wordpress搭建电商教程,sem优化和seo的区别,兰州易天网站建设公司有哪些,快速搭建论坛1. Kubernetes简介
Kubernetes#xff08;k8s#xff09;是谷歌开源的容器编排平台#xff0c;用于自动化部署、扩展和管理容器化应用程序。它具有以下特点#xff1a;
开源容器化自动部署扩展高可用
2. Kubernetes架构
Kubernetes遵循主从式架构设计#xff0c;主要分…1. Kubernetes简介
Kubernetesk8s是谷歌开源的容器编排平台用于自动化部署、扩展和管理容器化应用程序。它具有以下特点
开源容器化自动部署扩展高可用
2. Kubernetes架构
Kubernetes遵循主从式架构设计主要分为工作节点Node组件和控制平面组件。
2.1 控制平面组件
Kubernetes Master集群的主要控制单元用于管理工作负载并指导整个系统的通信。Kube-APIServer提供集群网关是整个集群的控制中枢。Scheduler负责资源调度将Pod调度到对应的主机上。Controller Manager负责维护集群的状态如故障检测、内存垃圾回收等。etcd用于可靠的存储集群的配置数据是一种持久性、轻量型、分布式的键值数据存储组件。
2.2 工作节点组件
Kubelet在Node节点上运行负责维护Pod的生命周期。Kube-Proxy负责为服务提供集群内部的服务发现和应用的负载均衡。容器运行时如Docker负责镜像管理和Pod和容器的真正运行。
3. 为什么需要Kubernetes
随着容器化项目的增多管理容器变得越来越复杂Kubernetes提供了以下优势
自动化部署和回滚扩缩容服务发现和负载均衡隔离环境统一配置管理
4. Kubeadm快速安装Kubernetes集群
Kubeadm是Kubernetes官方提供的集群安装工具可以快速安装和初始化Kubernetes集群。
1.实验环境 主机名 IP地址 操作系统 主要软件 k8s-master 192.168.10.101 CentOS 7.9 Docker CE, Kube-apiserver, Kube-controllermanager, Kubescheduler, Kubelet ,Etcd Kube-proxy k8s-node01 192.168.10.102 CentOS 7.9 Docker CE, Kubectl, Kube-proxy, Calico k8s-node02 192.168.10.103 CentOS 7.9 Docker CE, Kubectl, Kube-proxy Calico
2.基础环境准备三台主机都需要执行
升级内核
# 删除现有的yum仓库配置文件
rm -rf /etc/yum.repos.d/*# 添加CentOS Base仓库
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo# 添加EPEL仓库
curl -o /etc/yum.repos.d/epel.repo https://mirrors.aliyun.com/repo/epel-7.repo# 清除yum缓存
yum clean all# 更新系统
yum -y update# 升级系统
yum -y upgrade# 导入elrepo的GPG密钥
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org# 安装elrepo仓库
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm# 启用elrepo仓库并安装最新的Linux内核
yum --enablerepoelrepo-kernel install -y kernel-ml-devel kernel-ml# 设置默认内核启动顺序
grub2-set-default 0# 重启系统
reboot
3部署docker环境三台主机都需要
可以去看这个文章01 Docker概念和部署-CSDN博客https://blog.csdn.net/qq_51678989/article/details/142024581?spm1001.2014.3001.5501
4部署Kubernetes集群
1配置三台主机的主机名
主机一
hostnamectl set-hostname k8s-master
bash 主机二
hostnamectl set-hostname k8s-node01
bash
主机三
hostnamectl set-hostname k8s-node02
bash
2 在三台主机上绑定hosts
cat EOF/etc/hosts
192.168.10.101 k8s-master
192.168.10.102 k8s-node01
192.168.10.103 k8s-node02
EOF
(3) 关闭交换分区
swapoff -a
sed -i /swap/s/^/#/ /etc/fstab
(4) 在三台主机上安装常用软件
yum -y install vim wget net-tools lrzsz
(5) 配置kubarnetes的YUM源三台主机都要配置
cat EOF /etc/yum.repos.d/kubernetes.repo
[kubernetes]
nameKubernetes
baseurlhttps://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled1
gpgcheck1
repo_gpgcheck1
gpgkeyhttps://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpgrrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.al
EOF
6安装kubeletkubeadmkubectl
yum -y install kubelet-1.23.0 kubeadm-1.23.0 kubectl-1.23.0
8生产初始化配置文件只在mater节点修改
[rootk8s-master ~]# kubeadm config print init-defaults init-config.yaml
[rootk8s-master ~]# vim init-config.yaml apiVersion: kubeadm.k8s.io/v1beta3
bootstrapTokens:
- groups:- system:bootstrappers:kubeadm:default-node-tokentoken: abcdef.0123456789abcdefttl: 24h0m0susages:- signing- authentication
kind: InitConfiguration
localAPIEndpoint:advertiseAddress: 192.168.10.101 //端口bindPort: 6443
nodeRegistration:criSocket: /var/run/dockershim.sockimagePullPolicy: IfNotPresentname: k8s-master //名字taints: null
---
apiServer:timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta3
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns: {}
etcd:local:dataDir: /var/lib/etcd
