k8s-集群安装部署

忘是亡心i 2022-10-24 11:46 335阅读 0赞

# kubernetes集群安装 #

文件网盘自取：https://pan.baidu.com/s/1cMepm0ZWndeIZOJX981UTg
    	 提取码：9426

**1.安装注意：**  
虚拟机配置：每个节点内存>=2G，CPU>=2G (最低配置)  
\#关闭selinux：  
/etc/selinux/config将SELINUX=disabled 重启即可  
\#关闭firewalld  
systemctl stop firewalld  
\#关闭swap交换分区  
swapoff -a \#临时关闭

设置主机名

<table> 
 <thead> 
  <tr> 
   <th>角色</th> 
   <th>IP</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>k8s-master</td> 
   <td>192.168.26.100</td> 
  </tr> 
  <tr> 
   <td>k8s-node1</td> 
   <td>192.168.26.110</td> 
  </tr> 
  <tr> 
   <td>k8s-node2</td> 
   <td>192.168.26.120</td> 
  </tr> 
 </tbody> 
</table>

**2.在master添加hosts：**

$     cat >> /etc/hosts << EOF 192.168.26.110 k8s-matser 192.168.26.110 k8s-node1 192.168.26.120 k8s-node2 EOF

**3.将桥接 的IPv4流量传递到iptables的链：**

$    cat > /etc/sysctl.d/k8s.conf << EOF net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 EOF
    $ sysctl --system #生效

**4.时间同步：**

$  	yum -y install ntpdate
    $ 	ntpdate time.windows.com

**5.所有节点安装：docker/kubeadm/kubelet**  
**5.1 docker: 使用阿里云源**

$ wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
    $ yum -y install docker-ce-18.06.1.ce-3.el7
    $ systemctl enable docker && systemctl start docker
    
    #docker加速器：
    cat << EOF > /etc/docker/daemon.json
    { 
    "exec-opts": ["native.cgroupdriver=systemd"],
    "registry-mirrors": ["https://0bb06s1q.mirror.aliyuncs.com"],
    "log-driver": "json-file",
    "log-opts": { 
    "max-size": "100m"
    },
    "storage-driver": "overlay2",
    "storage-opts": ["overlay2.override_kernel_check=true"]
    }
    EOF
    
    $ systemctl restart docker

**5.2添加kubernetes阿里云的yum源**

$ 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

**5.3安装软件**

$ yum install -y kubelet-1.17.0 kubeadm-1.17.0 kubectl-1.17.0
    $ systemctl enable kubelet

**5.4 初始化K8s Matser (192.168.26.110执行)**

$ kubeadm init \
      --apiserver-advertise-address=192.168.26.100 \
      --image-repository registry.aliyuncs.com/google_containers \
      --kubernetes-version v1.17.0 \
      --service-cidr=10.96.0.0/12 \
      --pod-network-cidr=10.244.0.0/16

执行完之后会得到以下相关内容：  
按照提示操作：

$ cp /etc/kubernetes/admin.conf $HOME/
    $ chown $(id -u):$(id -g) $HOME/admin.conf
    $ export KUBECONFIG=$HOME/admin.conf

下面这条命令是在node节点上执行，用于加入master集群。（保存好）

$  kubeadm join 192.168.26.100:6443 --token 9k1p5x.uzisewislt6lefmk \--discovery-token-ca-cert-hash sha256:c87a988ee9f2dbc2892bd46129953c5c4eac64a2569d920573762740e3cbfb92

6.安装pod网络（CNI）matser执行-（yml文件在网盘，自取）

$ kubectl apply -f kube-flannel.yml

7 添加node节点到集群-输入刚刚初始化的命令（只在2个node节点执行噢）

$ kubeadm join 192.168.26.100:6443 --token 9k1p5x.uzisewislt6lefmk \--discovery-token-ca-cert-hash sha256:c87a988ee9f2dbc2892bd46129953c5c4eac64a2569d920573762740e3cbfb92

8 查看集群状态：kubectl get node  
![在这里插入图片描述][20210129153600151.png]  
可以看到master及另外2个node节点都已经准备好了。

[20210129153600151.png]: /images/20221024/640908e093bf49d194517bc68a212462.png