任务目标

  1. 完成高可用k8s集群安装部署

任务平台

  1. 物理设备—
  2. 操作系统：openEuler 22.03 LTS SP2

部署指南

集群拓扑图

任务一：配置准备

  1. 重命名hostname
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# 将10.10.3.121的主机名改为future-k8s-node0
hostnamectl set-hostname future-k8s-node0 && bash
# 将10.10.3.122的主机名改为future-k8s-node1
hostnamectl set-hostname future-k8s-node1 && bash
# 将10.10.3.123的主机名改为future-k8s-node2
hostnamectl set-hostname future-k8s-node2 && bash
# 将10.10.3.124的主机名改为future-k8s-node3
hostnamectl set-hostname future-k8s-node3 && bash
  1. 安装前的配置修改
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# 关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
firewall-cmd --state
 
# selinux永久关闭
setenforce 0
 sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
cat /etc/selinux/config

# swap永久关闭
swapoff --all
swapoff -a
sed -ri 's/.*swap.*/#&/' /etc/fstab
cat /etc/fstab

# 添加hosts
cat >> /etc/hosts << EOF
10.10.3.121 future-k8s-node0
10.10.3.122 future-k8s-node1
10.10.3.123 future-k8s-node2
10.10.3.124 future-k8s-node3
10.10.3.125 future-k8s-vip
EOF
#查看
cat /etc/hosts


# 添加网桥过滤及内核转发配置文件
cat > /etc/sysctl.d/k8s.conf << EOF
 net.bridge.bridge-nf-call-ip6tables = 1
 net.bridge.bridge-nf-call-iptables = 1
 net.ipv4.ip_forward = 1
EOF
# 查看
cat /etc/sysctl.d/k8s.conf
# 加载br_netfilter模块
modprobe br_netfilter
# 查看是否加载
lsmod | grep br_netfilter
# 加载网桥过滤及内核转发配置文件
sysctl -p /etc/sysctl.d/k8s.conf

#同步时间
yum install ntp -y
systemctl start ntpd
systemctl enable ntpd
yum install chrony  -y
systemctl start chrony
systemctl enable chronyd
#修改配置，添加内容
echo "
server 10.10.3.70 iburst
allow 10.10.3.0/24
" >> /etc/chrony.conf
timedatectl set-ntp true
systemctl restart chronyd
timedatectl status
date
  1. 安装ipset及ipvsadm
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 # 安装ipset及ipvsadm
 yum -y install ipset ipvsadm
 配置ipvsadm模块加载方式
 # 添加需要加载的模块
echo ' #!/bin/bash
 modprobe -- ip_vs
 modprobe -- ip_vs_rr
 modprobe -- ip_vs_wrr
 modprobe -- ip_vs_sh
 modprobe -- nf_conntrack
' > /etc/sysconfig/modules/ipvs.modules
#查看
cat /etc/sysconfig/modules/ipvs.modules
 # 授权、运行、检查是否加载
chmod 755 /etc/sysconfig/modules/ipvs.modules 
bash /etc/sysconfig/modules/ipvs.modules 
lsmod | grep -e ip_vs -e nf_conntrack

#重启
reboot

配置准备完成后，所有节点都需重启

任务二：安装docker

  1. 配置Docker CE的yum存储库。打开docker-ce.repo的文件，并将以下内容复制到文件中：
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echo '
[docker-ce-stable]
name=Docker CE Stable - $basearch
baseurl=https://download.docker.com/linux/centos/7/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg ' > /etc/yum.repos.d/docker-ce.repo

保存并退出文件。

  1. 安装Docker CE。运行以下命令来安装Docker CE：
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 yum -y install docker-ce docker-ce-cli  containerd.io
#启动docker并设置开机自启
systemctl start docker  
systemctl enable docker
#查看版本
docker -v
docker compose version
  1. Docker配置修改，设置cgroup驱动，使用systemd，配置修改为如下。
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#将配置写入daemon.json文件
echo '{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "data-root": "/data/docker"
} ' > /etc/docker/daemon.json
#查看
cat /etc/docker/daemon.json
systemctl daemon-reload
systemctl restart docker
docker info
  1. 创建所需目录
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mkdir  cri-dockerd   calico dashboard  docker  metrics-server  script  ingress-nginx

