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I have a problem when I install the kube-dns add on. My OS is CentOS Linux release 7.0.1406 (Core)
Kernel:Linux master 3.10.0-693.el7.x86_64 #1 SMP Tue Aug 22 21:09:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
My api-server config:
###
# kubernetes system config
#
# The following values are used to configure the kube-apiserver
#
# The address on the local server to listen to.
#KUBE_API_ADDRESS="--insecure-bind-address=177.1.1.40"
# The port on the local server to listen on.
KUBE_API_PORT="--secure-port=443"
# Port minions listen on
KUBELET_PORT="--kubelet-port=10250"
# Comma separated list of nodes in the etcd cluster
KUBE_ETCD_SERVERS="--etcd-servers=http://master:2379"
# Address range to use for services
KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=10.254.0.0/16"
# default admission control policies
KUBE_ADMISSION_CONTROL="--enable-admission-plugins=AlwaysAdmit,NamespaceLifecycle,LimitRanger,SecurityContextDeny,ResourceQuota,ServiceAccount"
# Add your own!
KUBE_API_ARGS="--client-ca-file=/etc/kubernetes/k8s-certs/CA/rootCA.crt --tls-private-key-file=/etc/kubernetes/k8s-certs/master/api-server.pem --tls-cert-file=/etc/kubernetes/k8s-certs/master/api-server.crt"
The api-server authorization-mode is set to AlwaysAllow
Sep 29 17:31:22 master kube-apiserver: I0929 17:31:22.952730 1311 flags.go:27] FLAG: --authorization-mode="AlwaysAllow"
My kube-dns config YAML file is :
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
apiVersion: v1
kind: Service
metadata:
name: kube-dns
namespace: kube-system
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "KubeDNS"
spec:
selector:
k8s-app: kube-dns
clusterIP: 10.254.0.10
ports:
- name: dns
port: 53
protocol: UDP
- name: dns-tcp
port: 53
protocol: TCP
---
#apiVersion: rbac.authorization.k8s.io/v1
#kind: RoleBinding
#metadata:
# name: kube-dns
# namespace: kube-system
#roleRef:
# apiGroup: rbac.authorization.k8s.io
# kind: ClusterRole
# name: Cluster-admin
#subjects:
#- kind: ServiceAccount
# name: default
# namespace: kube-system
#---
#apiVersion: v1
#kind: ServiceAccount
#metadata:
# name: kube-dns
# namespace: kube-system
# labels:
# kubernetes.io/cluster-service: "true"
# addonmanager.kubernetes.io/mode: Reconcile
---
apiVersion: v1
kind: ConfigMap
metadata:
name: kube-dns
namespace: kube-system
labels:
addonmanager.kubernetes.io/mode: EnsureExists
---
apiVersion: v1
kind: ConfigMap
metadata:
name: kubecfg-file
namespace: kube-system
labels:
addonmanager.kubernetes.io/mode: EnsureExists
data:
kubecfg-file: |
apiVersion: v1
kind: Config
clusters:
- cluster:
certificate-authority: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
server: https://177.1.1.40:443
name: kube-test
users:
- name: kube-admin
user:
token: /var/run/secrets/kubernetes.io/serviceaccount/token
contexts:
- context:
cluster: kube-test
namespace: default
user: kube-admin
name: test-context
current-context: test-context
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: kube-dns
namespace: kube-system
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
# replicas: not specified here:
# 1. In order to make Addon Manager do not reconcile this replicas parameter.
# 2. Default is 1.
# 3. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
strategy:
rollingUpdate:
maxSurge: 10%
maxUnavailable: 0
selector:
matchLabels:
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: kube-dns
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
volumes:
- name: kube-dns-config
configMap:
name: kube-dns
optional: true
- name: kube-kubecfg-file
configMap:
name: kubecfg-file
optional: true
containers:
- name: kubedns
image: 177.1.1.35/library/kube-dns:1.14.8
resources:
# TODO: Set memory limits when we've profiled the container for large
# clusters, then set request = limit to keep this container in
# guaranteed class. Currently, this container falls into the
# "burstable" category so the kubelet doesn't backoff from restarting it.
limits:
memory: 170Mi
requests:
cpu: 100m
memory: 70Mi
livenessProbe:
httpGet:
path: /healthcheck/kubedns
port: 10054
scheme: HTTP
initialDelaySeconds: 60
timeoutSeconds: 5
successThreshold: 1
failureThreshold: 5
readinessProbe:
httpGet:
path: /readiness
port: 8081
scheme: HTTP
# we poll on pod startup for the Kubernetes master service and
# only setup the /readiness HTTP server once that's available.
initialDelaySeconds: 3
timeoutSeconds: 5
args:
- --domain=cluster.local.
