Rancher v2.4.8 容器管理平台-集群搭建（基于k8s）

整体概要

1、准备VMware+Ubuntu（ubuntu-20.04-live-server-amd64.iso）三台，一主两从（master，node1，node2）

2、在三台服务器上安装 docker

3、在master 主节点上使用docker 启动rancher

4、登录UI管理界面，添加集群

5、复制添加集群命令，在各node节点上执行（需要等待一会）

一、硬件需求

服务器系统	节点IP	节点类型	服务器-内存/CUP	hostname
Ubuntu 20.04	192.168.1.106	主节点	2G/4核	master
Ubuntu 20.04	192.168.1.108	工作节点1	2G/4核	node1
Ubuntu 20.04	192.168.1.109	工作节点2	2G/4核	node2

二、环境准备

1、VMware 虚拟机安装ubuntu-20.04.3-live-server-amd64.iso 稳定版系统，并配置固定IP。（此处安装步骤省略.....之前文档有写）

三、安装docker

# 卸载旧版本

sudo apt-get remove docker docker-engine docker.io containerd runc

# 更新包索引

sudo apt-get update

# 允许使用apt通过https使用存储库

sudo apt-get install \

    ca-certificates \

    curl \

    gnupg \

    lsb-release

# 添加Docker官方的GPG密钥

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

# 设置稳定存储库

echo \

  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \

  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# 更新包索引

sudo apt-get update

# 安装docker 引擎

sudo apt-get install docker-ce docker-ce-cli containerd.io

# 将普通用户添加到docker组

sudo gpasswd -a $user docker

# 更新docker组

newgrp docker

# 查看版本

docker version

四、安装rancher

sudo docker run -d --privileged --restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher:v2.4.8

yang@master:~$ sudo docker run -d --privileged --restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher:v2.4.8

Unable to find image 'rancher/rancher:v2.4.8' locally

v2.4.8: Pulling from rancher/rancher

f08d8e2a3ba1: Pull complete

3baa9cb2483b: Pull complete

94e5ff4c0b15: Pull complete

1860925334f9: Pull complete

ff9fca190532: Pull complete

9edbd5af6f75: Pull complete

39647e735cf8: Pull complete

3470d6dc42b2: Pull complete

0dceba04daf4: Pull complete

4ef3bd369bd9: Pull complete

72d28ebec0e3: Pull complete

3071d34067a8: Pull complete

7b7c203ef611: Pull complete

ed9cc207940b: Pull complete

687ea77f4cb7: Pull complete

b390c49bee0c: Pull complete

d2ae58f8a2c4: Pull complete

e82824cbbb83: Pull complete

2cca9f7c734e: Pull complete

Digest: sha256:5a16a6a0611e49d55ff9d9fbf278b5ca2602575de8f52286b18158ee1a8a5963

Status: Downloaded newer image for rancher/rancher:v2.4.8

ba1afc6482db94f2c5d9553286bd0a11c5df78b7f3106164e894a66b9e18c9cc

注：等待下载镜像，并启动，启动后使用本机真实IP访问

访问路径：

http://本机真实IP （默认端口80）

修改新密码并确认密码

我同意使用 Rancher 的条款和条件,然后点击Continue(继续).

点击保存 URL

五、安装kubectl命令行工具

1、软件包地址：https://github.com/kubernetes/kubernetes

2、点击二进制下载链接在 CHANGELOG 。

3、找到Client Binaries（也就是kubernetes，包里面包含了kubectl），选择对应操作系统的客户端（我这里是linux 的ubuntu系统，amd64位），然后复制连接地址或点击下载。

4、上传kubernetes-client-linux-amd64.tar.gz到master服务器

yang@master:~/ya$ ls

kubernetes-client-linux-amd64.tar.gz

yang@master:~/ya$ tar xf kubernetes-client-linux-amd64.tar.gz

yang@master:~/ya$ cd kubernetes/client/bin/

yang@master:~/ya/kubernetes/client/bin$ sudo chmod +x kubectl

yang@master:~/ya/kubernetes/client/bin$ sudo mv ./kubectl /usr/local/bin/kubectl
# 查看版本，返回版本信息，说明安装成功

yang@master:/usr/local/bin$ ./kubectl version --client

Client Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.0", GitCommit:"ab69524f795c42094a6630298ff53f3c3ebab7f4", GitTreeState:"clean", BuildDate:"2021-12-07T18:16:20Z", GoVersion:"go1.17.3", Compiler:"gc", Platform:"linux/amd64"}

六、添加集群

1、登录进rancher中，点击添加集群

2、选择自定义

3、填写集群名称

4、修改NodePort为1-65535

5、点击下一步，即可创建完成。

6、选择主机选项，Etcd，Control，Worker.复制生成的命令到master服务器上执行。

7、master服务器上执行

yang@master:~$ sudo docker run -d --privileged --restart=unless-stopped --net=host -v /etc/kubernetes:/etc/kubernetes -v /var/run:/var/run rancher/rancher-agent:v2.4.8 --server https://192.168.1.106 --token vqfrscgwp4wnwsndpplc9p5kkcvhwxlrhpx42fd8gpj64vlnz49cvm --ca-checksum a056c9a4d6fe40e2fb7d0b7aed3241ad79352e9750e8034d527a6d71cb0cf82b --etcd --controlplane --worker