任务三：安装cri-dockerd （k8s 1.24及以上版本）

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cd /data/cri-dockerd
# 下载cri-dockerd安装包
wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.4/cri-dockerd-0.3.4-3.el8.x86_64.rpm
# 安装cri-dockerd
rpm -ivh cri-dockerd-0.3.4-3.el8.x86_64.rpm
docker pull registry.aliyuncs.com/google_containers/pause:3.9
# 修改镜像地址为国内，否则kubelet拉取不了镜像导致启动失败
sed -i.bak 's|ExecStart=.*$|ExecStart=/usr/bin/cri-dockerd --container-runtime-endpoint fd:// --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.9|g' /usr/lib/systemd/system/cri-docker.service
cat /usr/lib/systemd/system/cri-docker.service
# 启动cri-dockerd
systemctl daemon-reload 
systemctl start cri-docker.service
systemctl enable cri-docker.service

任务四：安装高可用组件

部署高可用集群需要安装keepalived和haproxy，实现**master节点高可用，在各master节点操作**

  1. 安装keepalived与haproxy
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yum install keepalived haproxy -y
  1. 备份keepalived与haproxy配置文件
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cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak
cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak

  1. 修改各master节点的/etc/keepalived/keepalived.conf文件

    1. future-k8s-node0

    2. ```Shell
      echo ‘
      global_defs {
      router_id k8s
      }

      vrrp_script check_haproxy {

      script "killall -0 haproxy"
interval 3
weight -2
fall 10
rise 2

      }

      vrrp_instance VI_1 {

      state MASTER  #主节点 则为MASTER ,其他则为 BACKUP
interface ens192  #网卡名称
virtual_router_id 51
priority 250   #优先级
nopreempt   #设置非抢占模式
advert_int 1
authentication {
    auth_type PASS
    auth_pass ceb1b3ec013d66163d6ab
}
virtual_ipaddress {
    10.10.3.125/24   #虚拟ip
}
track_script {
    check_haproxy
}

      }
      ‘ > /etc/keepalived/keepalived.conf

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      3. future-k8s-node1
      4. ```Shell
         echo '
         global_defs {
            router_id k8s
         }
         
         vrrp_script check_haproxy {
             script "killall -0 haproxy"
             interval 3
             weight -2
             fall 10
             rise 2
         }
         
         vrrp_instance VI_1 {
             state BACKUP  #主节点 则为MASTER ,其他则为 BACKUP
             interface ens192  #网卡名称
             virtual_router_id 51
             priority 200   #优先级
             nopreempt   #设置非抢占模式
             advert_int 1
             authentication {
                 auth_type PASS
                 auth_pass ceb1b3ec013d66163d6ab
             }
             virtual_ipaddress {
                 10.10.3.125/24   #虚拟ip
             }
             track_script {
                 check_haproxy
             }
         }    
         ' > /etc/keepalived/keepalived.conf

    3. future-k8s-node2

    4. ```Shell
      echo ‘
      global_defs {
      router_id k8s
      }

      vrrp_script check_haproxy {

      script "killall -0 haproxy"
interval 3
weight -2
fall 10
rise 2

      }

      vrrp_instance VI_1 {

      state BACKUP  #主节点 则为MASTER ,其他则为 BACKUP
interface ens192  #网卡名称
virtual_router_id 51
priority 150   #优先级
nopreempt   #设置非抢占模式
advert_int 1
authentication {
    auth_type PASS
    auth_pass ceb1b3ec013d66163d6ab
}
virtual_ipaddress {
    10.10.3.125/24   #虚拟ip
}
track_script {
    check_haproxy
}

      }
      ‘ > /etc/keepalived/keepalived.conf

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      2. 修改各master节点的`/etc/haproxy/haproxy.cfg`文件，（三个master节点的配置文件相同）

      ```Shell
      echo "
      #---------------------------------------------------------------------
      # Global settings
      #---------------------------------------------------------------------
      global
          # to have these messages end up in /var/log/haproxy.log you will
          # need to:
          # 1) configure syslog to accept network log events.  This is done
          #    by adding the '-r' option to the SYSLOGD_OPTIONS in
          #    /etc/sysconfig/syslog
          # 2) configure local2 events to go to the /var/log/haproxy.log
          #   file. A line like the following can be added to
          #   /etc/sysconfig/syslog
          #
          #    local2.*                       /var/log/haproxy.log
          #
          log         127.0.0.1 local2

          chroot      /var/lib/haproxy
          pidfile     /var/run/haproxy.pid
          maxconn     4000
          user        haproxy
          group       haproxy
          daemon