- --dns-port=10053
- --config-dir=/kube-dns-config
- --kubecfg-file=/kubecfg-file/kubecfg-file
- --kube-master-url=https://10.254.0.1:443
- --v=2
env:
- name: PROMETHEUS_PORT
value: "10055"
ports:
- containerPort: 10053
name: dns-local
protocol: UDP
- containerPort: 10053
name: dns-tcp-local
protocol: TCP
- containerPort: 10055
name: metrics
protocol: TCP
volumeMounts:
- name: kube-dns-config
mountPath: /kube-dns-config
- name: kube-kubecfg-file
mountPath: /kubecfg-file
- name: dnsmasq
image: 177.1.1.35/library/dnsmasq:1.14.8
livenessProbe:
httpGet:
path: /healthcheck/dnsmasq
port: 10054
scheme: HTTP
initialDelaySeconds: 60
timeoutSeconds: 5
successThreshold: 1
failureThreshold: 5
args:
- -v=2
- -logtostderr
- -configDir=/etc/k8s/dns/dnsmasq-nanny
- -restartDnsmasq=true
- --
- -k
- --cache-size=1000
- --no-negcache
- --log-facility=-
- --server=/cluster.local/127.0.0.1#10053
- --server=/in-addr.arpa/127.0.0.1#10053
- --server=/ip6.arpa/127.0.0.1#10053
ports:
- containerPort: 53
name: dns
protocol: UDP
- containerPort: 53
name: dns-tcp
protocol: TCP
# see: https://github.com/kubernetes/kubernetes/issues/29055 for details
resources:
requests:
cpu: 150m
memory: 20Mi
volumeMounts:
- name: kube-dns-config
mountPath: /etc/k8s/dns/dnsmasq-nanny
- name: sidecar
image: 177.1.1.35/library/sidecar:1.14.8
livenessProbe:
httpGet:
path: /metrics
port: 10054
scheme: HTTP
initialDelaySeconds: 60
timeoutSeconds: 5
successThreshold: 1
failureThreshold: 5
args:
- --v=2
- --logtostderr
- --probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.cluster.local,5,SRV
- --probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.cluster.local,5,SRV
ports:
- containerPort: 10054
name: metrics
protocol: TCP
resources:
requests:
memory: 20Mi
cpu: 10m
dnsPolicy: Default # Don't use cluster DNS.
#serviceAccountName: kube-dns
When I start the kube-dns the kubedns container log:
I0929 09:33:22.666182 1 dns.go:48] version: 1.14.8
I0929 09:33:22.668521 1 server.go:71] Using configuration read from directory: /kube-dns-config with period 10s
I0929 09:33:22.668586 1 server.go:119] FLAG: --alsologtostderr="false"
I0929 09:33:22.668604 1 server.go:119] FLAG: --config-dir="/kube-dns-config"
I0929 09:33:22.668613 1 server.go:119] FLAG: --config-map=""
I0929 09:33:22.668619 1 server.go:119] FLAG: --config-map-namespace="kube-system"
I0929 09:33:22.668629 1 server.go:119] FLAG: --config-period="10s"
I0929 09:33:22.668637 1 server.go:119] FLAG: --dns-bind-address="0.0.0.0"
I0929 09:33:22.668643 1 server.go:119] FLAG: --dns-port="10053"
I0929 09:33:22.668662 1 server.go:119] FLAG: --domain="cluster.local."