Unable to find image 'rancher/rancher-agent:v2.4.8' locally

v2.4.8: Pulling from rancher/rancher-agent

f08d8e2a3ba1: Already exists

3baa9cb2483b: Already exists

94e5ff4c0b15: Already exists

1860925334f9: Already exists

e5d12d0f9a84: Pull complete

5116e686c448: Pull complete

d4f72327bfd0: Pull complete

61bcbcce7861: Pull complete

fca783017521: Pull complete

29ab00ed6801: Pull complete

Digest: sha256:c8a111e6250a313f1dd5d34696ddbef9068f70ddf4b15ab4c9cefd0ea39b76c1

Status: Downloaded newer image for rancher/rancher-agent:v2.4.8

5d0dab9b2c081057f482025d477b329c7a90464289b9209675755280842813bf

8、rancher管理界面查看状态（下载的镜像比较多，耐心等待）

9、同样的命令，将node节点也加入到集群中，如下：

七、k8s使用kubectl查看节点状态

1、建立config文件

在/home/yang/.kube的文件夹下，创建config文件

sudo mkdir -m 777 /home/yang/.kube

cd /home/yang/.kube/

sudo touch config

2、点击Rancher管理界面仪表盘右边的Kubeconfig File

3、复制里面的内容，粘贴到config文件中。

yang@master:~/.kube$ cat config

apiVersion: v1

kind: Config

clusters:

- name: "k8s-cluster"

  cluster:

    server: "https://192.168.1.106/k8s/clusters/c-rvp4f"

    certificate-authority-data: "LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSUJpRENDQ\

      VM2Z0F3SUJBZ0lCQURBS0JnZ3Foa2pPUFFRREFqQTdNUnd3R2dZRFZRUUtFeE5rZVc1aGJXbGoKY\

      kdsemRHVnVaWEl0YjNKbk1Sc3dHUVlEVlFRREV4SmtlVzVoYldsamJHbHpkR1Z1WlhJdFkyRXdIa\

      GNOTWpFeApNakV6TURJME16STJXaGNOTXpFeE1qRXhNREkwTXpJMldqQTdNUnd3R2dZRFZRUUtFe\

      E5rZVc1aGJXbGpiR2x6CmRHVnVaWEl0YjNKbk1Sc3dHUVlEVlFRREV4SmtlVzVoYldsamJHbHpkR\

      1Z1WlhJdFkyRXdXVEFUQmdjcWhrak8KUFFJQkJnZ3Foa2pPUFFNQkJ3TkNBQVExamNjUDJDRkNiY\

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      UgvQkFVd0F3RUIvekFLQmdncWhrak9QUVFEQWdOSUFEQkZBaUEwaUo2a0psSW8KeTNIS0RxN2NkT\

      UgyaEZCRmM1VUdQRk5oZVRYNVBlOU0wQUloQUkzNEZwR0xNeUoxZE5GQnYrNHhTR0kwQVlPUwpmO\

      FlGVVdJQjFBOVB3clo0Ci0tLS0tRU5EIENFUlRJRklDQVRFLS0tLS0="

- name: "k8s-cluster-node1"

  cluster:

    server: "https://192.168.1.108:6443"

    certificate-authority-data: "LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSUN3akNDQ\

      WFxZ0F3SUJBZ0lCQURBTkJna3Foa2lHOXcwQkFRc0ZBREFTTVJBd0RnWURWUVFERXdkcmRXSmwKT\

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      0VCQUxzU2UvMzFFTldECkE1YUljRkJwY0NkUGNQMGlKTWozUU94V2VPQ2pzbDhOU0pXSngrYUlhV\

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      UZNQU1CCkFmOHdEUVlKS29aSWh2Y05BUUVMQlFBRGdnRUJBQ2sxRTNQUE5JbENFc3lTRHhMbVFkZ\

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      klDQVRFLS0tLS0K"

- name: "k8s-cluster-node2"

  cluster:

    server: "https://192.168.1.109:6443"

    certificate-authority-data: "LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSUN3akNDQ\