          # turn on stats unix socket
          stats socket /var/lib/haproxy/stats
      #---------------------------------------------------------------------
      # common defaults that all the 'listen' and 'backend' sections will
      # use if not designated in their block
      #---------------------------------------------------------------------
      defaults
          mode                    http
          log                     global
          option                  httplog
          option                  dontlognull
          option http-server-close
          option forwardfor       except 127.0.0.0/8
          option                  redispatch
          retries                 3
          timeout http-request    10s
          timeout queue           1m
          timeout connect         10s
          timeout client          1m
          timeout server          1m
          timeout http-keep-alive 10s
          timeout check           10s
          maxconn                 3000
      #---------------------------------------------------------------------
      # kubernetes apiserver frontend which proxys to the backends
      #---------------------------------------------------------------------
      frontend kubernetes-apiserver
          mode                 tcp
          bind                 *:16443 #高可用监控端口，初始化k8s集群时会用
          option               tcplog
          default_backend      kubernetes-apiserver
      #---------------------------------------------------------------------
      # round robin balancing between the various backends
      #---------------------------------------------------------------------
      backend kubernetes-apiserver
          mode        tcp
          balance     roundrobin
          server      future-k8s-node0   10.10.3.121:6443 check
          server      future-k8s-node1   10.10.3.122:6443 check
          server      future-k8s-node2   10.10.3.123:6443 check

      #---------------------------------------------------------------------
      # collection haproxy statistics message
      #---------------------------------------------------------------------
      listen stats
          bind                 *:1080
          stats auth           admin:awesomePassword
          stats refresh        5s
          stats realm          HAProxy\ Statistics
          stats uri            /admin?stats

      " > /etc/haproxy/haproxy.cfg

  2. 启动（各master节点按顺序启动）

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#启动keepalived  
systemctl enable keepalived  && systemctl start keepalived  
#启动haproxy 
systemctl enable haproxy && systemctl start haproxy
systemctl status keepalived
systemctl status haproxy
  1. 在future-k8s-node0查看绑定的vip地址

ip add 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: ens192: mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:50:56:9a:eb:48 brd ff:ff:ff:ff:ff:ff inet 10.10.3.121/24 brd 10.10.3.255 scope global noprefixroute ens192 valid_lft forever preferred_lft forever inet 10.10.3.125/24 scope global ens192 valid_lft forever preferred_lft forever inet6 fe80::250:56ff:fe9a:eb48/64 scope link noprefixroute valid_lft forever preferred_lft forever

任务五：部署k8s集群

  1. 添加yum软件源

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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

  1. 安装kubeadm，kubelet和kubectl

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# 安装kubelet、kubeadm、kubectl
yum install -y kubelet-1.27.0 kubeadm-1.27.0 kubectl-1.27.0 --disableexcludes=kubernetes

#将cgroup改为systemd
echo 'KUBELET_EXTRA_ARGS="--cgroup-driver=systemd"' > /etc/sysconfig/kubelet
# 查看
cat /etc/sysconfig/kubelet
# 设置开机启动
systemctl start kubelet.service
systemctl enable kubelet.service
systemctl status kubelet.service

#查看版本
 kubeadm version
 kubelet --version
 kubectl version

  1. 初始化k8s集群（future-k8s-node0节点）

    方式一：使用配置文件初始化
    1. 导出默认配置文件 (可选)

    暂时无法在飞书文档外展示此内容

    1. 配置文件
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    echo '
    apiVersion: kubeadm.k8s.io/v1beta3
    kind: InitConfiguration
    localAPIEndpoint:
      advertiseAddress: 10.10.3.125  #虚拟ip
      bindPort: 6443
    nodeRegistration:
      criSocket: unix:///var/run/cri-dockerd.sock
    ---
    apiServer:
      certSANs:    #master节点与对应主机名
        - future-k8s-node0
        - future-k8s-node1
        - future-k8s-node2
        - future-k8s-vip
        - 10.10.3.121
        - 10.10.3.122
        - 10.10.3.123
        - 10.10.3.125
        - 127.0.0.1
      timeoutForControlPlane: 4m0s
    apiVersion: kubeadm.k8s.io/v1beta3
    certificatesDir: /etc/kubernetes/pki
    clusterName: kubernetes
    controlPlaneEndpoint: "future-k8s-vip:16443" #虚拟ip及高可用配置的端口号
    controllerManager: {}
    dns: {}
    etcd:
      local:
        dataDir: /var/lib/etcd
    imageRepository: registry.aliyuncs.com/google_containers
    kind: ClusterConfiguration
    kubernetesVersion: 1.28.0
    networking:
      dnsDomain: cluster.local
      podSubnet: 10.244.0.0/16
      serviceSubnet: 10.96.0.0/12
    scheduler: {}
    ' > /data/script/kubeadm-config.yaml
    1. 集群初始化
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    kubeadm init --config kubeadm-config.yaml --upload-certs