I0929 09:33:22.668671 1 server.go:119] FLAG: --federations=""
I0929 09:33:22.668683 1 server.go:119] FLAG: --healthz-port="8081"
I0929 09:33:22.668689 1 server.go:119] FLAG: --initial-sync-timeout="1m0s"
I0929 09:33:22.668695 1 server.go:119] FLAG: --kube-master-url="https://10.254.0.1:443"
I0929 09:33:22.668707 1 server.go:119] FLAG: --kubecfg-file="/kubecfg-file/kubecfg-file"
I0929 09:33:22.668714 1 server.go:119] FLAG: --log-backtrace-at=":0"
I0929 09:33:22.668727 1 server.go:119] FLAG: --log-dir=""
I0929 09:33:22.668733 1 server.go:119] FLAG: --log-flush-frequency="5s"
I0929 09:33:22.668739 1 server.go:119] FLAG: --logtostderr="true"
I0929 09:33:22.668744 1 server.go:119] FLAG: --nameservers=""
I0929 09:33:22.668754 1 server.go:119] FLAG: --stderrthreshold="2"
I0929 09:33:22.668760 1 server.go:119] FLAG: --v="2"
I0929 09:33:22.668765 1 server.go:119] FLAG: --version="false"
I0929 09:33:22.668774 1 server.go:119] FLAG: --vmodule=""
I0929 09:33:22.668831 1 server.go:201] Starting SkyDNS server (0.0.0.0:10053)
I0929 09:33:22.669125 1 server.go:220] Skydns metrics enabled (/metrics:10055)
I0929 09:33:22.669170 1 dns.go:146] Starting endpointsController
I0929 09:33:22.669181 1 dns.go:149] Starting serviceController
I0929 09:33:22.669508 1 logs.go:41] skydns: ready for queries on cluster.local. for tcp://0.0.0.0:10053 [rcache 0]
I0929 09:33:22.669523 1 logs.go:41] skydns: ready for queries on cluster.local. for udp://0.0.0.0:10053 [rcache 0]
E0929 09:33:22.695489 1 reflector.go:201] k8s.io/dns/pkg/dns/dns.go:147: Failed to list *v1.Endpoints: Unauthorized
E0929 09:33:22.696267 1 reflector.go:201] k8s.io/dns/pkg/dns/dns.go:150: Failed to list *v1.Service: Unauthorized
I0929 09:33:23.169540 1 dns.go:173] Waiting for services and endpoints to be initialized from apiserver...
I0929 09:33:23.670206 1 dns.go:173] Waiting for services and endpoints to be initialized from apiserver...
After few minutes the pod crash.
kubectl describe pod -n kube-system kube-dns-b7d556f59-h8xqp
Name: kube-dns-b7d556f59-h8xqp
Namespace: kube-system
Node: node3/177.1.1.43
Start Time: Sat, 29 Sep 2018 17:50:17 +0800
Labels: k8s-app=kube-dns
pod-template-hash=638112915
Annotations: scheduler.alpha.kubernetes.io/critical-pod=
Status: Running
IP: 172.30.59.3
Controlled By: ReplicaSet/kube-dns-b7d556f59
Containers:
kubedns:
Container ID: docker://5d62497e0c966c08d4d8c56f7a52e2046fd05b57ec0daf34a7e3cd813e491f09
Image: 177.1.1.35/library/kube-dns:1.14.8
Image ID: docker-pullable://177.1.1.35/library/kube-dns@sha256:6d8e0da4fb46e9ea2034a3f4cab0e095618a2ead78720c12e791342738e5f85d
Ports: 10053/UDP, 10053/TCP, 10055/TCP
Host Ports: 0/UDP, 0/TCP, 0/TCP
Args:
--domain=cluster.local.
