name: kube-apiserver
    image: quay.io/coreos/hyperkube:v1.2.2_coreos.0
    command:
    - /hyperkube
    - apiserver
    - --bind-address=0.0.0.0
    - --etcd-servers=http://172.24.0.67:2379
    - --allow-privileged=true
    - --service-cluster-ip-range=10.3.0.0/24
    - --secure-port=443
    - --advertise-address=172.24.0.67
    - --admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota
    - --tls-cert-file=/etc/kubernetes/ssl/apiserver.pem
    - --tls-private-key-file=/etc/kubernetes/ssl/apiserver-key.pem
    - --client-ca-file=/etc/kubernetes/ssl/ca.pem
    - --service-account-key-file=/etc/kubernetes/ssl/apiserver-key.pem
    ports:
    - containerPort: 443
      hostPort: 443
      name: https
    - containerPort: 8080
      hostPort: 8080
      name: local
    volumeMounts:
    - mountPath: /etc/kubernetes/ssl
      name: ssl-certs-kubernetes
      readOnly: true
    - mountPath: /etc/ssl/certs
      name: ssl-certs-host
      readOnly: true
  volumes:
  - hostPath:
      path: /etc/kubernetes/ssl
    name: ssl-certs-kubernetes
  - hostPath:
      path: /usr/share/ca-certificates
    name: ssl-certs-host

主控件：kube-调度程序.yaml

apiVersion: v1
kind: Pod
metadata:
  name: kube-scheduler
  namespace: kube-system
spec:
  hostNetwork: true
  containers:
  - name: kube-scheduler
    image: quay.io/coreos/hyperkube:v1.2.2_coreos.0
    command:
    - /hyperkube
    - scheduler
    - --master=http://127.0.0.1:8080
    - --leader-elect=true
    livenessProbe:
      httpGet:
        host: 127.0.0.1
        path: /healthz
        port: 10251
      initialDelaySeconds: 15
      timeoutSeconds: 1

从站：kubelet.服务

[Service]
ExecStartPre=/usr/bin/mkdir -p /etc/kubernetes/manifests

Environment=KUBELET_VERSION=v1.2.2_coreos.0 
ExecStart=/opt/bin/kubelet-wrapper \
  --api-servers=https://172.24.0.67:443 \
  --register-node=true \
  --allow-privileged=true \
  --config=/etc/kubernetes/manifests \
  --hostname-override=172.24.0.63 \
  --cluster-dns=10.3.0.10 \
  --cluster-domain=cluster.local \
  --kubeconfig=/etc/kubernetes/worker-kubeconfig.yaml \
  --tls-cert-file=/etc/kubernetes/ssl/worker.pem \
  --tls-private-key-file=/etc/kubernetes/ssl/worker-key.pem
Restart=always
RestartSec=10
[Install]
WantedBy=multi-user.target

从属服务器：kube代理.yaml

apiVersion: v1
kind: Pod
metadata:
  name: kube-proxy
  namespace: kube-system
spec:
  hostNetwork: true
  containers:
  - name: kube-proxy
    image: quay.io/coreos/hyperkube:v1.2.2_coreos.0
    command:
    - /hyperkube
    - proxy
    - --master=https://172.24.0.67:443
    - --kubeconfig=/etc/kubernetes/worker-kubeconfig.yaml
    - --proxy-mode=iptables
    securityContext:
      privileged: true
    volumeMounts:
      - mountPath: /etc/ssl/certs
        name: "ssl-certs"
      - mountPath: /etc/kubernetes/worker-kubeconfig.yaml
        name: "kubeconfig"
        readOnly: true
      - mountPath: /etc/kubernetes/ssl
        name: "etc-kube-ssl"
        readOnly: true
  volumes:
    - name: "ssl-certs"
      hostPath:
        path: "/usr/share/ca-certificates"
    - name: "kubeconfig"
      hostPath:
        path: "/etc/kubernetes/worker-kubeconfig.yaml"
    - name: "etc-kube-ssl"
      hostPath:
        path: "/etc/kubernetes/ssl"