    mkdir -p $HOME/.kube
    sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
    sudo chown $(id -u):$(id -g) $HOME/.kube/config
    方式二：使用命令初始化
    1. 部署master节点，在10.10.3.121执行，初始化master节点
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    kubeadm init \
      --apiserver-advertise-address=10.10.3.121 \
      --image-repository registry.aliyuncs.com/google_containers \
      --kubernetes-version v1.27.0 \
      --control-plane-endpoint=future-k8s-vip:16443 \  #虚拟ip（未定）
      --control-plane-endpoint=future-k8s-vip \  #虚拟ip（未定）
      --service-cidr=10.96.0.0/12 \
      --pod-network-cidr=10.244.0.0/16 \
      --cri-socket=unix:///var/run/cri-dockerd.sock \
      --ignore-preflight-errors=all 
      
      
    mkdir -p $HOME/.kube
    sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
    sudo chown $(id -u):$(id -g) $HOME/.kube/config
    1. 配置ssh免密码
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    #在10.10.3.121上生成公钥，复制到其他master节点上
    ssh-keygen -t rsa
    ssh-copy-id 10.10.3.122
    ssh-copy-id 10.10.3.123
    1. 将10.10.3.121上的证书拷贝到其他master节点
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    #在其他master节点创建证书存放目录
    cd /root && mkdir -p /etc/kubernetes/pki/etcd &&mkdir -p ~/.kube/

    #将future-k8s-node0的证书复制到future-k8s-node1
    scp /etc/kubernetes/pki/ca.crt 10.10.3.122:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/ca.key 10.10.3.122:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/sa.key 10.10.3.122:/etc/kubernetes/pki/
    scp /etc/kubernetes/pki/sa.pub 10.10.3.122:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/front-proxy-ca.crt 10.10.3.122:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/front-proxy-ca.key 10.10.3.122:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/etcd/ca.crt 10.10.3.122:/etc/kubernetes/pki/etcd/
    scp /etc/kubernetes/pki/etcd/ca.key 10.10.3.122:/etc/kubernetes/pki/etcd/

    #将future-k8s-node0的证书复制到future-k8s-node1
    scp /etc/kubernetes/pki/ca.crt 10.10.3.123:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/ca.key 10.10.3.123:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/sa.key 10.10.3.123:/etc/kubernetes/pki/
    scp /etc/kubernetes/pki/sa.pub 10.10.3.123:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/front-proxy-ca.crt 10.10.3.123:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/front-proxy-ca.key 10.10.3.123:/etc/kubernetes/pki/ 
    scp /etc/kubernetes/pki/etcd/ca.crt 10.10.3.123:/etc/kubernetes/pki/etcd/
    scp /etc/kubernetes/pki/etcd/ca.key 10.10.3.123:/etc/kubernetes/pki/etcd/

  2. 初始化其他master节点

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 kubeadm join future-k8s-vip:16443 --token ysl0xr.knx79yu06cldwiy1         --discovery-token-ca-cert-hash sha256:5dd8de94e08a560c7c2424dde0719a9f4e6ac4e5e5fe538ebbab0cbc5866b000         --control-plane  --cri-socket=unix:///var/run/cri-dockerd.sock
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

  1. 初始化node节点

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kubeadm join 10.10.3.121:6443 --token pzyo37.oaaqt1nrw3u7ijuj   --discovery-token-ca-cert-hash sha256:b8067f74af04b63399af1de28644223178e5d63e8258c25d465e78aca515e887 --cri-socket=unix:///var/run/cri-dockerd.sock

  1. 设置master节点允许调度POD （可选）

默认配置下Kubernetes不会将Pod调度到Master节点。如果希望将k8s-master也当作Node使用，需去除污点，开启调度。

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#查看默认配置的污点
kubectl describe node future-k8s-node2 |grep Taints