--dns-port=10053
--config-dir=/kube-dns-config
--kubecfg-file=/kubecfg-file/kubecfg-file
--kube-master-url=https://10.254.0.1:443
--v=2
State: Running
Started: Sat, 29 Sep 2018 17:50:20 +0800
Ready: False
Restart Count: 0
Limits:
memory: 170Mi
Requests:
cpu: 100m
memory: 70Mi
Liveness: http-get http://:10054/healthcheck/kubedns delay=60s timeout=5s period=10s #success=1 #failure=5
Readiness: http-get http://:8081/readiness delay=3s timeout=5s period=10s #success=1 #failure=3
Environment:
PROMETHEUS_PORT: 10055
Mounts:
/kube-dns-config from kube-dns-config (rw)
/kubecfg-file from kube-kubecfg-file (rw)
/var/run/secrets/kubernetes.io/serviceaccount from default-token-dsxql (ro)
dnsmasq:
Container ID: docker://17ae73b52eb69c35a027cb5645a3801d649b262a8650862d64e7959a22c8e92e
Image: 177.1.1.35/library/dnsmasq:1.14.8
Image ID: docker-pullable://177.1.1.35/library/dnsmasq@sha256:93c827f018cf3322f1ff2aa80324a0306048b0a69bc274e423071fb0d2d29d8b
Ports: 53/UDP, 53/TCP
Host Ports: 0/UDP, 0/TCP
Args:
-v=2
-logtostderr
-configDir=/etc/k8s/dns/dnsmasq-nanny
-restartDnsmasq=true
--
-k
--cache-size=1000
--no-negcache
--log-facility=-
--server=/cluster.local/127.0.0.1#10053
--server=/in-addr.arpa/127.0.0.1#10053
--server=/ip6.arpa/127.0.0.1#10053
State: Running
Started: Sat, 29 Sep 2018 17:50:21 +0800
Ready: True
Restart Count: 0
Requests:
cpu: 150m
memory: 20Mi
Liveness: http-get http://:10054/healthcheck/dnsmasq delay=60s timeout=5s period=10s #success=1 #failure=5
Environment: <none>
Mounts:
/etc/k8s/dns/dnsmasq-nanny from kube-dns-config (rw)
/var/run/secrets/kubernetes.io/serviceaccount from default-token-dsxql (ro)
sidecar:
Container ID: docker://9449b13ff4e4ba1331d181bd6f309a34a4f3da1ce536c61af7a65664e3ad803a
Image: 177.1.1.35/library/sidecar:1.14.8
Image ID: docker-pullable://177.1.1.35/library/sidecar@sha256:23df717980b4aa08d2da6c4cfa327f1b730d92ec9cf740959d2d5911830d82fb
Port: 10054/TCP
Host Port: 0/TCP
Args:
--v=2
--logtostderr
--probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.cluster.local,5,SRV
--probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.cluster.local,5,SRV
State: Running
Started: Sat, 29 Sep 2018 17:50:22 +0800
Ready: True
Restart Count: 0
Requests:
cpu: 10m
memory: 20Mi
Liveness: http-get http://:10054/metrics delay=60s timeout=5s period=10s #success=1 #failure=5
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-dsxql (ro)
Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes:
kube-dns-config:
Type: ConfigMap (a volume populated by a ConfigMap)
Name: kube-dns
Optional: true
kube-kubecfg-file:
Type: ConfigMap (a volume populated by a ConfigMap)
Name: kubecfg-file
Optional: true
default-token-dsxql:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-dsxql
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: CriticalAddonsOnly
node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal SuccessfulMountVolume 3m kubelet, node3 MountVolume.SetUp succeeded for volume "kube-dns-config"
Normal SuccessfulMountVolume 3m kubelet, node3 MountVolume.SetUp succeeded for volume "kube-kubecfg-file"
Normal SuccessfulMountVolume 3m kubelet, node3 MountVolume.SetUp succeeded for volume "default-token-dsxql"
Normal Pulled 3m kubelet, node3 Container image "177.1.1.35/library/kube-dns:1.14.8" already present on machine
Normal Created 3m kubelet, node3 Created container
Normal Started 3m kubelet, node3 Started container
Normal Pulled 3m kubelet, node3 Container image "177.1.1.35/library/dnsmasq:1.14.8" already present on machine
Normal Created 3m kubelet, node3 Created container
Normal Started 3m kubelet, node3 Started container
Normal Pulled 3m kubelet, node3 Container image "177.1.1.35/library/sidecar:1.14.8" already present on machine
