K8s集群v1.26.1版本的简单部署实践

#!/bin/bash
cat >> /etc/hosts << EOF
192.168.31.41  k8s-master 
192.168.31.121 k8s-node1
192.168.31.122 k8s-node2
EOF
hostnamectl set-hostname k8s-master
systemctl restart rsyslog
swapoff -a
sed -ri 's/.*swap.*/#&/' /etc/fstab
systemctl stop firewalld
systemctl disable firewalld
sed -i 's/enforcing/disabled/' /etc/selinux/config
setenforce 0

cat >> /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-iptables  = 1
net.ipv4.ip_forward                 = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF
sysctl --system

yum install ntpdate -y
ntpdate ntp.aliyun.com

yum install -y yum-utils device-mapper-persistent-data lvm2
# Step 2: 添加软件源信息
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# Step 3
sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo
# Step 4: 更新并安装Docker-CE
yum makecache fast
yum -y install docker-ce
# Step 4: 开启Docker服务

mkdir -p /data/docker
sed -i "s#ExecStart=/usr/bin/dockerd -H fd://#ExecStart=/usr/bin/dockerd --data-root /data/docker -H fd://#g" /lib/systemd/system/docker.service
cat /lib/systemd/system/docker.service | grep ExecStart
systemctl daemon-reload
mkdir -p /etc/docker/
touch /etc/docker/daemon.json
cat  > /etc/docker/daemon.json << \EOF
{
  "bip": "10.112.0.1/24",
  "registry-mirrors": ["https://XXXXX.mirror.aliyuncs.com"],
  "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

systemctl enable docker
systemctl restart docker
docker version

rpm -ivh cri-dockerd-0.3.1-3.el7.x86_64.rpm 
sed -i "s#ExecStart=/usr/bin/cri-dockerd --container-runtime-endpoint fd://#ExecStart=/usr/bin/cri-dockerd --container-runtime-endpoint fd://  --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.7#g" /usr/lib/systemd/system/cri-docker.service 
systemctl daemon-reload
systemctl enable cri-docker.service
systemctl restart cri-docker.service
systemctl restart docker


cat >> /etc/yum.repos.d/kubernetes.repo << \EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
exclude=kubelet kubeadm kubectl
EOF
yum install  -y kubelet-1.26.1 kubeadm-1.26.1 kubectl-1.26.1 --disableexcludes=kubernetes
systemctl enable kubelet

kubeadm init  --apiserver-advertise-address=192.168.31.41 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.26.1  --pod-network-cidr=10.244.0.0/16 --service-cidr=10.96.0.0/12 --cri-socket=unix:///var/run/cri-dockerd.sock --ignore-preflight-errors=all

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

kubeadm join 192.168.31.41:6443 --token 92zebh.ntfkdtf5l5aff5pf \
        --discovery-token-ca-cert-hash sha256:54f456308e46c78f65ccf6fbbd2b7b77b6bd79c9c465e169393d4035e868cfda --cri-socket=unix:///var/run/cri-dockerd.sock 

kubectl get nodes

tar -zxvf calico_dashboard.tar.gz
kubectl apply -f calico.yaml

tail -f /var/log/messages

kubectl get svc,pods -o wide -n kube-system

kubectl get nodes -o wide

kubectl apply -f kubernetes-dashboard2.7.yaml 
kubectl get svc,pods -o wide -n kubernetes-dashboard

kubectl create serviceaccount dashboard-admin -n kube-system
kubectl create clusterrolebinding dashboard-admin --clusterrole=cluster-admin --serviceaccount=kube-system:dashboard-admin
kubectl create token dashboard-admin -n kube-system

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