Centos7安装Kubernetes 1.28.2

最新推荐文章于 2025-03-31 09:18:20 发布

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最新推荐文章于 2025-03-31 09:18:20 发布

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分类专栏： Kubernetes 文章标签： kubernetes 容器云原生

本文链接：https://blog.youkuaiyun.com/weixin_39555954/article/details/144255104

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一、准备工作

二、安装容器运行时（Docker Engine方式，每个节点都要执行）

四、安装kubelet 、kubeadm、 kubectl（每个节点都执行）

1、配置阿里仓库

2、安装kubelet、kubeadm、kubectl

3、节点初始化（仅在master节点执行）

一、准备工作

参考 Centos7安装Kubernetes 1.27.2_crictl 安装-优快云博客

二、安装容器运行时（Docker Engine方式，每个节点都要执行）

1、删除docker，如果存在的话

#安装dnf命令

sudo yum install dnf -y

#删除docker

sudo dnf remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

2、设置阿里仓库

sudo dnf -y install dnf-plugins-core


sudo dnf config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

3、安装Docker

#查看版本
dnf list docker-ce --showduplicates | sort -r

#安装
sudo dnf install docker-ce-25.0.0-1.el7 docker-ce-cli-25.0.0-1.el7 containerd.io docker-buildx-plugin docker-compose-plugin

#启动
sudo systemctl enable --now docker


#创建加速文件

sudo mkdir -p /etc/docker
#配置
sudo tee /etc/docker/daemon.json <<-'EOF'
{
   "exec-opts": ["native.cgroupdriver=systemd"],
   "registry-mirrors": [
        "https://docker.unsee.tech",
        "https://dockerpull.org",
        "https://dockerhub.icu"
    ],
 "insecure-registries": ["http://192.168.139.184:8899"]
}
EOF

#重启docker
systemctl restart docker

4、卸载

sudo dnf remove docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extras

sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd

三、安装cri-dockerd

#安装wget

um install wget -y 

wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.14/cri-dockerd-0.3.14-3.el7.x86_64.rpm

安装
rpm -i cri-dockerd-0.3.14-3.el7.x86_64.rpm 

#查看服务状态
systemctl status cri-docker


systemctl daemon-reload
systemctl enable cri-docker.service
systemctl enable --now cri-docker.socket
systemctl start cri-docker



#指定沙箱镜像
 vi /usr/lib/systemd/system/cri-docker.service 
 

ExecStart=/usr/local/bin/cri-dockerd --container-runtime-endpoint fd:// --network-plugin=cni --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.9

四、安装kubelet 、kubeadm、 kubectl（每个节点都执行）

1、配置阿里仓库

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

2、安装kubelet、kubeadm、kubectl

查看yum源中 软件版本列表
yum --showduplicates list kubelet

yum install --setopt=obsoletes=0 kubelet-1.28.2-0 kubeadm-1.28.2-0 kubectl-1.28.2-0 -y
 
systemctl enable kubelet && systemctl start kubelet

3、节点初始化（仅在master节点执行）

kubeadm init \
  --apiserver-advertise-address=192.168.139.176 \
  --image-repository registry.aliyuncs.com/google_containers \
  --kubernetes-version v1.28.2 \
  --service-cidr=10.96.0.0/12 \
  --pod-network-cidr=10.244.0.0/16 \
  --ignore-preflight-errors=all \
  --cri-socket unix:///var/run/cri-dockerd.sock



这里指定 criSocket

4、重置

kubeadm reset  --cri-socket unix:///var/run/cri-dockerd.sock
 
rm -fr ~/.kube/  /etc/kubernetes/* var/lib/etcd/*

5、加入集群

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



#从节点

kubeadm join 192.168.139.176:6443 --token lq4lsg.817rpifs0y3kkszh \
       --cri-socket unix:///var/run/cri-dockerd.sock\
       --discovery-token-ca-cert-hash sha256:74ee45c7ec1218b31b86d1d6e89f2ef2bb5491e338459e446ee9a476081b2aec

五、配置网络查件

kube-flannel.yml

---
kind: Namespace
apiVersion: v1
metadata:
  name: kube-flannel
  labels:
    k8s-app: flannel
    pod-security.kubernetes.io/enforce: privileged
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  labels:
    k8s-app: flannel
  name: flannel
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - get
- apiGroups:
  - ""
  resources:
  - nodes
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  resources:
  - nodes/status
  verbs:
  - patch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  labels:
    k8s-app: flannel
  name: flannel
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: flannel
subjects:
- kind: ServiceAccount
  name: flannel
  namespace: kube-flannel
---
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: flannel
  name: flannel
  namespace: kube-flannel
---
kind: ConfigMap
apiVersion: v1
metadata:
  name: kube-flannel-cfg
  namespace: kube-flannel
  labels:
    tier: node
    k8s-app: flannel
    app: flannel
data:
  cni-conf.json: |
    {
      "name": "cbr0",
      "cniVersion": "0.3.1",
      "plugins": [
        {
          "type": "flannel",
          "delegate": {
            "hairpinMode": true,
            "isDefaultGateway": true
          }
        },
        {
          "type": "portmap",
          "capabilities": {
            "portMappings": true
          }
        }
      ]
    }
  net-conf.json: |
    {
      "Network": "10.244.0.0/16",
      "EnableNFTables": false,
      "Backend": {
        "Type": "vxlan"
      }
    }
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds
  namespace: kube-flannel
  labels:
    tier: node
    app: flannel
    k8s-app: flannel
spec:
  selector:
    matchLabels:
      app: flannel
  template:
    metadata:
      labels:
        tier: node
        app: flannel
    spec:
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: kubernetes.io/os
                operator: In
                values:
                - linux
      hostNetwork: true
      priorityClassName: system-node-critical
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni-plugin
        image: docker.io/flannel/flannel-cni-plugin:v1.6.0-flannel1
        command:
        - cp
        args:
        - -f
        - /flannel
        - /opt/cni/bin/flannel
        volumeMounts:
        - name: cni-plugin
          mountPath: /opt/cni/bin
      - name: install-cni
        image: docker.io/flannel/flannel:v0.26.1
        command:
        - cp
        args:
        - -f
        - /etc/kube-flannel/cni-conf.json
        - /etc/cni/net.d/10-flannel.conflist
        volumeMounts:
        - name: cni
          mountPath: /etc/cni/net.d
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      containers:
      - name: kube-flannel
        image: docker.io/flannel/flannel:v0.26.1
        command:
        - /opt/bin/flanneld
        args:
        - --ip-masq
        - --kube-subnet-mgr
        resources:
          requests:
            cpu: "100m"
            memory: "50Mi"
        securityContext:
          privileged: false
          capabilities:
            add: ["NET_ADMIN", "NET_RAW"]
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        - name: EVENT_QUEUE_DEPTH
          value: "5000"
        volumeMounts:
        - name: run
          mountPath: /run/flannel
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
        - name: xtables-lock
          mountPath: /run/xtables.lock
      volumes:
      - name: run
        hostPath:
          path: /run/flannel
      - name: cni-plugin
        hostPath:
          path: /opt/cni/bin
      - name: cni
        hostPath:
          path: /etc/cni/net.d
      - name: flannel-cfg
        configMap:
          name: kube-flannel-cfg
      - name: xtables-lock
        hostPath:
          path: /run/xtables.lock
          type: FileOrCreate