長虹KDT6H電視機怎么開(長虹電視按鍵開機)

長虹KDT6H電視機怎么開(長虹電視按鍵開機)

前沿拓展：

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服務器信息

2GB及以上RAM，2個及以上CPU，30GB及以上硬盤

角色

IP

master1

192.168.220.140

node1

192.168.220.141

前期準備

1.設置服務器主機名在master1服務器上hostnamectl sethostname k8smaster1在node1服務器上hostnamectl sethostname k8snode12.兩臺服務器都添加hosts信息cat >> /etc/hosts << EOF192.168.220.140 k8smaster1192.168.220.141 k8snode1EOF3.兩臺服務器都關閉防火墻systemctl stop firewalldsystemctl disable firewalld4.兩臺服務器都關閉selinuxsetenforce 0 臨時關閉sed i &39;s/enforcing/disabled/&39; /etc/selinux/config 永久關閉5.兩臺服務器都關閉swapswapoff a 臨時關閉sed ri &39;s/.swap./&/&39; /etc/fstab 永久關閉6.兩臺服務器都將橋接的IPv4流量傳遞到iptables的鏈cat > /etc/sysctl.d/k8s.conf << EOFnet.bridge.bridgenfcallip6tables = 1net.bridge.bridgenfcalliptables = 1EOFsysctl system 使配置生效7.兩臺服務器都設置時間同步yum install ntpdate yntpdate time.windows.com

安裝docker（兩臺服務器都安裝）

1.安裝docker相關依賴yum y install yumutils2.配置docker yum源yumconfigmanager addrepo http://mirrors.aliyun.com/dockerce/linux/centos/dockerce.repo3.安裝指定版本dockeryum y install dockerce19.03.94.啟動并設置docker開機自啟systemctl start docker & systemctl enable docker

在master節點安裝

1.設置k8s阿里云源cat <<EOF > /etc/yum.repos.d/kubernetes.repo[kubernetes]name=Kubernetesbaseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetesel7x86_64/enabled=1gpgcheck=1repo_gpgcheck=1gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yumkey.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpmpackagekey.gpgEOF2.安裝指定版本的kubeadm,kubelet,kubectl yum y install kubeadm1.19.7 kubelet1.19.7 kubectl1.19.73.啟動kubelet并設置開機自啟systemctl enable kubelet && systemctl start kubelet注：kubectl 運行狀態在不斷重啟，沒關系，k8s初始化完成后就好了4.配置kubelet的cgroupscat >/etc/sysconfig/kubelet<<EOFKUBELET_EXTRA_ARGS=&34;cgroupdriver=cgroupfs podinfracontainerimage=registry.cnhangzhou.aliyuncs.com/google_containers/pauseamd64:3.1&34;EOF5.加載內核modprobe br_netfilter6.初始化k8skubeadm init imagerepository registry.aliyuncs.com/google_containers kubernetesversion v1.19.7 apiserveradvertiseaddress 192.168.220.140 podnetworkcidr=10.244.0.0/16 tokenttl 0初始化命令說明: iamgerepository:指定阿里云鏡像倉庫地址 kuberntesversion:指定需要的版本 apiserveradvertiseaddress:指定masterip podnetworkcidr:指定k8s的pod網段

k8s初始化完成后如下圖:

7.k8s初始化完成后，提示你輸入以下命令配置kubectlmkdir p $HOME/.kubesudo cp i /etc/kubernetes/admin.conf $HOME/.kube/configsudo chown $(id u):$(id g) $HOME/.kube/config8.查看節點狀態kubectl get node注：此時master處于NotReady狀態，這是因為還沒安裝flannel網絡配置插件9.安裝flannel鏈接：https://pan.baidu.com/s/1pbeHqgZb0BJ152aWMkAhWA 提取碼：je97下載kubeflannel.yamlmkdir flannelcd flannel將下載的文件上傳至該目錄kubectl apply f kubeflannel.yaml 起服務kubectl get pods n kubesystem 查看服務啟動狀況10.查看master節點狀態kubectl get nodes 由于flannel已啟動好，所以此時mater節點也變成ready狀態

在node節點安裝

1.設置k8s阿里云源cat <<EOF > /etc/yum.repos.d/kubernetes.repo[kubernetes]name=Kubernetesbaseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetesel7x86_64/enabled=1gpgcheck=1repo_gpgcheck=1gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yumkey.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpmpackagekey.gpgEOF2.安裝指定版本的kubeadm,kubelet，node節點不需要安裝kubectlyum y install kubeadm1.19.7 kubelet1.19.7 3.啟動kubelet并設置開機自啟systemctl enable kubelet && systemctl start kubelet注：kubectl 運行狀態在不斷重啟，待后面加入master節點后會啟動完成4.配置kubelet的cgroupscat >/etc/sysconfig/kubelet<<EOFKUBELET_EXTRA_ARGS=&34;cgroupdriver=cgroupfs podinfracontainerimage=registry.cnhangzhou.aliyuncs.com/google_containers/pauseamd64:3.1&34;EOF5.加載內核modprobe br_netfilter

將node節點加入到master組成k8s集群

1.在master節點生成加入集群密鑰kubeadm token create printjoincommand

2.在node節點輸入上面master生成的加入命令kubeadm join 192.168.220.140:6443 token v0qrl7.72sjibymtu2kdth6 discoverytokencacerthash sha256:a884b19685668e0e9ed6b5f297080f6ff6f255c3cce791e92dac7376f9569965

3.在master節點查看node節點是否加入成功kubectl get node注:node加入后，flannel首先往node上生成一個pod,待pod啟動完成后，node節點就會變成ready狀態[root@k8smaster1 ~] kubectl get nodeNAME STATUS ROLES AGE VERSIONk8smaster1 Ready master 176m v1.19.7k8snode1 Ready <none> 54s v1.19.7

至此，一個master一個node節點即一主一從的k8s集群大體完成，剩下需對集群進行優化

問題一:kubectl get cs查看組件狀態，發現組件有兩個報Unhealthy的狀態，只需要修改如下兩個配置文件：vi /etc/kubernetes/manifests/kubescheduler.yamlvi /etc/kubernetes/manifests/kubecontrollermanager.yaml注釋掉倆文件的這一行 port=0 systemctl restart kubelet 修改完后重啟kubelet服務即可恢復

問題二: [root@k8smaster1 ~] kubectl get nodesNAME STATUS ROLES AGE VERSIONk8smaster1 Ready master 3h24m v1.19.7k8snode1 Ready <none> 28m v1.19.7查看節點狀況，發現node1節點的ROLES為<none>，其實這不算啥問題，但不好看將k8s的node節點k8snode1的角色設置為node[root@k8smaster1 ~] kubectl label node k8snode1 kubernetes.io/role=nodenode/k8snode1 labeled[root@k8smaster1 ~] kubectl get nodesNAME STATUS ROLES AGE VERSIONk8smaster1 Ready master 6h1m v1.19.7k8snode1 Ready node 3h5m v1.19.7

拓展知識：