DD系统

curl -fLO https://raw.githubusercontent.com/bohanyang/debi/master/debi.sh && chmod a+rx debi.sh &&  ./debi.sh --cdn --network-console --ethx --bbr --user root --password Iloveyou1314. --timezone Asia/Shanghai --dns '8.8.8.8 8.8.4.4' && shutdown -r now

修改系统设置

关闭swap

首先使用命令

swapoff -a

关闭所有的swap分区

然后修改/etc/fstab文件

将其中的swap分区挂载注释掉。

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# systemd generates mount units based on this file, see systemd.mount(5).
# Please run 'systemctl daemon-reload' after making changes here.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda2 during installation
UUID=a11f740e-cddf-4d5d-86a1-d6b07b56b747 /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda1 during installation
UUID=C280-7076  /boot/efi       vfat    umask=0077      0       1
# swap was on /dev/sda3 during installation
#UUID=e3cda1be-1c9e-4346-a20a-389e80c6c027 none            swap    sw              0       0

然而这还不够，debian系统还会自动扫描磁盘上的swap分区实现挂载，这里可以直接使用fdisk工具删除掉swap分区即可。

修改网络设置

cat <<EOF |  tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF

modprobe overlay
modprobe br_netfilter

# 设置所需的 sysctl 参数，参数在重新启动后保持不变
cat <<EOF |  tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables  = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward                 = 1
EOF

# 应用 sysctl 参数而不重新启动
sysctl --system

一把梭，直接执行即可。

添加虚拟网卡

修改/etc/network/interfaces

添加以下

auto eth0:1
iface eth0:1 inet static
address 公网ip
netmask 255.255.255.0

重启网络 /etc/init.d/networking restart

auto eth0:1
iface eth0:1 inet static
address 150.230.211.90
netmask 255.255.255.0

安装docker

安装docker engine

apt-get update
apt-get install -y \
    ca-certificates \
    curl \
    gnupg \
    lsb-release 
mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/debian/gpg |  gpg --dearmor -o /etc/apt/keyrings/docker.gpg    
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \
  $(lsb_release -cs) stable" |  tee /etc/apt/sources.list.d/docker.list > /dev/null
apt-get update
apt-get install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

安装cri

k8s最新版已经不支持docker作为运行时，之前使用debian维护的docker.io，虽然安装的时候没有报错，但是使用的时候报了很多错误。踩了坑，浪费了很多时间。

官方的项目地址为：https://github.com/Mirantis/cri-dockerd

首先需要安装go，直接去go的官网下载安装就行。

 wget https://go.dev/dl/go1.19.1.linux-amd64.tar.gz
 rm -rf /usr/local/go && tar -C /usr/local -xzf go1.19.1.linux-amd64.tar.gz
 export PATH=$PATH:/usr/local/go/bin
 go version

成功安装会出现提示：

当然我这里写的是amd64的架构，如果是arm架构的服务器则需要下载arm版本的go。

然后就是安装cri

git clone https://github.com/Mirantis/cri-dockerd.git
cd cri-dockerd
mkdir bin
go build -o bin/cri-dockerd
mkdir -p /usr/local/bin
install -o root -g root -m 0755 bin/cri-dockerd /usr/local/bin/cri-dockerd
cp -a packaging/systemd/* /etc/systemd/system
sed -i -e 's,/usr/bin/cri-dockerd,/usr/local/bin/cri-dockerd,' /etc/systemd/system/cri-docker.service
systemctl daemon-reload
systemctl enable cri-docker.service
systemctl enable --now cri-docker.socket

同样的一把梭。

安装k8s

apt-get update
apt-get install -y apt-transport-https ca-certificates curl
curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg
echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" |  tee /etc/apt/sources.list.d/kubernetes.list
apt-get update
apt-get install -y kubelet kubeadm kubectl
  mkdir -p $HOME/.kube
   cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
   chown $(id -u):$(id -g) $HOME/.kube/config

修改kubelet启动参数

nano /etc/systemd/system/kubelet.service.d/10-kubeadm.conf

在启动参数之后加入node-ip=公网ip

systemctl daemon-reload
systemctl restart kubelet

创建master

kubeadm init \
--apiserver-advertise-address=193.122.124.173 \
--control-plane-endpoint=193.122.124.173 \
--service-cidr=10.96.0.0/12 \
--pod-network-cidr=10.244.0.0/16 \
--v=5 \
--cri-socket unix:///var/run/cri-dockerd.sock

nano /etc/kubernetes/manifests/kube-apiserver.yaml
加入 - --bind-address=0.0.0.0

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

创建网络

wget https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml
#修改
---
kind: Namespace
apiVersion: v1
metadata:
  name: kube-flannel
  labels:
    pod-security.kubernetes.io/enforce: privileged
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: flannel
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - get
- apiGroups:
  - ""
  resources:
  - nodes
  verbs:
  - list
  - watch
- apiGroups:
  - ""
  resources:
  - nodes/status
  verbs:
  - patch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  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:
  name: flannel
  namespace: kube-flannel
---
kind: ConfigMap
apiVersion: v1
metadata:
  name: kube-flannel-cfg
  namespace: kube-flannel
  labels:
    tier: node
    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",
      "Backend": {
        "Type": "vxlan"
      }
    }
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds
  namespace: kube-flannel
  labels:
    tier: node
    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: flannelcni/flannel-cni-plugin:v1.1.0 for ppc64le and mips64le (dockerhub limitations may apply)
        image: docker.io/rancher/mirrored-flannelcni-flannel-cni-plugin:v1.1.0
        command:
        - cp
        args:
        - -f
        - /flannel
        - /opt/cni/bin/flannel
        volumeMounts:
        - name: cni-plugin
          mountPath: /opt/cni/bin
      - name: install-cni
       #image: flannelcni/flannel:v0.20.0 for ppc64le and mips64le (dockerhub limitations may apply)
        image: docker.io/rancher/mirrored-flannelcni-flannel:v0.20.0
        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: flannelcni/flannel:v0.20.0 for ppc64le and mips64le (dockerhub limitations may apply)
        image: docker.io/rancher/mirrored-flannelcni-flannel:v0.20.0
        command:
        - /opt/bin/flanneld
        args:
        - --ip-masq
        - --kube-subnet-mgr
        - --iface=eth0
        - --public-ip=$(PUBLIC_IP)
        resources:
          requests:
            cpu: "100m"
            memory: "50Mi"
          limits:
            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: PUBLIC_IP
          valueFrom:  
            fieldRef: 
              fieldPath: status.podIP 
        - 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

创建worker节点

 kubeadm join 10.0.0.224:6443 --token k6i92h.hsrvdsmzvrnt22d0         --discovery-token-ca-cert-hash sha256:50fcf7caa1333268b214a8c6fe0f85786326fc561d89d0f85ebc64aecca1fcb9  --cri-socket unix:///var/run/cri-dockerd.sock

起飞

kubectl run ngx --image=nginx:alpine
kubectl get pod -o wide

生成加入命令

kubeadm token create --print-join-command

自动补全

apt-get install bash-completion
source /usr/share/bash-completion/bash_completion
kubectl completion bash | sudo tee /etc/bash_completion.d/kubectl > /dev/null
exec bash