Normal Created 3m kubelet, node3 Created container
Normal Started 3m kubelet, node3 Started container
Warning Unhealthy 3m (x3 over 3m) kubelet, node3 Readiness probe failed: Get http://172.30.59.3:8081/readiness: dial tcp 172.30.59.3:8081: getsockopt: connection refused
Normal Scheduled 43s default-scheduler Successfully assigned kube-dns-b7d556f59-h8xqp to node3
My kubernetes version is:
kubectl version
Client Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.0", GitCommit:"fc32d2f3698e36b93322a3465f63a14e9f0eaead", GitTreeState:"archive", BuildDate:"2018-03-29T08:38:42Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.0", GitCommit:"fc32d2f3698e36b93322a3465f63a14e9f0eaead", GitTreeState:"archive", BuildDate:"2018-03-29T08:38:42Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"linux/amd64"}
docker version:
docker version
Client:
Version: 1.13.1
API version: 1.26
Package version: <unknown>
Go version: go1.8.3
Git commit: 774336d/1.13.1
Built: Wed Mar 7 17:06:16 2018
OS/Arch: linux/amd64
Server:
Version: 1.13.1
API version: 1.26 (minimum version 1.12)
Package version: <unknown>
Go version: go1.8.3
Git commit: 774336d/1.13.1
Built: Wed Mar 7 17:06:16 2018
OS/Arch: linux/amd64
Experimental: false
My kubernetes service config: api-server
/usr/bin/kube-apiserver --logtostderr=true --v=4 --etcd-servers=http://master:2379 --secure-port=443 --kubelet-port=10250 --allow-privileged=false --service-cluster-ip-range=10.254.0.0/16 --enable-admission-plugins=AlwaysAdmit,NamespaceLifecycle,LimitRanger,SecurityContextDeny,ResourceQuota,ServiceAccount --client-ca-file=/etc/kubernetes/k8s-certs/CA/rootCA.crt --tls-private-key-file=/etc/kubernetes/k8s-certs/master/api-server.pem --tls-cert-file=/etc/kubernetes/k8s-certs/master/api-server.crt
controller-manager:
/usr/bin/kube-controller-manager --logtostderr=true --v=4 --master=https://master:443 --root-ca-file=/etc/kubernetes/k8s-certs/CA/rootCA.crt --service-account-private-key-file=/etc/kubrnetes/k8s-certs/master/api-server.pem --kubeconfig=/etc/kubernetes/cs_kubeconfig
###
# kubernetes system config
#
# The following values are used to configure the kube-apiserver
#
# The address on the local server to listen to.
#KUBE_API_ADDRESS="--insecure-bind-address=177.1.1.40"
# The port on the local server to listen on.
KUBE_API_PORT="--secure-port=443"
# Port minions listen on
KUBELET_PORT="--kubelet-port=10250"
# Comma separated list of nodes in the etcd cluster
KUBE_ETCD_SERVERS="--etcd-servers=http://master:2379"
# Address range to use for services
KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=10.254.0.0/16"
# default admission control policies
KUBE_ADMISSION_CONTROL="--enable-admission-plugins=AlwaysAdmit,NamespaceLifecycle,LimitRanger,SecurityContextDeny,ResourceQuota,ServiceAccount"
# Add your own!
KUBE_API_ARGS="--client-ca-file=/etc/kubernetes/k8s-certs/CA/rootCA.crt --tls-private-key-file=/etc/kubernetes/k8s-certs/master/api-server.pem --tls-cert-file=/etc/kubernetes/k8s-certs/master/api-server.crt"
[root@master ~]# cat /etc/kubernetes/controller-manager
###
# The following values are used to configure the kubernetes controller-manager
# defaults from config and apiserver should be adequate
#--root-ca-file=/var/run/kubernetes/CA/rootCA.crt --service-account-private-key-file=/var/run/kubernetes/controler_scheduler/cs_client.crt
# Add your own!
KUBE_CONTROLLER_MANAGER_ARGS= "--root-ca-file=/etc/kubernetes/k8s-certs/CA/rootCA.crt --service-account-private-key-file=/etc/kubernetes/k8s-certs/master/api-server.pem --kubeconfig=/etc/kubernetes/cs_kubeconfig"
scheduler:
/usr/bin/kube-scheduler --logtostderr=true --v=4 --master=https://master:443 --kubeconfig=/etc/kubernetes/cs_kubeconfig