      WFxZ0F3SUJBZ0lCQURBTkJna3Foa2lHOXcwQkFRc0ZBREFTTVJBd0RnWURWUVFERXdkcmRXSmwKT\

      FdOaE1CNFhEVEl4TVRJeE16QTBNREV6TkZvWERUTXhNVEl4TVRBME1ERXpORm93RWpFUU1BNEdBM\

      VVFQXhNSAphM1ZpWlMxallUQ0NBU0l3RFFZSktvWklodmNOQVFFQkJRQURnZ0VQQURDQ0FRb0NnZ\

      0VCQUxzU2UvMzFFTldECkE1YUljRkJwY0NkUGNQMGlKTWozUU94V2VPQ2pzbDhOU0pXSngrYUlhV\

      1pUZDRmSzIwZHhPTnBjdUFiUXEyUWUKa3NwSExLRTNlUDJqZXpyekZJZndaTFdKTUtUM0t1RkR6c\

      y8zaGhNU1NSczVwTUczYWo1bmVGajFYaTJLa2svWAo4VnVtS1FXQjlmSGRRdDVwclU4ZzBuYUZiQ\

      mw0S0dicUJ4RUNRa0ZDV0hhM1U0RXpTVkpNbnRFRG1ZbDVxeHlFClV6VHRzUUx1dEpEdFBDdzFHb\

      HB4Vndob1VtOXBYQ2pROElFYWsrU0g5c0o0a1JEOUxMSC9sMmkyWGxROUZkUksKaEZ4OUFCcUp4U\

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      EtTVmZwMU02RUNBd0VBQWFNak1DRXdEZ1lEVlIwUEFRSC9CQVFEQWdLa01BOEdBMVVkRXdFQi93U\

      UZNQU1CCkFmOHdEUVlKS29aSWh2Y05BUUVMQlFBRGdnRUJBQ2sxRTNQUE5JbENFc3lTRHhMbVFkZ\

      25WUzNRT09oakczWXoKSXRPNVlJRVcxbUlDTlNBVUxjQ1pLaHFLSjRERkVIZEUyV0p1WGhhQmtIM\

      nBQOFljQVpIVktWUHRGZGJRK29aMQpGUktDeXZHU2lQaTlQZ2VITDRCb2FHQ21wb2ZRdDFaaisyQ\

      TFXQ3MvUUV4U3FyTXE2cXF1WXp0L3BKMFJIMFdZCmRMckFxL0NDRHMrbzlOQW4xQW5VYWZtUzB0R\

      0FKb2R4SXZYM0haVVpNSUk5OWZLMDhIcWlKSVEyS0V5bnk3ZWwKUnVIR3Jlc0I4Y0lTR2pOZDg5M\

      W16OEZJTk1QeExoNDFwWURjZjNqTEZ5VS83anZpZjUrbEdiRHlZM01Mb09UOApLVld4UXhSRDVka\

      lF3MVZFZHlKVUVLK0EwMThOenBRM0JZenJDejI2THloZmZPVit3QVE9Ci0tLS0tRU5EIENFUlRJR\

      klDQVRFLS0tLS0K"

- name: "k8s-cluster-master"

  cluster:

    server: "https://192.168.1.106:6443"

    certificate-authority-data: "LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSUN3akNDQ\

      WFxZ0F3SUJBZ0lCQURBTkJna3Foa2lHOXcwQkFRc0ZBREFTTVJBd0RnWURWUVFERXdkcmRXSmwKT\

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      0VCQUxzU2UvMzFFTldECkE1YUljRkJwY0NkUGNQMGlKTWozUU94V2VPQ2pzbDhOU0pXSngrYUlhV\

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      0FKb2R4SXZYM0haVVpNSUk5OWZLMDhIcWlKSVEyS0V5bnk3ZWwKUnVIR3Jlc0I4Y0lTR2pOZDg5M\

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      lF3MVZFZHlKVUVLK0EwMThOenBRM0JZenJDejI2THloZmZPVit3QVE9Ci0tLS0tRU5EIENFUlRJR\

      klDQVRFLS0tLS0K"

users:

- name: "k8s-cluster"

  user:

    token: "kubeconfig-user-trn62.c-rvp4f:p82f2nfbxnzqllvls9rpfmtxk8dkcnjjgm8rsl5nvq978gms5twpd8"

contexts:

- name: "k8s-cluster"

  context:

    user: "k8s-cluster"

    cluster: "k8s-cluster"

- name: "k8s-cluster-node1"

  context:

    user: "k8s-cluster"

    cluster: "k8s-cluster-node1"

- name: "k8s-cluster-node2"

  context:

    user: "k8s-cluster"

    cluster: "k8s-cluster-node2"

- name: "k8s-cluster-master"

  context:

    user: "k8s-cluster"

    cluster: "k8s-cluster-master"

current-context: "k8s-cluster"

4、让kubectl能辨识到~/.kube/config

export KUBECONFIG=/home/rancher/.kube/config

5、确认kubectl有没有抓到nodes

kubectl cluster-info

6、查看node节点状态

yang@master:~$ kubectl get node

NAME     STATUS   ROLES                  　　　    AGE     VERSION

master   Ready    control-plane,etcd,worker      4d1h     v1.18.8

node1    Ready    control-plane,etcd,worker       4d      v1.18.8

node2    Ready    control-plane,etcd,worker       4d      v1.18.8

至此rancher 基于k8s集群配置完成，即可部署服务！

Rancher v2.4.8 容器管理平台-集群搭建（基于k8s）

整体概要

一、硬件需求

二、环境准备

三、安装docker

四、安装rancher

五、安装kubectl命令行工具

六、添加集群

七、k8s使用kubectl查看节点状态

Rancher v2.4.8 容器管理平台-集群搭建（基于k8s）的相关教程结束。

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