K8S集群部署

霍格沃兹答疑区
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1

官方文档

容器安装

sudo yum remove docker \
  docker-client \
  docker-client-latest \
  docker-common \
  docker-latest \
  docker-latest-logrotate \
  docker-logrotate \
  docker-engine
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo

sudo yum install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin
systemctl enable containerd && systemctl start containerd

开启CRI

sed -i '/disabled_plugins/s#"cri"##' /etc/containerd/config.toml

安装CNI

yum install -y kubernetes-cni

安装K8S

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
setenforce 0
# yum install -y kubelet kubeadm kubectl
yum install -y --nogpgcheck kubelet kubeadm kubectl
systemctl enable kubelet && systemctl start kubelet

初始化集群

# 检查版本
kubelet --version | grep -o '[0-9.]*'
#清理环境
kubeadm reset -f;
#开始安装
kubeadm init \
  --apiserver-advertise-address=10.1.1.69 \
  --kubernetes-version 1.25.3 \
  --pod-network-cidr=10.244.0.0/16 \
  --image-repository registry.aliyuncs.com/google_containers \
  -v5

环境配置

vim ~/.bash_profile

KUBECONFIGexport KUBECONFIG=/etc/kubernetes/admin.conf
alias k=kubectl

节点部署

sudo yum remove docker \
  docker-client \
  docker-client-latest \
  docker-common \
  docker-latest \
  docker-latest-logrotate \
  docker-logrotate \
  docker-engine
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo

sudo yum install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

sed -i '/disabled_plugins/s#"cri"##' /etc/containerd/config.toml
systemctl enable containerd && systemctl restart containerd

ctr -n k8s.io image pull registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.6
ctr -n k8s.io image tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.6 k8s.gcr.io/pause:3.6
ctr -n k8s.io image tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.6 registry.k8s.io/pause:3.6

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
setenforce 0
# yum install -y kubelet kubeadm kubectl
yum install -y --nogpgcheck kubelet kubeadm kubectl
systemctl enable kubelet && systemctl start kubelet

排查方法

journalctl -exf -u kubelet
ctr -n k8s.io c ls

工作负载

Jenkins与K8S整合

https://plugins.jenkins.io/kubernetes/

常见问题