###
# kubernetes scheduler config
# default config should be adequate
# Add your own!
KUBE_SCHEDULER_ARGS="--kubeconfig=/etc/kubernetes/cs_kubeconfig"
common config:
###
# kubernetes system config
#
# The following values are used to configure various aspects of all
# kubernetes services, including
#
# kube-apiserver.service
# kube-controller-manager.service
# kube-scheduler.service
# kubelet.service
# kube-proxy.service
# logging to stderr means we get it in the systemd journal
KUBE_LOGTOSTDERR="--logtostderr=true"
# journal message level, 0 is debug
KUBE_LOG_LEVEL="--v=4"
# 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=https://master:443"
kubelet:
/usr/bin/kubelet --logtostderr=true --v=4 --cluster-dns=10.254.0.10 --cluster-domain=cluster.local --hostname-override=master --allow-privileged=false --cgroup-driver=systemd --fail-swap-on=false --pod_infra_container_image=177.1.1.35/library/pause:latest --kubeconfig=/etc/kubernetes/kp_kubeconfig
###
# kubernetes kubelet (minion) config
# The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces)
#KUBELET_ADDRESS="--address=0.0.0.0"
# The port for the info server to serve on
# KUBELET_PORT="--port=10250"
# You may leave this blank to use the actual hostname
KUBELET_HOSTNAME="--hostname-override=master"
#KUBELET_API_SERVER="--api-servers=http://master:8080
#KUBECONFIG="--kubeconfig=/root/.kube/config-demo"
KUBECONFIG="--kubeconfig=/etc/kubernetes/kp_kubeconfig"
KUBELET_DNS="--cluster-dns=10.254.0.10"
KUBELET_DOMAIN="--cluster-domain=cluster.local"
# Add your own!
KUBELET_ARGS="--cgroup-driver=systemd --fail-swap-on=false --pod_infra_container_image=177.1.1.35/library/pause:latest"
kube-proxy:
/usr/bin/kube-proxy --logtostderr=true --v=4 --master=https://master:443 --kubeconfig=/etc/kubernetes/kp_kubeconfig
###
# kubernetes proxy config
# default config should be adequate
# Add your own!
KUBE_PROXY_ARGS="--kubeconfig=/etc/kubernetes/kp_kubeconfig"
controller-manager & scheduler kubeconfig file:
apiVersion: v1
kind: Config
users:
- name: controllermanger
user:
client-certificate: /etc/kubernetes/k8s-certs/controler_scheduler/cs_client.crt
client-key: /etc/kubernetes/k8s-certs/controler_scheduler/cs_client.pem
clusters:
- cluster:
certificate-authority: /etc/kubernetes/k8s-certs/CA/rootCA.crt
server: https://master:443
name: kubernetes
contexts:
- context:
cluster: kubernetes
user: controllermanger
name: cs-context
current-context: cs-context
kubelet & kube-proxy kubeconfig file:
apiVersion: v1
kind: Config
users:
- name: kubelet
user:
client-certificate: /etc/kubernetes/k8s-certs/kubelet_proxy/kp_client.crt
client-key: /etc/kubernetes/k8s-certs/kubelet_proxy/kp_client.pem
clusters:
- name: kubernetes
cluster:
certificate-authority: /etc/kubernetes/k8s-certs/CA/rootCA.crt
server: https://master:443
contexts:
- context:
cluster: kubernetes
user: kubelet
name: kp-context
current-context: kp-context
APISERVER logs:
authentication.go:63] Unable to authenticate the request due to an error: [invalid bearer token, [invalid bearer token, invalid bearer token]]
authentication.go:63] Unable to authenticate the request due to an error: [invalid bearer token, [invalid bearer token, Token has been invalidated]]
I tried ues the normal pod to access the apiserver using:
curl --cacert /var/run/secrets/kubernetes.io/serviceaccount/ca.crt -H "Authorization: Bearer $(cat /var/run/secrets/kubernetes.io/serviceaccount/token)" https://10.254.0.1:443
It's successed and return data.
212
Not directly related to this problem, but with the same error (Failed to list *v1.Endpoints: Unauthorized), but it may be useful for someone while searching:
If in the master, kube-apiserver.log show this error:
E1022 14:13:35.488259 1 reflector.go:125] k8s.io/client-go/informers/factory.go:131: Failed to list *v1.ServiceAccount: Get https://[::1]:443/api/v1/serviceaccounts?limit=500&resourceVersion=0: dial tcp [::1]:443: connect: cannot assign requested address
then the problem is a disabled ipv6 in the kubernetes master when it was enabled during install.
Doing this in the kubernetes masters fix the problem:
sudo sysctl net.ipv6.conf.all.disable_ipv6=0
After this, running ip -6 a should show basic IPv6 support, namely the lo interface with ::1
76
Inside your kube-dns config, you have #serviceAccountName: kube-dns commented out, remove the comment.
Also make sure you are using system:serviceaccount:kube-system:kube-dns and have correct RBAC.
For more information, you can check this GitHub issue #50799.
44
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