How to configure kubeadm-install-kubernetes

This article mainly introduces the relevant knowledge of how to configure kubeadm-install-kubernetes, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this article on how to configure kubeadm-install-kubernetes. Let's take a look at it.

-yum repo

Baseurl= http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/

Baseurl= http://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/

Baseurl= http://mirrors.aliyun.com/epel/7/x86_64

Baseurl= http://mirrors.aliyun.com/centos/7/extras/x86_64/

# 1. Configure system-related parameters

Cat / etc/yum.repos.d/10.245.254.93_linux_soft_epel_7.repo

# 3. Install kubeadm & docker

# yum-y install docker-ce kubeadm kubelet kubectl

Yum-y install docker-ce-18.06.3.ce-3.el7 kubeadm-1.14.3 kubelet-1.14.3 kubectl-1.14.3

Systemctl enable docker kubelet

Sed-I "17a\ ExecStartPost=/usr/sbin/iptables-P FORWARD ACCEPT" / usr/lib/systemd/system/docker.service

# https://kubernetes.io/docs/setup/cri

Mkdir / etc/docker / etc/systemd/system/docker.service.d

Cat > / etc/hosts

Echo '10.247.15.75 node01' > > / etc/hosts

Echo '10.247.15.89 node02' > > / etc/hosts

Echo '10.247.15.92 node03' > > / etc/hosts

# 5.-for Master site install

Kubeadm init\

-- kubernetes-version=v1.14.3\

-- apiserver-advertise-address=10.247.15.75\

-- pod-network-cidr=10.244.0.0/16\

-- service-cidr=192.168.0.0/16\

-- image-repository=ispcdocker.com/k8s

# https://github.com/coreos/flannel

# https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

Curl http://10.245.254.93/linux/soft/docker/kubernetes/kube-flannel-v0.11.0.yml > / tmp/flannel.yaml

Sed-I '212 sed / tmp/flannel.yaml

Sed-I "s#quay.io/coreos#ispcdocker.com/k8s#g" / tmp/flannel.yaml

Kubectl-- kubeconfig=/etc/kubernetes/admin.conf apply-f / tmp/flannel.yaml

Mkdir-p $HOME/.kube

Cp-I / etc/kubernetes/admin.conf $HOME/.kube/config

Chown $(id-u): $(id-g) $HOME/.kube/config

Kubectl get nodes

Kubectl get cs

Kubectl get pods-- all-namespaces-o wide # to see which machine dashboard is assigned to by K8s

Kubectl get services-- all-namespaces # View the IP within the cluster of dashboard

Kubectl get services-n kube-system

Kubectl-n kube-system get all

Kubectl-n kube-system top pods

# 6.-for Minion site

# kubeadm token create-- print-join-command | sed's VIP ${LOCAL_IP} / ${VIP} / g'

Kubeadm join 10.247.15.75 6443-- token 662w0d.roh3btd0g6cbxc5y\

-- discovery-token-ca-cert-hash sha256:b700f04ead542060189e02581f5463d50b4f003c78a8c118d6e6a14884e09d83

# 7.-for Dashboard

# https://github.com/kubernetes/dashboard

# https://github.com/kubernetes-retired/heapster/tree/master/deploy/kube-config/influxdb

# https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/

# https://docs.giantswarm.io/guides/install-kubernetes-dashboard/

# https://stackoverflow.com/questions/46664104/how-to-sign-in-kubernetes-dashboard

# https://github.com/kubernetes/dashboard/wiki/Accessing-Dashboard---1.7.X-and-above

# https://github.com/kubernetes/dashboard/wiki/Certificate-management

# https://sunwfrk.com/k8s-dashboard-installation/

# https://docs.aws.amazon.com/eks/latest/userguide/dashboard-tutorial.html

# https://github.com/kubernetes-retired/heapster

# https://github.com/kubernetes-incubator/metrics-server

# docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.3

# 7.1 install metrics-server

# https://blog.codewithdan.com/enabling-metrics-server-for-kubernetes-on-docker-desktop/

# https://blog.csdn.net/oyym_mv/article/details/87166639

Https://blog.csdn.net/zyl290760647/article/details/83041991

Wget http://10.245.254.93/linux/soft/docker/kubernetes/metrics/metrics-server-0.3.3.tar.gz