imageRepository: registry.aliyuncs.com/google_containers
kind: ClusterConfiguration
kubernetesVersion: 1.23.0
networking:dnsDomain: cluster.localserviceSubnet: 10.96.0.0/12podSubnet: 10.244.0.0/16 //增加访问地址
scheduler: {}9导入镜像
链接: 百度网盘 请输入提取码 提取码: rmgq 复制这段内容后打开百度网盘手机App操作更方便哦
10初始化
[rootk8s-master ~]# kubeadm init --configinit-config.yaml
kubeadm join 192.168.10.101:6443 --token abcdef.0123456789abcdef \--discovery-token-ca-cert-hash sha256:ec16f88acf12c7186e5fa237ab03615b3b2bedd212080aee087ddea1933b6942
看见这个算初始化成功
(11) 让其他节点加入
node1
[rootk8s-node01 ~]# kubeadm join 192.168.10.101:6443 --token abcdef.0123456789abcdef \--discovery-token-ca-cert-hash sha256:ec16f88acf12c7186e5fa237ab03615b3b2bedd212080aee087ddea1933b6942node2
[rootk8s-node02 ~]# kubeadm join 192.168.10.101:6443 --token abcdef.0123456789abcdef \--discovery-token-ca-cert-hash sha256:ec16f88acf12c7186e5fa237ab03615b3b2bedd212080aee087ddea1933b6942
12配置环境
[rootk8s-master ~]# mkdir -p $HOME/.kube
[rootk8s-master ~]# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
[rootk8s-master ~]# sudo chown $(id -u):$(id -g) $HOME/.kube/config
[rootk8s-master ~]# export KUBECONFIG/etc/kubernetes/admin.conf
13导入calico.yaml包
已经下载好的
链接: 百度网盘 请输入提取码 提取码: 7a67 复制这段内容后打开百度网盘手机App操作更方便哦
官网获取
wget https://docs.projectcalico.org/manifests/calico.yaml
14 部署 Calico 网络
[rootk8s-master ~]# kubectl apply -f calico.yaml
[rootk8s-master ~]# kubectl get pod -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-64cc74d646-l2d94 1/1 Running 0 28s
kube-system calico-node-697r4 1/1 Running 0 28s
kube-system calico-node-cl4n9 1/1 Running 0 28s
kube-system calico-node-xzgjr 1/1 Running 0 28s
kube-system coredns-6d8c4cb4d-9fsq7 1/1 Running 0 11m
kube-system coredns-6d8c4cb4d-l8wr4 1/1 Running 0 11m
kube-system etcd-k8s-master 1/1 Running 0 11m
kube-system kube-apiserver-k8s-master 1/1 Running 0 11m
kube-system kube-controller-manager-k8s-master 1/1 Running 0 11m
kube-system kube-proxy-97rxx 1/1 Running 0 9m24s
kube-system kube-proxy-kd5fz 1/1 Running 0 10m
kube-system kube-proxy-t75pz 1/1 Running 0 11m
kube-system kube-scheduler-k8s-master 1/1 Running 0 11m
[rootk8s-master ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master Ready control-plane,master 12m v1.23.0
k8s-node01 Ready none 11m v1.23.0
k8s-node02 Ready none 9m53s v1.23.0
[rootk8s-master ~]#
15查看利用情况
[rootk8s-master ~]# kubectl top node
error: Metrics API not available
#发现没有
16获取Kubernetes 的命令行工具包
链接: 百度网盘 请输入提取码 提取码: mdwc 复制这段内容后打开百度网盘手机App操作更方便哦
17查询利用率
[rootk8s-master ~]# kubectl create -f components.yaml
serviceaccount/metrics-server created
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrole.rbac.authorization.k8s.io/system:metrics-server created
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
service/metrics-server created
deployment.apps/metrics-server created
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created
[rootk8s-master ~]# kubectl top node
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
k8s-master 118m 5% 1443Mi 38%
k8s-node01 65m 3% 799Mi 21%
k8s-node02 78m 3% 1988Mi 52%
[rootk8s-master ~]# 17图形化界面
该链接提供了图形化
链接: 百度网盘 请输入提取码 提取码: vcih 复制这段内容后打开百度网盘手机App操作更方便哦
[rootk8s-master ~]# mkdir -p /opt/k8s/dashboard //创建一个目录
[rootk8s-master ~]# cd /opt/k8s/dashboard/
[rootk8s-master dashboard]# rz -E //把链接的包拉出来
rz waiting to receive.
