master安装
环境配置
- 禁用selinux sed -i '/^SELINUX=/s//SELINUX=disabled/' /etc/selinux/config
- 禁用swap swapoff -a && sed -i '/swap/d' /etc/fstab
- 禁用防火墙 yum -y remove firewalld
修改hosts文件 echo "192.168.2.51 master" >> /etc/hosts
不添加会有如下报错[root@master1 k8s]# kubeadm init --config=kubeadm.yml --dry-run [init] Using Kubernetes version: v1.28.0 [preflight] Running pre-flight checks [WARNING Hostname]: hostname "master" could not be reached [WARNING Hostname]: hostname "master": lookup master on 114.114.114.114:53: no such host [WARNING Service-Kubelet]: kubelet service is not enabled, please run 'systemctl enable kubelet.service'设置网桥
for i in overlay br_netfilter;do modprobe ${i} echo "${i}" >>/etc/modules-load.d/containerd.conf done cat >/etc/sysctl.d/99-kubernetes-cri.conf<<EOF net.ipv4.ip_forward = 1 net.bridge.bridge-nf-call-iptables = 1 net.bridge.bridge-nf-call-ip6tables = 1 EOF sysctl --system
安装软件包
安装kubeadm、kubectl、kubelet、containerd
yum install -y kubeadm kubelet kubectl containerd
#安装代理软件包
yum install -y ipvsadm ipset设置开机自启动
systemctl enable --now containerd
systemctl enable --now kubelet#配置快捷键
source <(kubeadm completion bash|tee /etc/bash_completion.d/kubeadm)
source <(kubectl completion bash|tee /etc/bash_completion.d/kubectl)修改containerd配置文件，安装crictl，详见文章 containerd安装与配置
下载镜像
#查看安装集群所需要的镜像信息
kubeadm config images list
I0326 20:53:28.890691 6257 version.go:256] remote version is much newer: v1.32.3; falling back to: stable-1.28
registry.k8s.io/kube-apiserver:v1.28.15
registry.k8s.io/kube-controller-manager:v1.28.15
registry.k8s.io/kube-scheduler:v1.28.15
registry.k8s.io/kube-proxy:v1.28.15
registry.k8s.io/pause:3.9
registry.k8s.io/etcd:3.5.15-0
registry.k8s.io/coredns/coredns:v1.10.1
#将镜像信息保存到临时文件中，方便下一步操作
kubeadm config images list > a.txt
# 下载所需要的镜像
for i in ` awk -F'/' '{print "registry.aliyuncs.com/google_containers/"$2}' a.txt`
do
crictl pull $i
doneImage is up to date for sha256:9dc6939e7c573673801790fcfad6f994282c216e005578f5836b5fafc6685fc2
Image is up to date for sha256:10541d8af03f40fae257735edd69b6c5dd0084bb9796649409ac7b5660705148
Image is up to date for sha256:9d3465f8477c6b383762d90ec387c9d77da8a402a849265805f86feaa57aeeea
Image is up to date for sha256:ba6d7f8bc25be40b51dfeb5ddfda697527ba55073620c1c5fa04a5f0ae9e3816
Image is up to date for sha256:e6f1816883972d4be47bd48879a08919b96afcd344132622e4d444987919323c
Image is up to date for sha256:2e96e5913fc06e3d26915af3d0f2ca5048cc4b6327e661e80da792cbf8d8d9d4
Image is up to date for sha256:1cf5f116067c67da67f97bff78c4bbc76913f59057c18627b96facaced73ea0b
[root@master1 ~]# crictl images ls
IMAGE TAG IMAGE ID SIZE
registry.aliyuncs.com/google_containers/coredns latest 1cf5f116067c6 20.9MB
registry.aliyuncs.com/google_containers/etcd 3.5.15-0 2e96e5913fc06 56.9MB
registry.aliyuncs.com/google_containers/kube-apiserver v1.28.15 9dc6939e7c573 34.4MB
registry.aliyuncs.com/google_containers/kube-controller-manager v1.28.15 10541d8af03f4 33.3MB
registry.aliyuncs.com/google_containers/kube-proxy v1.28.15 ba6d7f8bc25be 28.3MB
registry.aliyuncs.com/google_containers/kube-scheduler v1.28.15 9d3465f8477c6 18.5MB
registry.aliyuncs.com/google_containers/pause 3.9 e6f1816883972 322kB
初始化master集群
#生成配置模版
kubeadm config print init-defaults > init.yaml修改配置文件
- nodeRegistration下name字段改为master（name: master）
- imageRepository字段改为阿里云的地址（imageRepository: registry.aliyuncs.com/google_containers）
- localAPIEndpoint字段下advertiseAddress修改为master的IP地址（advertiseAddress: 192.168.2.51）
设置cgroupDriver为systemd
---
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
cgroupDriver: systemd使用--dry-run模拟安装过程，查看是否有报错
kubeadm init --config=init.yaml --dry-run #输出信息若干，没有 Error 和 Warning 就是正常正式部署master
rm -rf /etc/kubernetes/tmp kubeadm init --config=init.yaml |tee init/init.log #根据安装提示执行命令 mkdir -p $HOME/.kube cp -i /etc/kubernetes/admin.conf $HOME/.kube/config chown $(id -u):$(id -g) $HOME/.kube/config
安装calico网络插件
kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml查看集群状态
#使用下面两条命令中的任意一条即可
kubectl -n kube-system get pods
kubectl get pods -A
NAME READY STATUS RESTARTS AGE
calico-kube-controllers-658d97c59c-vkk2n 0/1 Pending 0 144m
calico-node-2gjfd 0/1 Init:ImagePullBackOff 0 144m
coredns-66f779496c-562gq 0/1 Pending 0 152m
coredns-66f779496c-v4msh 0/1 Pending 0 152m
etcd-master 1/1 Running 0 152m
kube-apiserver-master 1/1 Running 0 152m
kube-controller-manager-master 1/1 Running 0 152m
kube-proxy-kwp62 1/1 Running 0 152m
kube-scheduler-master 1/1 Running 0 152m等待几分钟后，calcio插件会变成Running状态
kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-658d97c59c-9z9km 1/1 Running 0 9m5s
kube-system calico-node-7ftlf 1/1 Running 0 9m6s
kube-system coredns-66f779496c-n7h9t 1/1 Running 0 20m
kube-system coredns-66f779496c-x7tvt 1/1 Running 0 20m
kube-system etcd-master 1/1 Running 0 20m
kube-system kube-apiserver-master 1/1 Running 0 20m
kube-system kube-controller-manager-master 1/1 Running 0 20m
kube-system kube-proxy-tdp72 1/1 Running 0 20m
kube-system kube-scheduler-master 1/1 Running 0 20m
评论 (0)