基本队对象
pod 最小单位
service 跟网络相关
Volume
Namespace
准备工作:
master
node1 node2
修改主机名:
做本地解析
10.0.0.51 master
10.0.0.56 node-1
10.0.0.186 node-2
关闭swap分区: swapoff -a 临时关闭
sed -i 's/.*swap.*/#&/' /etc/fstab 永久关闭
开启docker:systemctl start docker (三个节点全做:scp )
systemctl enable docker
vim /etc/docker/daemon.json
{
"exec-opts": ["native.cgroupdriver=systemd"]
}
systemctl restart docker
编写脚本: vim kubernetes.sh (三个节点全做:scp)
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
eof
yum -y install kubeadm-1.23.5 kubelet-1.23.5 kubectl-1.23.5 ipvsadm
cat >/etc/sysconfig/kubelet<<EOF
KUBELET_EXTRA_ARGS="--cgroup-driver=cgroupfs --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause-amd64:3.1"
EOF
modprobe br_netfilter
cat >> /etc/sysctl.conf <<eof
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
vm.swappiness=0
eof
sysctl -p
上传1.23.5目录中的所有压缩包
cd 1.23.5
[root@master ~]# cat image_load.sh (三个节点全做: scp image_load.sh node-1:/root/1.23.5/)
#!/bin/bash
image_path=`pwd`
for i in `ls "${image_path}" | grep tar`
do
docker load < $i
done
master节点初始化:
kubeadm init --kubernetes-version=1.23.5 --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=10.0.0.220(主节点的IP)
改错:重新初始化:先重置,再初始化
cd
按照提示:
mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config
export KUBECONFIG=/etc/kubernetes/admin.conf
上传: kube-flannel(1).yml
kubectl apply -f kube-flannel\(1\).yml
在master节点按提示复制到nod-1/node-2: kubeadm join 10.0.0.51:6443 --token w6iurw.k5xu7n0hze7cagni --discovery-token-ca-cert-hash sha256:bc859e0f8194de2f01831d165f5bf7280e083bd0b5000285bc2372d405e24a9d
改错:vim /etc/sysconfig/kubelet
KUBELET_EXTRA_ARGS="--cgroup-driver=systemd --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause-amd64:3.1"
安装kuboard(主节点):
kubectl apply -f https://addons.kuboard.cn/kuboard/kuboard-v3.yaml 如果不行就换镜像参考官网
kubectl label nodes node-1 k8s.kuboard.cn/role=etcd
kubectl label nodes node-2 k8s.kuboard.cn/role=etcd
kubectl get pods -n kuboard
显示running
验证:
ip地址+30080