kubeadm安装k8s v1.18.2
reference //参考
环境规划
- CentOS Linux release 7.5.1804 (Core) //centos7理论都是可以的
- 4G/2C
- master 192.168.3.104 node 192.168.3.105 //online to network
- docker-ce 18.06.3 kubernetes v1.18.2
准备工作
all server done
- selinux
- hosts
- firewalld
- swap
- ntp
- yum
selinux
[root@c-3-104 ~]# getenforce
Disabled
[root@c-3-104 ~]# setenforce 0
setenforce: SELinux is disabled
[root@c-3-104 ~]# cat /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of three two values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
hosts
[root@c-3-104 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.3.104 c-3-104
[root@c-3-105 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.3.105 c-3-105
firewalld
[root@c-3-105 ~]# systemctl disable firewalld
[root@c-3-105 ~]#
[root@c-3-105 ~]# systemctl stop firewalld
[root@c-3-105 ~]#
[root@c-3-105 ~]# systemctl status firewalld
● firewalld.service
Loaded: masked (/dev/null; bad)
Active: inactive (dead)
[root@c-3-105 ~]#
swap
[root@c-3-105 ~]# swapoff -a
[root@c-3-105 ~]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Sat Apr 11 11:14:30 2020
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=d6c43c7e-ad98-4c7b-ae13-a0a21ad5ed8e / xfs defaults 0 0
UUID=05af1f32-2c02-4d59-b061-b63b20c4e878 /boot xfs defaults 0 0
#/dev/mapper/centos-swap swap swap defaults 0 0
[root@c-3-105 ~]#
[root@c-3-105 ~]# free -m
total used free shared buff/cache available
Mem: 3773 97 3532 11 142 3467
Swap: 0 0 0
[root@c-3-105 ~]#
ntp
[root@c-3-104 ~]# crontab -l
*/20 * * * * /usr/sbin/ntpdate ntpupdate.tencentyun.com &>/dev/null && /usr/sbin/hwclock -w
[root@c-3-104 ~]# whereis ntpdate
ntpdate: /usr/sbin/ntpdate /usr/share/man/man8/ntpdate.8.gz
[root@c-3-104 ~]#
[root@c-3-104 ~]# date -R
Wed, 27 May 2020 12:08:47 +0800
[root@c-3-104 ~]# /usr/sbin/ntpdate ntpupdate.tencentyun.com &>/dev/null && /usr/sbin/hwclock -w
[root@c-3-104 ~]# date
Wed May 27 12:08:52 CST 2020
yum
base/epel
link
docker-ce*
link
k8s
[root@master01 ~]# cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
yum clean all && yum makecache
docker-ce && kubeadm
docker-ce二进制安装
docker-ce yum安装
kubeadm
[root@c-3-104 ~]# yum list kubeadm --show-duplicate |grep 1.18
kubeadm.x86_64 1.18.0-0 kubernetes
kubeadm.x86_64 1.18.1-0 kubernetes
kubeadm.x86_64 1.18.2-0 kubernetes
kubeadm.x86_64 1.18.3-0 kubernetes
[root@c-3-104 ~]# yum install -y kubeadm kubelet kubectl
[root@c-3-104 ~]# systemctl enable kubelet
Created symlink from /etc/systemd/system/multi-user.target.wants/kubelet.service to /usr/lib/systemd/system/kubelet.service.