[rootk8s-master dashboard]# kubectl create -f .
serviceaccount/admin-user created
clusterrolebinding.rbac.authorization.k8s.io/admin-user created
namespace/kubernetes-dashboard created
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
deployment.apps/dashboard-metrics-scraper created
[rootk8s-master ~]# kubectl get pod -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-64cc74d646-7npbs 1/1 Running 0 4m2s
kube-system calico-node-7z94t 1/1 Running 0 4m2s
kube-system calico-node-b65zv 1/1 Running 0 4m2s
kube-system calico-node-hsgvn 1/1 Running 0 4m2s
kube-system coredns-6d8c4cb4d-nhttz 1/1 Running 0 7m13s
kube-system coredns-6d8c4cb4d-twbxs 1/1 Running 0 7m13s
kube-system etcd-k8s-master 1/1 Running 0 7m28s
kube-system kube-apiserver-k8s-master 1/1 Running 0 7m28s
kube-system kube-controller-manager-k8s-master 1/1 Running 0 7m28s
kube-system kube-proxy-8qnjf 1/1 Running 0 7m13s
kube-system kube-proxy-m8426 1/1 Running 0 5m41s
kube-system kube-proxy-xjb6k 1/1 Running 0 5m45s
kube-system kube-scheduler-k8s-master 1/1 Running 0 7m28s
kube-system metrics-server-66bdc46d86-nht4z 1/1 Running 0 3m21s
kubernetes-dashboard dashboard-metrics-scraper-7fcdff5f4c-mnnrl 1/1 Running 0 2m21s
kubernetes-dashboard kubernetes-dashboard-df74f58f9-zjnj8 1/1 Running 0 2m21s
(18)获取token
[rootk8s-master ~]# kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard //修改一下端口改成31245
[rootk8s-master ~]# kubectl get svc -n kubernetes-dashboard
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
dashboard-metrics-scraper ClusterIP 10.103.197.81 none 8000/TCP 7m5s
kubernetes-dashboard NodePort 10.110.1.207 none 443:31245/TCP 7m5s[rootk8s-master ~]# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin -user | awk {print $1})token: eyJhbGciOiJSUzI1NiIsImtpZCI6IjlmeExvcUp6ZFBZaUQwZXE4cXQ3U3JOZzcwU2RfVFlDVWZXN3lzWVVPMzgifQ.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.akwFAPPwWS18Jb7NtyL9C7mXl6gHJWEzT_EqyND5BFJdGnP56kXJKO68MHy0KEoJboAtQE-vVlFQTBkFsNPEYJ2L-AQ6UjQObgiMPUfFTuWAu2KsqjAwQDv-THT72KTwx0N0F9KRpWZ9OHbvTsHztMrGfWMrZAHRBKEv6IBPAsL0C0OQujqE3Tx6Z7Fno8iHt5cYaanwsZV9DXw5-6WVhejMUjQMGcAMGIjiLRLqhgjC3LRguhPyakt0bgp57oa77FOK71T_b3D1kDtAOqjghbji4BagloA48odsCFBHEzl6xv3UH9glQsf9cAFCkFHr9TRQ9IYx8jIC4L7DjPZI2g--test-type --ignore-certificate-errors在谷歌属性添加 复制token输入浏览器中
