kube-dns 不起作用

Question

我已经创建了集群（Centos 7）并使用 kube-dns 部署了 rc。集群工作正常，但 kube-dns 在日志中打印错误。

    I0817 12:40:01.589924       1 dns.go:299] could not find service for endpoint "kubernetes" in namespace "default"
I0817 12:40:01.591584       1 dns.go:299] could not find service for endpoint "kube-scheduler" in namespace "kube-system"
I0817 12:40:01.591608       1 dns.go:299] could not find service for endpoint "kube-controller-manager" in namespace "kube-system"
I0817 12:40:01.591620       1 dns.go:299] could not find service for endpoint "kube-dns" in namespace "kube-system"

api服务器： ### # Kubernetes 系统配置 # # 以下值用于配置 kube-apiserver #

# The address on the local server to listen to.
KUBE_API_ADDRESS="--address=0.0.0.0"

# The port on the local server to listen on.
KUBE_API_PORT="--port=8080"

# Port minions listen on
KUBELET_PORT="--kubelet-port=10250"

# Comma separated list of nodes in the etcd cluster
KUBE_ETCD_SERVERS="--etcd-servers=http://127.0.0.1:2379"

# Address range to use for services
KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=10.10.150.0/19"

# default admission control policies
KUBE_ADMISSION_CONTROL="NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota"
# Add your own!

主配置文件：

KUBE_LOGTOSTDERR="--logtostderr=true"

ENABLE_CLUSTER_DNS="${KUBE_ENABLE_CLUSTER_DNS:-true}"
DNS_SERVER_IP="10.10.150.250"
DNS_DOMAIN="cluster.local"
DNS_REPLICAS=1

# journal message level, 0 is debug
KUBE_LOG_LEVEL="--v=0"

# Should this cluster be allowed to run privileged docker containers
KUBE_ALLOW_PRIV="--allow-privileged=false"

# How the controller-manager, scheduler, and proxy find the apiserver
KUBE_MASTER="--master=http://127.0.0.1:8080"

有人知道发生了什么吗？）

Answer 1

https://github.com/kubernetes/kubernetes/blob/master/hack/local-up-cluster.sh#L352

KUBE_ENABLE_CLUSTER_DNS 应该为 true，DNS 才能正常工作。 --cluster-dns=10.10.150.250 --cluster_domain=cluster.local

Answer 2

问题出在我的 SELinux 中...当我禁用它并且一切正常时。