[root@c-3-104 ~]#
master
kubeadm init
kubeadm init --kubernetes-version=1.18.2 \
--apiserver-advertise-address=192.168.3.104 \
--image-repository registry.aliyuncs.com/google_containers \
--service-cidr=10.10.0.0/16 --pod-network-cidr=10.20.0.0/16
[root@c-3-104 ~]# kubeadm init --kubernetes-version=1.18.2 \
> --apiserver-advertise-address=192.168.3.104 \
> --image-repository registry.aliyuncs.com/google_containers \
> --service-cidr=10.10.0.0/16 --pod-network-cidr=10.20.0.0/16
W0527 13:13:50.045479 13148 configset.go:202] WARNING: kubeadm cannot validate component configs for API groups [kubelet.config.k8
s.io kubeproxy.config.k8s.io][init] Using Kubernetes version: v1.18.2
[preflight] Running pre-flight checks
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please
follow the guide at https://kubernetes.io/docs/setup/cri/[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Starting the kubelet
[certs] Using certificateDir folder "/etc/kubernetes/pki"
[certs] Generating "ca" certificate and key
[certs] Generating "apiserver" certificate and key
[certs] apiserver serving cert is signed for DNS names [c-3-104 kubernetes kubernetes.default kubernetes.default.svc kubernetes.defa
ult.svc.cluster.local] and IPs [10.10.0.1 192.168.3.104][certs] Generating "apiserver-kubelet-client" certificate and key
[certs] Generating "front-proxy-ca" certificate and key
[certs] Generating "front-proxy-client" certificate and key
[certs] Generating "etcd/ca" certificate and key
[certs] Generating "etcd/server" certificate and key
[certs] etcd/server serving cert is signed for DNS names [c-3-104 localhost] and IPs [192.168.3.104 127.0.0.1 ::1]
[certs] Generating "etcd/peer" certificate and key
[certs] etcd/peer serving cert is signed for DNS names [c-3-104 localhost] and IPs [192.168.3.104 127.0.0.1 ::1]
[certs] Generating "etcd/healthcheck-client" certificate and key
[certs] Generating "apiserver-etcd-client" certificate and key
[certs] Generating "sa" key and public key
[kubeconfig] Using kubeconfig folder "/etc/kubernetes"
[kubeconfig] Writing "admin.conf" kubeconfig file
[kubeconfig] Writing "kubelet.conf" kubeconfig file
[kubeconfig] Writing "controller-manager.conf" kubeconfig file
[kubeconfig] Writing "scheduler.conf" kubeconfig file
[control-plane] Using manifest folder "/etc/kubernetes/manifests"
[control-plane] Creating static Pod manifest for "kube-apiserver"
[control-plane] Creating static Pod manifest for "kube-controller-manager"
W0527 13:15:55.300229 13148 manifests.go:225] the default kube-apiserver authorization-mode is "Node,RBAC"; using "Node,RBAC"
[control-plane] Creating static Pod manifest for "kube-scheduler"
W0527 13:15:55.302269 13148 manifests.go:225] the default kube-apiserver authorization-mode is "Node,RBAC"; using "Node,RBAC"
[etcd] Creating static Pod manifest for local etcd in "/etc/kubernetes/manifests"
[wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory "/etc/kubernetes/manifests".
This can take up to 4m0s[apiclient] All control plane components are healthy after 34.003709 seconds
[upload-config] Storing the configuration used in ConfigMap "kubeadm-config" in the "kube-system" Namespace
[kubelet] Creating a ConfigMap "kubelet-config-1.18" in namespace kube-system with the configuration for the kubelets in the cluster
[upload-certs] Skipping phase. Please see --upload-certs
[mark-control-plane] Marking the node c-3-104 as control-plane by adding the label "node-role.kubernetes.io/master=''"
[mark-control-plane] Marking the node c-3-104 as control-plane by adding the taints [node-role.kubernetes.io/master:NoSchedule]
[bootstrap-token] Using token: 78va9y.lbfgkkpjl9cwe5cs
[bootstrap-token] Configuring bootstrap tokens, cluster-info ConfigMap, RBAC Roles
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to get nodes
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate
credentials[bootstrap-token] configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token
[bootstrap-token] configured RBAC rules to allow certificate rotation for all node client certificates in the cluster
[bootstrap-token] Creating the "cluster-info" ConfigMap in the "kube-public" namespace
[kubelet-finalize] Updating "/etc/kubernetes/kubelet.conf" to point to a rotatable kubelet client certificate and key
[addons] Applied essential addon: CoreDNS
[addons] Applied essential addon: kube-proxy
Your Kubernetes control-plane has initialized successfully!