Tar zxpf metrics-server-0.3.3.tar.gz

Cd metrics-server-0.3.3

Sed-I'32 deploy/1.8+/metrics-server-deployment.yaml

Cat deploy/1.8+/metrics-server-deployment.yaml

Image: ispcdocker.com/dashboard/metrics-server-amd64:v0.3.3

ImagePullPolicy: IfNotPresent

Command:

-/ metrics-server

-metric-resolution=30s

-kubelet-insecure-tls

-kubelet-preferred-address-types=InternalIP,Hostname,InternalDNS,ExternalDNS,ExternalIP

VolumeMounts:

-name: tmp-dir

MountPath: / tmp

EOF

Kubectl create-f deploy/1.8+/

Cd

Kubectl-n kube-system get deployment metrics-server

Kubectl-n kube-system get pods

Kubectl-n kube-system top pods # This command need wait after 30 secend for system conllect performence dadta, else will give some error!

# 7.2 dashboard v1.10.1

Wget http://10.245.254.93/linux/soft/docker/kubernetes/heapster/v110/kubernetes-dashboard-1.10.1.yaml-O / root/kubernetes-dashboard.yaml

Sed-I "s | k8s.gcr.io | ispcdocker.com/dashboard | g" / root/kubernetes-dashboard.yaml

Sed-I "s | Opaque | NodePort | g" / root/kubernetes-dashboard.yaml

# Define Use fixed ports instead of dynamic ports

Sed-I "160a\\ nodePort: 30521" / root/kubernetes-dashboard.yaml

Sed-I "161a\\ type:\ NodePort" / root/kubernetes-dashboard.yaml

# 7.3-https://github.com/kubernetes/dashboard/wiki/Certificate-management

Openssl req-x509-nodes-newkey rsa:2048-sha256-days 999\

-keyout dashboard.key\

-out dashboard.crt\

-subj "/ C=CN/ST=docker/L=wuhan/O=ispc/OU=New site/CN=ispcdocker.com/emailAddress=macj@ispcdocker.com"

Mkdir / root/certs & & mv dashboard.* / root/certs

# 7.4-https://github.com/kubernetes/dashboard/wiki/Installation#recommended-setup

Kubectl create secret generic kubernetes-dashboard-certs-type=NodePort-from-file=$HOME/certs-n kube-system

Sed-I 1513 26d / root/kubernetes-dashboard.yaml

Kubectl create-f / root/kubernetes-dashboard.yaml

# 7.5. Change confg, and check dashboard web port

Kubectl-n kube-system get service kubernetes-dashboard

NAME TYPE CLUSTER-IP EXTERNAL-IP PORT (S) AGE

Kubernetes-dashboard NodePort 192.168.176.140 443:30521/TCP 32s

# 7.6 If you don't want to grant admin permission to dashboard service account, you can create cluster admin service account.

# https://stackoverflow.com/questions/46664104/how-to-sign-in-kubernetes-dashboard

# Create service account

Kubectl create serviceaccount dashboard-sa-u1

# Bind ClusterAdmin role to the service account

Kubectl create clusterrolebinding dashboard-sa-u1\

-- clusterrole=cluster-admin\

-- serviceaccount=default:dashboard-sa-u1

# And then, you can use the token of just created cluster admin service account.

Kubectl describe secret $(

Kubectl get secret | awk'/ ^ dashboard-sa-u1-token-/ {print $1}'

) | awk'$1percent = "token:" {print $2}'

# 7.7 web login

Https://10.247.15.75:30521/#!/login

This is the end of the article on "how to configure kubeadm-install-kubernetes". Thank you for reading! I believe that everyone has a certain understanding of the knowledge of "how to configure kubeadm-install-kubernetes". If you want to learn more knowledge, you are welcome to follow the industry information channel.