Taints: node-role.kubernetes.io/control-plane:NoSchedule

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#去除污点
kubectl taint nodes future-k8s-node2 node-role.kubernetes.io/control-plane-

添加woker标记

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#添加worker标记
kubectl label nodes future-k8s-node2 node-role.kubernetes.io/worker=
#删除worker标记
kubectl label nodes future-k8s-node2 node-role.kubernetes.io/worker-

任务六：安装网络插件(master)

安装calico

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mkdir /data/calico
cd  /data/calico
wget https://docs.tigera.io/archive/v3.25/manifests/calico.yaml
#修改calico.yaml找到CALICO_IPV4POOL_CIDR
vi calico.yaml
##############修改内容###################
 value: "10.244.0.0/16"
 ##############修改内容###################
 #在master节点上安装calico
 kubectl apply -f calico.yaml

查看节点状态

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# 查看所有的节点
kubectl get nodes
kubectl get nodes -o wide
#查看集群健康情况
 kubectl get cs

任务七：安装nginx进行测试

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# 创建Nginx程序
kubectl create deployment nginx --image=nginx
# 开放80端口
kubectl expose deployment nginx --port=80 --type=NodePort
# 查看pod状态
kubectl get pod
#查看service状态
kubectl get service
##########################################################################
NAME         TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
kubernetes   ClusterIP   10.96.0.1       <none>        443/TCP        5d1h
nginx        NodePort    10.98.221.224   <none>        80:32743/TCP   23s
##########################################################################
# 访问网页测试(端口号以查看service状态得到的为准)
http://10.10.3.121:32743/

任务八：安装Dashboard界面

  1. 下载yaml文件
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#创建存放目录
mkdir dashboard
cd dashboard/
#2.7
wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml
  1. 修改yaml文件
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vi recommended.yaml
#将副本设置为2
#################修改内容#######################
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  ports:
    - port: 443
      targetPort: 8443
      nodePort: 32009   #添加这一行，注意缩进对齐
  selector:
    k8s-app: kubernetes-dashboard
  type: NodePort          #添加这一行，注意缩进对齐
  #################修改内容#######################
  1. 应用安装，查看pod和svc
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#安装
kubectl apply -f recommended.yaml
#查看pod和svc
kubectl get pod,svc -o wide -n kubernetes-dashboard
#########################################################
NAME                                             READY   STATUS              RESTARTS   AGE   IP       NODE    NOMINATED NODE   READINESS GATES
pod/dashboard-metrics-scraper-5cb4f4bb9c-mg569   0/1     ContainerCreating   0          9s    <none>   node1   <none>           <none>
pod/kubernetes-dashboard-6967859bff-2968p        0/1     ContainerCreating   0          9s    <none>   node1   <none>           <none>

NAME                                TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)         AGE   SELECTOR
service/dashboard-metrics-scraper   ClusterIP   10.100.129.191   <none>        8000/TCP        9s    k8s-app=dashboard-metrics-scraper
service/kubernetes-dashboard        NodePort    10.106.130.53    <none>        443:31283/TCP   9s    k8s-app=kubernetes-dashboard
########################################################

使用所查看的svc，所提供的端口访问Dashboard

  1. 创建dashboard服务账户
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#创建一个admin-user的服务账户并与集群绑定
vi dashboard-adminuser.yaml
##################内容####################
apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user
  namespace: kubernetes-dashboard

---

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: admin-user
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: admin-user
  namespace: kubernetes-dashboard
  
---
# 创建密钥，获取服务帐户的长期持有者令牌
apiVersion: v1
kind: Secret
metadata:
  name: admin-user
  namespace: kubernetes-dashboard
  annotations:
    kubernetes.io/service-account.name: "admin-user"
type: kubernetes.io/service-account-token
  ##################内容####################
 
  #执行生效
  kubectl apply -f dashboard-adminuser.yaml
  1. 登录方式

方案一：获取长期可用token

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#将其保存在/data/dashboard/的admin-user.token文件中
cd /data/dashboard/
kubectl get secret admin-user -n kubernetes-dashboard -o jsonpath={".data.token"} | base64 -d > admin-user.token

获取长期可用token脚本

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#!/bin/bash
#作者：云
#############描述#############
:<<!
获取长期可用token脚本
将token存放在admin-user.token文件中
!
#############描述#############
kubectl get secret admin-user -n kubernetes-dashboard -o jsonpath={".data.token"} | base64 -d > admin-user.token

echo -e "\033[1;32m创建token成功，请在admin-user.token文件中查看\033[m"

