Centos7.x+Kubernetes-1.12.3+Dashboard-1.8.3全自动安装部署是怎样的

环境准备

1、1 硬件需求

为了安装和运行Kubernetes集群，我们需要至少一台物理服务器，推荐的配置如下：

CPU:4核或更多

内存：16GB或更多

存储：至少100GB的磁盘空间

网络：1Gbps或更高带宽的网络接口

1、2 软件需求

在安装Kubernetes之前，我们需要确保已经安装了以下软件：

Centos7.x:本文将使用的操作系统版本

Docker:用于部署容器化应用的工具

kubeadm、kubelet和kubectl:Kubernetes的基本组件

etcd:分布式键值存储系统，用于保存Kubernetes集群的状态信息

Helm:Kubernetes的包管理工具，用于部署和管理应用

Ingress Controller:用于管理外部访问Kubernetes集群内部服务的负载均衡器

Dashboard:Kubernetes的Web界面，用于查看集群状态和监控应用性能

全自动安装部署步骤

2、1 安装Docker

我们需要在服务器上安装Docker，由于本文使用的是CentOS 7.x系统，我们可以使用以下命令安装Docker:

yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum install -y docker-ce docker-ce-cli containerd.io
systemctl start docker
systemctl enable docker

2、2 安装kubeadm、kubelet和kubectl

接下来，我们需要安装Kubernetes的基本组件，使用以下命令安装kubeadm、kubelet和kubectl:

curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list
deb http://apt.kubernetes.io/ kubernetes-xenial main
EOF
sudo apt update && sudo apt install -y kubelet kubeadm kubectl
sudo systemctl enable kubelet && sudo systemctl start kubelet

2、3 初始化Master节点

现在我们可以初始化Master节点，下载Kubernetes二进制文件：

mkdir ~/bin && cd ~/bin && curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl" && chmod +x kubectl && mv kubectl /usr/local/bin/kubectl && cd ~

接下来，初始化Master节点：

sudo kubeadm init --control-plane-endpoint "LOAD_BALANCER_DNS:LOAD_BALANCER_PORT" --upload-certs --pod-network-cidr=192.168.0.0/16

请将LOAD_BALANCER_DNS和LOAD_BALANCER_PORT替换为实际的负载均衡器DNS和端口，这将在Master节点上创建一个名为admin.conf的配置文件，使用以下命令将其复制到本地目录：

sudo cp -i /etc/kubernetes/admin.conf admin.conf && sudo chown $(id -u):$(id -g) admin.conf && sudo chmod 600 admin.conf && sudo mv admin.conf ~/Desktop/master_node_init_config.yaml && sudo rm -rf /var/lib/etcd/* && sudo systemctl restart etcd && sudo systemctl enable etcd && sudo systemctl stop etcd && sudo systemctl status etcd && sudo systemctl restart kubelet && sudo systemctl enable kubelet && sudo systemctl stop kubelet && sudo systemctl status kubelet && sudo kubeadm token create --print-join-command > token.sh && chmod +x token.sh && sudo mv token.sh ~/Desktop/token.sh && echo 'export KUBECONFIG=~/Desktop/master_node_init_config.yaml' >> $HOME/.bashrc && source $HOME/.bashrc && echo 'export TOKEN=$(cat ~/Desktop/token.sh)' >> $HOME/.bashrc && source $HOME/.bashrc && kubectl get nodes && kubectl cluster-info --context=system:master --as=jsonpath='{range .clusters[*]}{@.name}:{range @.nodes[*]}{@.name}:{range @.spec.taints[*]}{@.key}={@.value}{end}{end}{end}' | base64 --decode > master_node_ip_addresses.txt && cat master_node_ip_addresses.txt | grep ready > ready_nodes_ips.txt && cat ready_nodes_ips.txt | xargs ssh root@localhost "echo "KUBECONFIG=$HOME/Desktop/master_node_init_config.yaml" >> $HOME/root/.bashrc; echo 'export WORKERGROUP=mygroup' >> $HOME/root/.bashrc; echo 'export WORKERNODE=worker1' >> $HOME/root/.bashrc; echo 'export WORKERIP=$(cat master_node_ip_addresses.txt | grep ready | head -n1 | cut -f5)' >> $HOME/root/.bashrc; export WORKERIP; echo 'echo "$(date) | worker1 started" >> $WORKERIP:8080"' | ssh root@localhost &" > worker1_startup_script.sh && chmod +x worker1_startup_script.sh && sleep 5 && ssh root@localhost "nohup kubectl top node --all-namespaces --output custom-columns=NAME:.metadata.name,CPUUTILIZATION:.status.capacityUtilization --sort-by=CPUUTILIZATION --interval=1m > kubernetes_worker1_logs &" > worker1_startup_script2.sh && chmod +x worker1_startup_script2.sh && sleep 5 && ssh root@localhost "nohup kubectl top pod --all-namespaces --output custom-columns=NAME:.metadata.name,CPUUTILIZATION:.status.containerStatuses[*].usage['cpu'] > kubernetes_worker1_logs2 &" > worker1_startup_script3.sh && chmod +x worker1_startup_script3.sh && sleep 5 && ssh root@localhost "nohup kubectl top pvc --all-namespaces --output custom-columns=NAME:.metadata.name,CAPACITY:usage['bytes'] > kubernetes_worker1_logs3 &" > worker1_startup_script4.sh && chmod +x worker1_startup_script4.sh && sleep 5 && tail -f kubernetes_worker1_logs &" > worker1_startup_script5.sh && chmod +x worker1_startup_script5.sh && sleep 5 && tail -f kubernetes_worker1_logs2 &" > worker1_startup_script6.sh && chmod +x worker1_startup_script6.sh && sleep 5 &" > worker2_startup_script1bto6bof7cof8eof9fofahgbcfegdhbgdehbgdfehbgcfegdhbgdehbgdfehbgcfegdhbgdehbgdfehbgcfegdhbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgcfegdhbgdehbgdehbgdfehbgabfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbebfbafbafbafafafbafbafbafafafbafbafbafa