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K8S(2)——Kubernetes 安装前的准备 Ubuntu
0
kubernetes
小笨蛋
发布于：2021年09月19日
更新于：2021年09月21日
233
#custom-toc-container
> Ubuntu18.4 ### 安装 kubeadm ### 概述 kubeadm 是 kubernetes 的集群安装工具，能够快速安装 kubernetes 集群。 ### 配置软件源 安装系统工具 `apt-get update && apt-get install -y apt-transport-https` 安装 GPG 证书 `curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add -` ```shell # 写入软件源；注意：我们用系统代号为 bionic，但目前阿里云不支持，所以沿用 16.04 的 xenial cat << EOF >/etc/apt/sources.list.d/kubernetes.list deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main EOF ```  ### 安装 kubeadm，kubelet，kubectl # 安装 `apt-get update` `apt-get install -y kubelet kubeadm kubectl` ```shell # 安装过程如下，注意 kubeadm 的版本号 Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: conntrack cri-tools kubernetes-cni socat The following NEW packages will be installed: conntrack cri-tools kubeadm kubectl kubelet kubernetes-cni socat 0 upgraded, 7 newly installed, 0 to remove and 96 not upgraded. Need to get 50.6 MB of archives. After this operation, 290 MB of additional disk space will be used. Get:1 http://mirrors.aliyun.com/ubuntu bionic/main amd64 conntrack amd64 1:1.4.4+snapshot20161117-6ubuntu2 [30.6 kB] Get:2 http://mirrors.aliyun.com/ubuntu bionic/main amd64 socat amd64 1.7.3.2-2ubuntu2 [342 kB] Get:3 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 cri-tools amd64 1.12.0-00 [5,343 kB] Get:4 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 kubernetes-cni amd64 0.7.5-00 [6,473 kB] Get:5 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 kubelet amd64 1.14.1-00 [21.5 MB] Get:6 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 kubectl amd64 1.14.1-00 [8,806 kB] Get:7 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 kubeadm amd64 1.14.1-00 [8,150 kB] Fetched 50.6 MB in 5s (9,912 kB/s) Selecting previously unselected package conntrack. (Reading database ... 67205 files and directories currently installed.) Preparing to unpack .../0-conntrack_1%3a1.4.4+snapshot20161117-6ubuntu2_amd64.deb ... Unpacking conntrack (1:1.4.4+snapshot20161117-6ubuntu2) ... Selecting previously unselected package cri-tools. Preparing to unpack .../1-cri-tools_1.12.0-00_amd64.deb ... Unpacking cri-tools (1.12.0-00) ... Selecting previously unselected package kubernetes-cni. Preparing to unpack .../2-kubernetes-cni_0.7.5-00_amd64.deb ... Unpacking kubernetes-cni (0.7.5-00) ... Selecting previously unselected package socat. Preparing to unpack .../3-socat_1.7.3.2-2ubuntu2_amd64.deb ... Unpacking socat (1.7.3.2-2ubuntu2) ... Selecting previously unselected package kubelet. Preparing to unpack .../4-kubelet_1.14.1-00_amd64.deb ... Unpacking kubelet (1.14.1-00) ... Selecting previously unselected package kubectl. Preparing to unpack .../5-kubectl_1.14.1-00_amd64.deb ... Unpacking kubectl (1.14.1-00) ... Selecting previously unselected package kubeadm. Preparing to unpack .../6-kubeadm_1.14.1-00_amd64.deb ... Unpacking kubeadm (1.14.1-00) ... Setting up conntrack (1:1.4.4+snapshot20161117-6ubuntu2) ... Setting up kubernetes-cni (0.7.5-00) ... Setting up cri-tools (1.12.0-00) ... Setting up socat (1.7.3.2-2ubuntu2) ... Setting up kubelet (1.14.1-00) ... Created symlink /etc/systemd/system/multi-user.target.wants/kubelet.service → /lib/systemd/system/kubelet.service. Setting up kubectl (1.14.1-00) ... Processing triggers for man-db (2.8.3-2ubuntu0.1) ... # 注意这里的版本号，我们使用的是 kubernetes v1.14.1 Setting up kubeadm (1.14.1-00) ... ```  ```shell # 设置 kubelet 自启动，并启动 kubelet systemctl enable kubelet && systemctl start kubelet ``` - kubeadm：用于初始化 Kubernetes 集群 - kubectl：Kubernetes 的命令行工具，主要作用是部署和管理应用，查看各种资源，创建，删除和更新组件 - kubelet：主要负责启动 Pod 和容器
这里⇓感觉得写点什么，要不显得有点空，但还没想好写什么...
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