方案二：使用使用 Kubeconfig 文件登录

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#定义 token 变量
DASH_TOCKEN=$(kubectl get secret admin-user -n kubernetes-dashboard -o jsonpath={".data.token"} | base64 -d)
#设置 kubeconfig 集群条目
kubectl config set-cluster kubernetes --server=10.10.3.121:6433 --kubeconfig=/root/dashbord-admin.conf
#设置 kubeconfig 用户条目
kubectl config set-credentials admin-user --token=$DASH_TOCKEN --kubeconfig=/root/dashbord-admin.conf
#设置 kubeconfig 上下文条目
kubectl config set-context admin-user@kubernetes --cluster=kubernetes --user=admin-user --kubeconfig=/root/dashbord-admin.conf
#设置 kubeconfig 当前上下文
kubectl config use-context admin-user@kubernetes  --kubeconfig=/root/dashbord-admin.conf

将生成的dashbord-admin.conf文件放到本地主机上，登录时选择Kubeconfig选项，选择 kubeconfig 文件登录

任务九：安装metrics-server

下载部署文件

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wget https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml -O metrics-server-components.yaml

修改yaml文件中的Deployment内容

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---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
spec:
  selector:
    matchLabels:
      k8s-app: metrics-server
  strategy:
    rollingUpdate:
      maxUnavailable: 0
  template:
    metadata:
      labels:
        k8s-app: metrics-server
    spec:
      containers:
      - args:
        - --cert-dir=/tmp
        - --secure-port=4443
        - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
        - --kubelet-use-node-status-port
        - --metric-resolution=15s
        - --kubelet-insecure-tls  #添加
        image: registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server:v0.6.4 #修改
        imagePullPolicy: IfNotPresent

#安装
kubectl apply -f metrics-server-components.yaml

查看metrics-server的pod状态

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kubectl get pods --all-namespaces | grep metrics

等待一些时间，查看查看各类监控图像已成功显示。

任务十：kubectl命令自动补全

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yum -y install bash-completion
source /usr/share/bash-completion/bash_completion
echo 'source <(kubectl completion bash)' >>  ~/.bashrc
bash

任务十一：ingress-nginx控制器安装

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#下载yaml文件
wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.0.0/deploy/static/provider/baremetal/deploy.yaml
#修改yaml文件中拉取镜像的地址
#####################修改内容######################
willdockerhub/ingress-nginx-controller:v1.0.0
hzde0128/kube-webhook-certgen:v1.0
#####################修改内容######################
#修改Deployment修改成DaemonSet
#修改网络模式为host network
#####################修改内容######################
template:
  spec:
    hostNetwork: true
    dnsPolicy: ClusterFirstWithHostNet
    tolerations:  #使用亲和性配置可在所有节点部署
      - key: node-role.kubernetes.io/control-plane
        operator: Exists
        effect: NoSchedule
     nodeSelector:
          kubernetes.io/os: linux
          custem/ingress-controller-ready: 'true'
      containers:
        - name: controller
#####################修改内容######################
#为工作节点设置标签（必需）
kubectl label nodes future-k8s-node0 custem/ingress-controller-ready=true
kubectl label nodes future-k8s-node1 custem/ingress-controller-ready=true
kubectl label nodes future-k8s-node2 custem/ingress-controller-ready=true
kubectl label nodes future-k8s-node3 custem/ingress-controller-ready=true

#安装
kubectl apply -f deploy.yaml

#查看状态
kubectl get pods -n ingress-nginx
################状态##################
NAME                                       READY   STATUS      RESTARTS   AGE
ingress-nginx-admission-create-2lz4v       0/1     Completed   0          5m46s
ingress-nginx-admission-patch-c6896        0/1     Completed   0          5m46s
ingress-nginx-controller-7575fb546-q29qn   1/1     Running     0          5m46s

任务十二：配置Dashboard代理

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echo '
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: k8s-dashboard
  namespace: kubernetes-dashboard
  labels:
    ingress: k8s-dashboard
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /  #重写路径
    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"  #http自动转https
    nginx.ingress.kubernetes.io/use-regex: "true"
    nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"

spec:
  ingressClassName: nginx 
  rules:
    - host: k8s.yjs.51xueweb.cn
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: kubernetes-dashboard
                port:
                  number: 443
' > /data/dashboard/dashboard-ingress.yaml