To start using your cluster, you need to run the following as a regular user:
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/
Then you can join any number of worker nodes by running the following on each as root:
kubeadm join 192.168.3.104:6443 --token 78va9y.lbfgkkpjl9cwe5cs \
--discovery-token-ca-cert-hash sha256:d2de3ae7c47a18ceca31deebcf1b0e5441cc6a7963e272dd381a8f600ef63820
[root@c-3-104 ~]#
kubectl配置
[root@c-3-104 ~]# mkdir -p $HOME/.kube
[root@c-3-104 ~]#cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
[root@c-3-104 ~]# chown $(id -u):$(id -g) $HOME/.kube/config
[root@c-3-104 ~]# source <(kubectl completion bash)
[root@c-3-104 ~]# cat .bashrc //add source
# .bashrc
# User specific aliases and functions
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
source <(kubectl completion bash)
CNI-calico网络
[root@c-3-104 ~]# kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
pod状态
[root@c-3-104 ~]# kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-789f6df884-vw89h 1/1 Running 0 6m31s
kube-system calico-node-45wcn 1/1 Running 0 6m31s
kube-system calico-node-8sxzh 1/1 Running 0 6m31s
kube-system coredns-7ff77c879f-hppfr 1/1 Running 0 13m
kube-system coredns-7ff77c879f-zztzk 1/1 Running 0 13m
kube-system etcd-c-3-104 1/1 Running 0 13m
kube-system kube-apiserver-c-3-104 1/1 Running 0 13m
kube-system kube-controller-manager-c-3-104 1/1 Running 2 13m
kube-system kube-proxy-66wv4 1/1 Running 0 13m
kube-system kube-proxy-pqzsq 1/1 Running 0 11m
kube-system kube-scheduler-c-3-104 1/1 Running 2 13m
[root@c-3-104 ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
c-3-104 Ready master 13m v1.18.3
c-3-105 Ready <none> 11m v1.18.3
[root@c-3-104 ~]#
kubernetes-dashboard
link
[root@c-3-104 ~]# wget -k https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.1/aio/deploy/recommended.yaml
--2020-05-27 13:33:21-- https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.1/aio/deploy/recommended.yaml
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.108.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.108.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 7552 (7.4K) [text/plain]
Saving to: ‘recommended.yaml’
100%[==========================================================================================>] 7,552 --.-K/s in 0s
2020-05-27 13:33:22 (15.4 MB/s) - ‘recommended.yaml’ saved [7552/7552]
Converted 0 files in 0 seconds.
设置nodeport/token-ttl
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[root@c-3-104 ~]# cat recommended.yaml
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
type: NodePort //add
ports:
- port: 443
targetPort: 8443
nodePort: 30000 //add
selector:
k8s-app: kubernetes-dashboard
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
spec:
containers:
- name: kubernetes-dashboard
image: kubernetesui/dashboard:v2.0.1
imagePullPolicy: Always
ports:
- containerPort: 8443
protocol: TCP
args:
- --auto-generate-certificates
- --namespace=kubernetes-dashboard
- --token-ttl=43200 //add
# Uncomment the following line to manually specify Kubernetes API server Host
# If not specified, Dashboard will attempt to auto discover the API server and connect
# to it. Uncomment only if the default does not work.
# - --apiserver-host=http://my-address:port
volumeMounts:
- name: kubernetes-dashboard-certs
mountPath: /certs
# Create on-disk volume to store exec logs
- mountPath: /tmp
name: tmp-volume
livenessProbe:
httpGet:
scheme: HTTPS
path: /
port: 8443
initialDelaySeconds: 30
timeoutSeconds: 30
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
volumes:
- name: kubernetes-dashboard-certs
secret:
secretName: kubernetes-dashboard-certs
- name: tmp-volume
emptyDir: {}
serviceAccountName: kubernetes-dashboard
nodeSelector:
"kubernetes.io/os": linux
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
[root@c-3-104 ~]# kubectl create -f recommended.yaml
[root@c-3-104 ~]# kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-789f6df884-vw89h 1/1 Running 0 25m
kube-system calico-node-45wcn 1/1 Running 0 25m
kube-system calico-node-8sxzh 1/1 Running 0 25m
kube-system coredns-7ff77c879f-hppfr 1/1 Running 0 31m
kube-system coredns-7ff77c879f-zztzk 1/1 Running 0 31m
kube-system etcd-c-3-104 1/1 Running 0 32m
kube-system kube-apiserver-c-3-104 1/1 Running 0 32m
kube-system kube-controller-manager-c-3-104 1/1 Running 2 32m
kube-system kube-proxy-66wv4 1/1 Running 0 31m
kube-system kube-proxy-pqzsq 1/1 Running 0 29m
kube-system kube-scheduler-c-3-104 1/1 Running 2 32m
kubernetes-dashboard dashboard-metrics-scraper-6b4884c9d5-dk4xh 1/1 Running 0 11m
kubernetes-dashboard kubernetes-dashboard-86467659d-sqpcs 1/1 Running 0 11m
[root@c-3-104 ~]# kubectl get svc -A
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default kubernetes ClusterIP 10.10.0.1 <none> 443/TCP 32m
kube-system kube-dns ClusterIP 10.10.0.10 <none> 53/UDP,53/TCP,9153/TCP 32m
kubernetes-dashboard dashboard-metrics-scraper ClusterIP 10.10.12.70 <none> 8000/TCP 12m
kubernetes-dashboard kubernetes-dashboard NodePort 10.10.116.89 <none> 443:30000/TCP 12m
[root@c-3-104 ~]#
add rbac
kubectl create clusterrolebinding serviceaccount-cluster-admin \
--clusterrole=cluster-admin \
--user=system:serviceaccount:kubernetes-dashboard:kubernetes-dashboard
dashboard-token
[root@c-3-104 ~]# kubectl get secret --namespace=kubernetes-dashboard
NAME TYPE DATA AGE
default-token-k2f2q kubernetes.io/service-account-token 3 2m55s
kubernetes-dashboard-certs Opaque 0 2m55s
kubernetes-dashboard-csrf Opaque 1 2m55s
kubernetes-dashboard-key-holder Opaque 2 2m55s
kubernetes-dashboard-token-fj8ww kubernetes.io/service-account-token 3 2m55s
[root@c-3-104 ~]#
[root@c-3-104 ~]# kubectl describe secrets -n kubernetes-dashboard kubernetes-dashboard-token-fj8ww | grep token | awk 'NR==3{print
$2}'eyJhbGciOiJSUzI1NiIsImtpZCI6IjVxRHpTMXRoS3dOWUZMRElBVC1YZ1NpZ1daVDI3dENtWUlpQTRUN2U1QTQifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2Nvd
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.ai-vpMtUqRqrMQsUqnQ0HzIWMBV8KQ2kMNE75jlENvUMWMsM1d0V-ANISzkF_YIrZrUlG5Z6a27dLJFr01Sybiy5pqkGPrhiDbClBMO69lN25r5EQ1VBUDEJUpLKI-rGkXi2GnnPC_e8o57O-1yL9YB-ToXdLFdRFBNnbpNKFcMdz5ooBsgQTgXMC_zEbS6aYyAMBlV-1yoLmEuFUL8qHt01Yt-wI9blnikYF-7HksjEVjVhWeQfPDOv0VGVlwDjXOHNKIUQPU13mTFNrXOv52KiiPxrKhBaJJbbPpmsUrdi3bCbKL-QWuv6ch5rMTcX75z6auhk4PG0bqbnmxEm2g
chrome
https://192.168.3.104:30000/
node
root@c-3-105 ~]# systemctl enable kubelet
Created symlink from /etc/systemd/system/multi-user.target.wants/kubelet.service to /usr/lib/systemd/system/kubelet.service.
[root@c-3-105 ~]#
[root@c-3-105 ~]# kubeadm join 192.168.3.104:6443 --token 78va9y.lbfgkkpjl9cwe5cs \
> --discovery-token-ca-cert-hash sha256:d2de3ae7c47a18ceca31deebcf1b0e5441cc6a7963e272dd381a8f600ef63820
W0527 13:18:21.305837 10959 join.go:346] [preflight] WARNING: JoinControlPane.controlPlane settings will be ignored when control-p
lane flag is not set.[preflight] Running pre-flight checks
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please
follow the guide at https://kubernetes.io/docs/setup/cri/[preflight] Reading configuration from the cluster...
[preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'
[kubelet-start] Downloading configuration for the kubelet from the "kubelet-config-1.18" ConfigMap in the kube-system namespace
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Starting the kubelet
[kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap...
This node has joined the cluster:
* Certificate signing request was sent to apiserver and a response was received.
* The Kubelet was informed of the new secure connection details.
Run 'kubectl get nodes' on the control-plane to see this node join the cluster.
ERROR
CNI缺失
[root@c-3-104 ~]# journalctl -u kubelet -f //master
-- Logs begin at Wed 2020-05-27 11:29:03 CST. --
May 27 13:22:46 c-3-104 kubelet[14091]: E0527 13:22:46.217591 14091 kubelet.go:2187] Container runtime network not ready: NetworkR
eady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitializedMay 27 13:22:49 c-3-104 kubelet[14091]: W0527 13:22:49.351884 14091 cni.go:237] Unable to update cni config: no networks found in
/etc/cni/net.dMay 27 13:22:51 c-3-104 kubelet[14091]: E0527 13:22:51.219407 14091 kubelet.go:2187] Container runtime network not ready: NetworkR
eady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitializedMay 27 13:22:54 c-3-104 kubelet[14091]: W0527 13:22:54.352129 14091 cni.go:237] Unable to update cni config: no networks found in
/etc/cni/net.dMay 27 13:22:56 c-3-104 kubelet[14091]: E0527 13:22:56.222623 14091 kubelet.go:2187] Container runtime network not ready: NetworkR
eady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitializedMay 27 13:22:59 c-3-104 kubelet[14091]: W0527 13:22:59.352454 14091 cni.go:237] Unable to update cni config: no networks found in
/etc/cni/net.dMay 27 13:23:01 c-3-104 kubelet[14091]: E0527 13:23:01.224719 14091 kubelet.go:2187] Container runtime network not ready: NetworkR
eady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitializedMay 27 13:23:04 c-3-104 kubelet[14091]: W0527 13:23:04.353681 14091 cni.go:237] Unable to update cni config: no networks found in
/etc/cni/net.dMay 27 13:23:06 c-3-104 kubelet[14091]: E0527 13:23:06.229160 14091 kubelet.go:2187] Container runtime network not ready: NetworkR
eady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitializedMay 27 13:23:09 c-3-104 kubelet[14091]: W0527 13:23:09.355189 14091 cni.go:237] Unable to update cni config: no networks found in
/etc/cni/net.d
解决方式部署CNI
flannel
calico
weave
...
[root@master01 ~]# kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
异常日志查看
[root@c-3-104 ~]# kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-789f6df884-vw89h 1/1 Running 0 33m
kube-system calico-node-45wcn 1/1 Running 0 33m
kube-system calico-node-8sxzh 1/1 Running 0 33m
kube-system coredns-7ff77c879f-hppfr 1/1 Running 0 40m
kube-system coredns-7ff77c879f-zztzk 1/1 Running 0 40m
kube-system etcd-c-3-104 1/1 Running 0 40m
kube-system kube-apiserver-c-3-104 1/1 Running 0 40m
kube-system kube-controller-manager-c-3-104 1/1 Running 2 40m
kube-system kube-proxy-66wv4 1/1 Running 0 40m
kube-system kube-proxy-pqzsq 1/1 Running 0 38m
kube-system kube-scheduler-c-3-104 1/1 Running 2 40m
kubernetes-dashboard dashboard-metrics-scraper-6b4884c9d5-dk4xh 1/1 Running 0 20m
kubernetes-dashboard kubernetes-dashboard-86467659d-sqpcs 1/1 Running 0 20m
[root@c-3-104 ~]#
[root@c-3-104 ~]#
[root@c-3-104 ~]# kubectl logs -f -n kubernetes-dashboard kubernetes-dashboard-86467659d-sqpcs
[root@c-3-104 ~]# journalctl -u kubelet -f